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Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net Facebook Instagram

Belts / Tensioners / Rollers

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DISPLAYING 1 to 11 (of 11 products)
Special Order item
99919213150
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Air con belt aux.



Fits:
Porsche 964 Turbo (965) 1991-93

Click 'Zoom in' for large parts diagram.
Diagram Ref No 40.

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99919213150
99919213150

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99919213150/1
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Product Information
Air con belt aux.
Width:16 mm | Length: 667 mm
Teeth Quant.: 70



Fits:
Porsche 964 Turbo (965) 1991-93

Click 'Zoom in' for large parts diagram.
Diagram ref no 40.

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99919213150
99919213150
5095

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Special Order item
99919236550
Product Information
Product Information
Air con belt.



Fits:
Porsche 964 Turbo (965) 1991-93

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99919236550
99919236550
99919235650

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99919236550/1
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Product Information
Air con belt.



Fits:
Porsche 964 Turbo (965) 1991-93

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99919236550
6PK1555
99919236550
99919235650

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93012621601/1
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Product Information
Air conditioning belt tensioner. Porsche 964 Turbo 3.3L / 3.6L



Fits:
Porsche 964 Turbo 3.3L 1991-92
Porsche 964 Turbo 3.6L 1992-93

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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93012621601
93012621600
93012621601

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99919234550
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Alternator Belt.
Belt size 9.5 x 785



ALTERNATOR Belt
Porsche 964 (965) Turbo 3.2L 1991-92
Porsche 964 (965) Turbo 3.6L 1993-94

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Diagram Ref No 13A.

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99919234550
99919234550

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99919234550/2
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Alternator Belt

OE Match replacement alternator belt for Porsche 964 turbo models, manufactured in the correct 9.5 x 785mm size.

Fits:

  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 13A

The alternator belt is an important service component, transferring engine rotation to the alternator and helping maintain the vehicle's electrical charging system. A worn, cracked or incorrectly tensioned belt can slip or fail, resulting in reduced alternator performance and potentially leaving the vehicle without adequate battery charging.

What Does the Alternator Belt Do?

The alternator belt mechanically drives the alternator from the engine. As the engine runs, the belt transfers rotation to the alternator pulley, allowing the alternator to generate electricity and maintain battery charge.

Correct belt condition and tension are therefore essential for reliable operation of the charging system.

Why Do Alternator Belts Fail?

Drive belts are exposed to continuous movement, heat and changing engine speeds. The rubber material gradually deteriorates with age even on vehicles covering relatively low mileage.

Common causes of failure include:

Age-related rubber deterioration Cracking or splitting Incorrect belt tension Pulley misalignment Oil contamination Excessive heat Worn or damaged pulleys Long periods of vehicle storage

When Should It Be Replaced?

The alternator belt should be replaced if inspection reveals cracking, fraying, glazing, hardening or other deterioration.

Other warning signs can include:

Squealing or slipping noises Charging system problems Visible belt damage Difficulty maintaining correct belt tension Excessive belt movement

On classic Porsche models, periodic visual inspection is advisable regardless of mileage because deterioration can occur simply through age.

Checks During Replacement

When fitting a new alternator belt, also inspect:

Alternator pulley Crankshaft pulley Belt running surfaces Belt alignment Correct belt tension Associated mounting hardware Signs of oil contamination

Correct tension is important: an excessively loose belt can slip, while excessive tension can place unnecessary load on bearings and associated components.



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99919234550
99919234550

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Special Order item
93012621601
Product Information
Product Information
Belt tensioner.



Fits:
Porsche 964 Turbo 3.3L 1991-92
Porsche 964 Turbo 3.6L 1992-93

Click 'Zoom in' for large parts diagram.
Diagram ref no 27

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93012621601
93012621600
93012621601

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96414718703
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Product Information
Power steering belt.



Fits:
Porsche 964 1990-94

Click picture for large parts diagram.
Diagram Ref No 17.

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96414718703
96414718703
96414718702

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96414718703/1
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Product Information
Power steering belt.



