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Porsche > Panamera 970 MK1 (2009-2013) > 970.1 Panamera GTS V8 4.8L 2011-13 > Engine Cooling > Coolant Hoses and Pipes >

Engine Block Hoses

Engine Block Hoses

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DISPLAYING 17 to 32 (of 34 products)
1 2 3
Engine Coolant Hose, Supply. Porsche 970 Panamera 2010-16 - 97010642500
2
Engine Coolant Hose, Supply. Porsche 970 Panamera 2010-16
97010642500/1
Product Information
Product Information
Engine Coolant Hose, Supply.

The Engine Coolant Hose, Supply is a OE MATCH coolant hose designed to supply pressurised engine coolant through the cooling and heating circuit. This hose helps maintain correct coolant circulation between key cooling components, supporting stable engine operating temperatures and reliable heater performance. It provides precise fitment, durability, and long-term resistance to heat and pressure for Porsche Panamera (970) models.

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 31 (Diagram Ref No 17 Included, Diagram Ref No 25 Sold Separately)

What This Product Does:
  • Supplies engine coolant from the engine/water pump area to other cooling components such as the radiator or heater circuit.
  • Helps maintain proper coolant circulation and pressure, which is essential for stable engine temperature control.
  • Supports cabin heating, as hot coolant routed through this hose can be directed to the heater core.
  • Provides a flexible connection that absorbs engine movement, vibration, and thermal expansion without stressing rigid pipes.

Symptoms Of Wear Or Failure:
  • Coolant may leak from the hose itself or around the hose clamp connections, often leaving visible residue or wet patches.A leaking supply hose can cause gradual coolant loss, requiring frequent top-ups.
  • Loss of coolant or restricted flow can lead to rising or fluctuating engine temperatures.
  • A noticeable sweet smell around the engine bay or inside the cabin often indicates a coolant leak.
  • Common signs include cracking or splitting, bulging or swelling, hardened or brittle rubber, coolant staining on the hose surface.
  • If coolant flow to the heater circuit is compromised, cabin heat may be reduced.
  • Modern Porsche models may display low coolant or overheating warnings when hose failure begins.

Why Replacement Matters:
  • Prevents coolant leaks that cause low coolant levels and loss of system pressure.
  • Helps avoid engine overheating, which can lead to severe and expensive engine damage.
  • Restores proper coolant circulation, ensuring the cooling system works efficiently under all driving conditions.
  • Maintains reliable cabin heating, since the heater core depends on steady coolant flow.
  • Protects surrounding components, as leaking coolant can damage sensors, hoses, wiring, and nearby engine parts.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010642500
97010642500

The product you are viewing cross references to these numbers
Engine coolant overflow hose. Porsche 970 Panamera - 97010631103, 97010631102
2
Engine coolant overflow hose. Porsche 970 Panamera
Special Order item
97010631103
Product Information
Product Information
Engine coolant overflow hose.

Fits:
Porsche 970 Panamera 4.8L 2009-16
Porsche 970 Panamera S 3.6L 2010-16

Diagram ref no 18

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010631103
97010631103
97010631102

The product you are viewing cross references to these numbers
Engine coolant overflow hose. Porsche 970 Panamera - 97010631103, 97010631102
3
Engine coolant overflow hose. Porsche 970 Panamera
Special Offer
97010631103/1
Product Information
Product Information
Engine coolant overflow hose.

Fits:
Porsche 970 Panamera 4.8L 2009-16
Porsche 970 Panamera S 3.6L 2010-16

Diagram ref no 18

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010631103
97010631103
97010631102

The product you are viewing cross references to these numbers
Heater Hose Supply On Water Pump. Porsche 970 Panamera 2010-16 - 97057258300
2
Heater Hose Supply On Water Pump. Porsche 970 Panamera 2010-16
97057258300/1
Product Information
Product Information
Heater Hose Supply On Water Pump.

