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Engine Block Hoses

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DISPLAYING 17 to 30 (of 30 products)
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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

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97010631103
97010631103
97010631102

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97010631103/1
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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

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97010631103
97010631103
97010631102

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97057258300/1
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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.



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Related, superseded, cross reference or alternative numbers for comparison.

97057258300
97057258300

The product you are viewing cross references to these numbers
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

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97057258300
97057258300

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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

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97010641102
97010641101
97010641102

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99970182541
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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.



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Related, superseded, cross reference or alternative numbers for comparison.

99970182541
99970182541
99970182540

The product you are viewing cross references to these numbers
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
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

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97010631201
97010631201

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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
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97010631201
97010631201

The product you are viewing cross references to these numbers
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

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97010640102
97010640102

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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

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94810645722
94810645722

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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.



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

94810645722
94810645722

The product you are viewing cross references to these numbers
Special Order item
97010645002
Product Information
Product Information
Water hose.

porsche

Fits:
Porsche 970 Panamera 3.6L 2010-16
Porsche 970 Panamera S 4.8L 2010-16
Porsche 970 Turbo / GTS 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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

97010645002
97010645002

The product you are viewing cross references to these numbers
Special Offer
97010645002/1
Product Information
Product Information
Water hose.

oematch

Fits:
Porsche 970 Panamera 3.6L 2010-16
Porsche 970 Panamera S 4.8L 2010-16
Porsche 970 Turbo / GTS 4.8L 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 24

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97010645002
97010645002

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DISPLAYING 17 to 30 (of 30 products)
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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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