The Heater Hose Supply on Water Pump is a OE MATCH heater hose designed to supply hot engine coolant from the water pump to the heater circuit. This hose plays a key role in the vehicle’s heating system by delivering warmed coolant to the heater core, enabling effective cabin heating. It offers precise fitment, high resistance to heat and pressure, and long-term reliability for Porsche Panamera (970) models.

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
  • Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
  • Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 5

What This Product Does:
  • Supplies hot engine coolant from the water pump outlet to the heater core circuit.
  • Enables cabin heating, as the heater core relies on hot coolant to warm the air blown into the interior.
  • Helps maintain proper coolant circulation between the engine cooling system and the HVAC system.
  • Provides a flexible connection that absorbs engine movement, vibration, and thermal expansion.

Symptoms Of Wear Or Failure:
  • Coolant may seep or drip from the hose itself or at the connection points, often leaving pink/white residue.
  • A failing heater supply hose can cause gradual coolant loss, requiring frequent top-ups.
  • If hot coolant isn’t reaching the heater core, the heater may blow lukewarm or cold air, even when the engine is warm.
  • A noticeable sweet smell in the engine bay or inside the cabin often indicates a coolant leak in the heater circuit.
  • Common signs include cracking or splitting, bulging or swelling, hardened or brittle rubber, wet staining around the hose.
  • Coolant loss from the heater supply hose can contribute to overheating or unstable engine temperatures.
  • Modern Porsche models may display low-coolant or temperature warnings when the hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and loss of system pressure.
  • Maintains proper cabin heating, since the heater core depends on a steady supply of hot coolant.
  • Helps avoid engine overheating, as coolant loss from the heater circuit affects overall cooling performance.
  • Restores reliable coolant circulation between the water pump and heater system.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, wiring, and nearby engine parts.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97057258300
97057258300

The product you are viewing cross references to these numbers
Heater hose Supply. On water pump. Porsche 970 Panamera - 97057258300
3
Heater hose Supply. On water pump. Porsche 970 Panamera
Special Order item
97057258300
Product Information
Product Information
Heater hose Supply. On water pump.

porsche

Fits:
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 5

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97057258300
97057258300

The product you are viewing cross references to these numbers
Heating tube, Supply. Porsche 970 Panamera - 97010641101, 97010641102
2
Heating tube, Supply. Porsche 970 Panamera
Special Order item
97010641102
Product Information
Product Information
Heating tube, Supply.

porsche

Fits:
Porsche 970 Panamera / S / Turbo / GTS 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 30

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010641102
97010641101
97010641102

The product you are viewing cross references to these numbers
O-Ring, 19.6 X 3.53N. Porsche 957 / 958 Cayenne / 970 Panamera 2007-18 - 99970182541, 99970182540
2
O-Ring, 19.6 X 3.53N. Porsche 957 / 958 Cayenne / 970 Panamera 2007-18
Special Order item
99970182541
Product Information
Product Information

O-Ring, 19.6 X 3.53N.
The O-Ring 19.6 x 3.53N is a genuine Porsche OEM sealing ring designed to create a tight, leak-free seal between coolant pipe connections and related engine cooling system components. Manufactured to precise dimensions, this O-ring fits into the mating groove of the pipe joint to prevent coolant loss and maintain correct system pressure. It is an essential replacement seal used on various Porsche coolant and inlet pipe applications.

Fits:

  • Porsche 957 Cayenne S/GTS 4.8L 2007-10
  • Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
  • Porsche 958 Cayenne S V8 4.8L Petrol 400HP 2010-17
  • Porsche 958 Cayenne GTS V8 4.8L Petrol 400HP 2010-17
  • Porsche 958 Cayenne Turbo V8 4.8L Petrol 500HP 2010-17
  • Porsche 958 Cayenne Turbo S V8 4.8L Petrol 550HP 2010-17
  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16 

Diagram Ref No 2

What This Product Does:

  • Seals coolant pipe joints to prevent coolant leaks between connected pipes and fittings.
  • Maintains correct cooling system pressure, which is essential for efficient engine temperature control.
  • Creates a tight seal between metal components by compressing inside a groove when the pipe connection is tightened.

Symptoms Of Wear Or Failure:

  • Coolant may seep or drip from the joint where the O-ring seals the connection.
  • A worn O-ring can cause slow coolant loss, leading to frequent topping up.
  • Loss of coolant or system pressure can reduce cooling efficiency and contribute to overheating.
  • A leaking O-ring often produces a noticeable coolant smell near the engine bay.
  • The O-ring may show cracking, flattening (loss of shape), swelling, hardening or brittleness
  • Modern Porsche models may trigger low coolant warnings if leakage occurs.

Why Replacement Matters:

  • Prevents coolant leaks at pipe connections, avoiding coolant loss and contamination.
  • Maintains correct system pressure, which is essential for efficient engine cooling performance.
  • Helps prevent engine overheating, since even a small leak can lead to low coolant levels and temperature rise.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, connectors, and nearby engine parts.
  • Ensures reliable long-term sealing, since old O-rings harden and flatten over time due to heat and pressure cycles.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99970182541
99970182541
99970182540

The product you are viewing cross references to these numbers
Vent Hose. Porsche 970 Panamera 3.6L / 4.8L 2010-16 - 97010642202
2
Vent Hose. Porsche 970 Panamera 3.6L / 4.8L 2010-16
Special Order item
97010642202
Product Information
Product Information
Vent Hose.

The Vent Hose is a genuine Porsche OEM coolant vent/overflow hose designed to route coolant vapours and excess pressure within the engine cooling system. This hose helps maintain proper cooling system balance by directing overflow coolant and vented pressure to the coolant reservoir, supporting stable engine temperatures and reliable cooling performance. Manufactured to Porsche specifications, it provides precise fitment, durability, and long-term resistance to heat and coolant exposure for Porsche Panamera (970) models.

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 19 (Diagram Ref No 20 Included)

What This Product Does:

  • Vents excess pressure from the cooling system during temperature changes.
  • Routes coolant vapours or overflow safely to the coolant expansion/reservoir tank.
  • Helps maintain correct system pressure, which is essential for stable engine cooling.
  • Prevents coolant from escaping into the engine bay, helping keep the cooling system sealed and efficient.

Symptoms Of Wear Or Failure:
  • Coolant may seep from cracks or connection points, leaving dried residue around the hose or nearby components.
  • A leaking vent hose can cause gradual coolant loss, leading to frequent top-ups.
  • If the vent hose cannot manage pressure correctly, the cooling system may not regulate pressure as designed.
  • A noticeable coolant smell in the engine bay or near the rear of the vehicle often indicates a leak.
  • Common signs include cracking or splitting, brittle or hardened rubber, loose or deformed hose ends, wet staining or discoloration.
  • Low coolant or pressure-related issues may trigger warning messages on the dashboard.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and cooling system pressure loss.
  • Maintains correct cooling system venting, allowing pressure to stabilise during heat expansion and cooling cycles.
  • Helps avoid overheating, since coolant loss or pressure imbalance can reduce cooling efficiency.
  • Protects surrounding components, as leaking coolant can damage hoses, wiring, sensors, and engine bay parts.
  • Restores reliable cooling system operation, ensuring overflow coolant is routed correctly back to the reservoir.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010642202
97010642202

The product you are viewing cross references to these numbers
Vent Hose. Porsche 970 Panamera 3.6L / 4.8L 2010-16 - 97010642202
2
Vent Hose. Porsche 970 Panamera 3.6L / 4.8L 2010-16
97010642202/1
Product Information
Product Information
Vent Hose.

The Vent Hose is a OE MATCH coolant vent/overflow hose designed to route coolant vapours and excess pressure within the engine cooling system. This hose helps maintain proper cooling system balance by directing overflow coolant and vented pressure to the coolant reservoir, supporting stable engine temperatures and reliable cooling performance. It provides precise fitment, durability, and long-term resistance to heat and coolant exposure for Porsche Panamera (970) models.

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 19 (Diagram Ref No 20 Sold Separately)

What This Product Does:

  • Vents excess pressure from the cooling system during temperature changes.
  • Routes coolant vapours or overflow safely to the coolant expansion/reservoir tank.
  • Helps maintain correct system pressure, which is essential for stable engine cooling.
  • Prevents coolant from escaping into the engine bay, helping keep the cooling system sealed and efficient.

Symptoms Of Wear Or Failure:
  • Coolant may seep from cracks or connection points, leaving dried residue around the hose or nearby components.
  • A leaking vent hose can cause gradual coolant loss, leading to frequent top-ups.
  • If the vent hose cannot manage pressure correctly, the cooling system may not regulate pressure as designed.
  • A noticeable coolant smell in the engine bay or near the rear of the vehicle often indicates a leak.
  • Common signs include cracking or splitting, brittle or hardened rubber, loose or deformed hose ends, wet staining or discoloration.
  • Low coolant or pressure-related issues may trigger warning messages on the dashboard.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and cooling system pressure loss.
  • Maintains correct cooling system venting, allowing pressure to stabilise during heat expansion and cooling cycles.
  • Helps avoid overheating, since coolant loss or pressure imbalance can reduce cooling efficiency.
  • Protects surrounding components, as leaking coolant can damage hoses, wiring, sensors, and engine bay parts.
  • Restores reliable cooling system operation, ensuring overflow coolant is routed correctly back to the reservoir.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010642202
97010642202

The product you are viewing cross references to these numbers
Vent line. Porsche 970 Panamera - 97010631201
5
Vent line. Porsche 970 Panamera
Special Order item
97010631201
Product Information
Product Information
Vent line.

porsche

Fits:
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010631201
97010631201

The product you are viewing cross references to these numbers
Vent line. Porsche 970 Panamera - 97010631201 - 89692
3
Vent line. Porsche 970 Panamera
Special Offer
97010631201/1
Product Information
Product Information
Vent line.

oematch

Fits:
Porsche 970 Panamera - 2010 to 2016

Click 'Zoom in' for large parts diagram.
Diagram ref no 13

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010631201
97010631201

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 958 Cayenne / Panamera 970 - 94810605124, 94810605121, 94810605123
2
Water coolant hose return. Porsche 958 Cayenne / Panamera 970
Special Order item
94810605124
Product Information
Product Information
Water coolant hose - return.
This genuine OE hose routes coolant back to the engine’s cooling circuit, completing circulation from the engine back towards the overflow reservoir or cooling return path. It helps maintain correct engine temperature regulation by ensuring that coolant flows efficiently through the system, preventing overheating and supporting consistent thermal control under a wide range of driving conditions.

Fits:
Porsche 958 Cayenne S / GTS - 2010 to 2017
Porsche 970.1 Panamera 4 / 4S / GTS - 2009 to 2013
Porsche 970.2 Panamera GTS - 2014 to 2016

Diagram ref no 15

The Porsche Genuine OE Coolant Return Hose (Part No. 94810605124) is an original equipment engine cooling system hose assembly designed and manufactured to Porsche’s exact factory specifications. It’s a dedicated coolant return line (also referred to as a water return hose or coolant pipe) used in the closed-loop cooling system of specific Porsche V8 petrol engines.

This part has superseded the former numbers 94810605121, 94810605122, and 94810605123.

Coolant hoses endure thermal cycling, pressure variations, and exposure to antifreeze, which can lead to material degradation, swelling, cracks, and leaks over time. A failing coolant return hose can result in coolant loss, overheating, and potential engine damage. Replacing worn or deteriorated hoses with Genuine Porsche OE parts ensures correct dimensions, material resilience, and leak-free performance that aligns with factory cooling system specifications

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94810605124
94810605124
94810605121
94810605123

The product you are viewing cross references to these numbers
Water coolant hose return. Porsche 958 Cayenne / Panamera 970 - 94810605124, 94810605121, 94810605123
3
Water coolant hose return. Porsche 958 Cayenne / Panamera 970
Special Offer
94810605124/1
Product Information
Product Information
Water coolant hose - return
OE Match replacement coolant line designed to replicate the original Porsche hose in shape, length, material, and fitment. It serves as a return path for coolant within the engine cooling system, helping maintain proper circulation and temperature regulation.

Fits:
Porsche 958 Cayenne S / GTS - 2010 to 2017
Porsche 970.1 Panamera 4 / 4S / GTS - 2009 to 2013
Porsche 970.2 Panamera GTS - 2014 to 2016

Diagram ref no 15

The return hose carries coolant back toward the radiator or engine block after it has passed through the engine and other cooling components. Proper coolant flow is vital for maintaining stable engine temperatures, preventing overheating, and ensuring long-term engine longevity. A worn, cracked, or leaking hose can compromise coolant flow, lead to coolant loss, introduce air into the system, and result in overheating or engine damage.

This OE Match hose fits directly in place of the original and is supplied without additional clamps or fittings, allowing reuse of existing hardware or replacement with recommended clamps as needed. It’s ideal for coolant system maintenance, restoration work, or replacing age-affected components.

The coolant return hose completes the coolant circulation loop by transporting coolant back to the radiator/engine assembly after passage through the engine or heat exchangers. This return path helps maintain stable coolant temperatures and supports continuous heat dissipation.

Function:
• Provides a return path for coolant in the engine cooling system
•  Maintains proper coolant circulation and temperature control
•  Resists heat, pressure, and coolant breakdown
•  Design for direct fit and correct routing
•  Durable construction for long-term service

Coolant hoses deteriorate over time due to heat cycling, pressure, and exposure to coolant and engine bay contaminants. Cracks, bulges, or soft spots can develop, leading to coolant leaks, engine overheating, air ingress, and reduced cooling performance. Replacing aging hoses with an OE Match coolant return hose restores proper fluid flow, maintains engine operating temperature, and helps protect against costly engine damage.

When to replace:
•  Visible cracks, swelling, or soft spots
•  Coolant leaks or crusty coolant residue
•  Engine overheating or temperature fluctuations
•  During major coolant service (water pump, thermostat, belt service)
•  Routine preventative maintenance for older hoses

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94810605124
94810605124
94810605121
94810605123

The product you are viewing cross references to these numbers
Water coolant hose, return. Porsche 970 Panamera S / GTS / Turbo 4.8L - 97010640102
4
Water coolant hose, return. Porsche 970 Panamera S / GTS / Turbo 4.8L
Special Order item
97010640102
Product Information
Product Information
Water coolant hose, return.

porsche

Fits:
Porsche 970 Panamera S / GTS / Turbo 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 34

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

97010640102
97010640102

The product you are viewing cross references to these numbers
Water coolant hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L - 94810645722
3
Water coolant hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L
Special Order item
94810645722
Product Information
Product Information
Water coolant hose.

porsche

Fits:
Porsche 958 Cayenne 4.8L 2011-18
Porsche 970 Panamera 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94810645722
94810645722

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Water Coolant Hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L 2010-18 - 94810645722
2
Water Coolant Hose. Porsche 958 Cayenne 4.8L / 970 Panamera 4.8L 2010-18
94810645722/1
Product Information
Product Information
Water Coolant Hose.

The Water Coolant Hose is a OE MATCH engine coolant hose designed to carry pressurised coolant through the vehicle’s cooling system. This flexible hose helps maintain correct coolant circulation between key cooling components, supporting stable engine operating temperatures and reliable heater performance. It provides precise fitment and durability for Porsche 958 Cayenne and 970 Panamera 4.8L.

Fits:

  • Porsche 958 Cayenne S V8 4.8L Petrol 400HP 2010-17
  • Porsche 958 Cayenne GTS V8 4.8L Petrol 400HP 2010-17
  • Porsche 958 Cayenne Turbo V8 4.8L Petrol 500HP 2010-17
  • Porsche 958 Cayenne Turbo S V8 4.8L Petrol 550HP 2010-17
  • Porsche 970.1 Panamera S V8 4.8L 2009-13
  • Porsche 970.1 Panamera 4S V8 4.8L 2009-13
  • Porsche 970.1 Panamera GTS V8 4.8L 2011-13
  • Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
  • Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
  • Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
  • Porsche 970.2 Panamera Turbo V8 Executive 2014-16
  • Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16

Diagram Ref No 4 (Diagram Ref No 5 And 6 Sold Separately)

What This Product Does:
  • Transports engine coolant through the cooling circuit so heat can be carried away from the engine.
  • Helps maintain correct engine operating temperature by ensuring continuous coolant circulation.
  • Supports cabin heating, since hot coolant flowing through the heater circuit is what allows the heater core to produce warm air.
  • Provides a flexible connection that absorbs engine movement and thermal expansion without stressing rigid pipes or fittings.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the hose body or around the clamp connection points.
  • A leaking hose often causes gradual coolant loss, leading to frequent top-ups.
  • Loss of coolant or restricted flow can cause overheating or unstable engine temperatures.
  • A coolant leak typically produces a sweet smell around the engine bay or under the vehicle.
  • Signs include cracking, swelling/bulging, soft spots, hardened rubber, wet staining or coolant residue.
  • If coolant flow is compromised, the heater core may not receive enough hot coolant.
  • Modern Porsche models may display low coolant or overheating warnings when a hose begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can quickly lead to low coolant levels and loss of system pressure.
  • Helps avoid engine overheating, which can cause severe and costly engine damage if ignored.
  • Restores proper coolant circulation, ensuring the cooling system works efficiently under all driving conditions.
  • Maintains reliable cabin heating, since heater performance depends on steady coolant flow.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, electrical connectors, and nearby engine parts.



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About Engine Block Hoses

Engine Block Coolant Hoses – Front Engine Porsche Models | Reliable Cooling for Peak Performance

Engine block coolant hoses are critical to maintaining stable engine temperatures and preventing overheating in your Porsche’s front-engine cooling system. These hoses circulate coolant between the engine block, radiator, and heater core, ensuring consistent temperature regulation and efficient heat dissipation — essential for performance, reliability, and longevity.

At Design911, we supply a complete selection of genuine and manufacturer-quality engine block coolant hoses for front-engine Porsche models, including the transaxle models, Cayenne, Panamera, and Macan. Each hose is precisely engineered for a perfect fit and superior heat resistance, offering the same durability, flexibility, and performance as factory-installed components.

What Do Engine Block Coolant Hoses Do?

Coolant hoses in the engine block are responsible for transferring coolant throughout the engine’s cooling circuit. Their main functions include:

  • Carrying coolant between the radiator, water pump, and engine block.
  • Regulating engine temperature for efficient performance.
  • Maintaining system pressure within the cooling system.
  • Preventing heat build-up that can lead to overheating or gasket failure.

Properly functioning coolant hoses are essential for ensuring your Porsche’s front-mounted engine operates within optimal temperature ranges — especially during heavy use or long drives.

Why Do Engine Block Coolant Hoses Fail?

Due to constant exposure to heat, pressure, and coolant chemicals, these hoses naturally degrade over time. Common causes of failure include:

  • Heat damage from prolonged exposure to high engine temperatures.
  • Rubber deterioration or cracking from age and coolant corrosion.
  • Leaks at joints or clamps due to pressure fluctuations.
  • Swelling or soft spots from internal chemical breakdown.
  • Mechanical abrasion from contact with nearby components.

Symptoms of failing hoses include visible coolant leaks, overheating, low coolant levels, or a strong coolant smell from the engine bay.

Why Replace Faulty Engine Block Coolant Hoses?

A leaking or weakened hose can cause serious cooling system failures, including overheating and engine damage. Replacing old or brittle hoses ensures reliable coolant circulation and safeguards your Porsche’s engine performance.

Benefits of replacement include:

  • Restored cooling efficiency and pressure control.
  • Prevention of leaks and overheating.
  • Improved long-term reliability and system safety.
  • Manufacturer-quality materials for perfect fit and heat resistance.

All replacement hoses in this range are constructed using reinforced, high-grade rubber compounds that meet or exceed factory standards, ensuring durability and dependability in all driving conditions.

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