Fits:
Porsche 964 1990-94

Click 'Zoom in' for large parts diagram.
Diagram Ref No 17.

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96414718703
96414718703
96414718702
94648

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96414718703/3
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Power steering belt
This OE Match power steering belt is a replacement engine drive belt for Porsche 964 models from 1990 to 1994. It is designed to match the original-style fitment and function. This replacement drive belt helps power the power steering pump, supporting smooth steering assistance and reliable steering system operation.

Fits:
Porsche 964 1990 - 1994

Diagram Ref No 17

The power steering belt transfers rotational drive from the engine pulley system to the power steering pump. This allows the pump to generate hydraulic pressure for steering assistance, helping provide lighter and more controlled steering input during driving and manoeuvring.

Functions
•  Replaces the power steering drive belt
•  Drives the power steering pump
•  Supports correct hydraulic steering assistance
•  Helps maintain smooth and consistent steering feel
•  Replaces cracked, glazed, stretched, frayed, noisy, or slipping belts
•  Suitable for routine servicing and preventative maintenance
•  OE Match replacement for Porsche 964 steering system service.

Why Replace This Part?
Power steering belts wear over time due to heat, vibration, pulley contact, age, and tension changes. A worn belt can crack, glaze, stretch, fray, squeal, slip, or fail completely. If the belt slips or breaks, the power steering pump may not operate correctly, which can result in heavy steering, warning symptoms, noise, or reduced steering assistance. Replacing the belt helps restore dependable power steering operation.

When to Replace This Part
•   The power steering belt is cracked, glazed, frayed, loose, or worn
•   Belt squeal or chirping is heard during steering or start-up
•   Steering assistance feels heavy or inconsistent
•   The power steering pump, pulleys, or tensioning components are being serviced
•   The belt is slipping or not tracking correctly
•   Preventative belt replacement is being carried out during scheduled maintenance
•   The vehicle is undergoing Porsche 964 engine bay or steering system service.

Where it fits on the car
This belt fits within the power steering pump drive system on Porsche 964 models from 1990 to 1994. It runs around the relevant pulleys according to the factory belt routing.

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96414718703
96414718703
96414718702

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DISPLAYING 1 to 11 (of 11 products)
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About Belts / Tensioners / Rollers

Engine Rebuild Belts, Tensioners & Rollers – Precision Timing for Reliable Porsche Performance

Engine rebuild belts, tensioners, and rollers are essential components in maintaining your Porsche’s precise engine timing and smooth operation. These parts work together to synchronise the camshaft and crankshaft, ensuring valves open and close at exactly the right time for optimal combustion. Over time, these components can wear or deteriorate, especially under high performance or extended use, making replacement vital during an engine rebuild or major service.

At Design911, we supply a full range of genuine and high-quality belts, tensioners, and rollers for various Porsche models including, 911, Boxster, Cayman, Cayenne, Macan, and Panamera models. Each component is designed for strength, accuracy, and long-lasting reliability — ensuring your rebuilt Porsche engine performs flawlessly mile after mile.

What Do Engine Belts, Tensioners & Rollers Do?

These components form the heart of the engine’s timing and auxiliary systems. They:

  • Drive key engine components, including the camshaft, alternator, and water pump.
  • Maintain accurate timing for optimal combustion and efficiency.
  • Reduce friction and noise through smooth roller and tensioner operation.
  • Ensure consistent belt tension to prevent slippage or premature wear.

Together, they guarantee your Porsche’s engine runs smoothly, efficiently, and reliably — whether cruising or driving at peak performance.

Why Do Belts, Tensioners & Rollers Fail?

Exposure to high temperatures, vibration, and constant motion causes natural wear over time. Common causes of failure include:

  • Aging rubber belts becoming brittle or cracked.
  • Worn bearings in rollers or tensioners leading to noise or vibration.
  • Loss of tension causing belt slippage or timing misalignment.
  • Contamination from oil or coolant degrading materials.
  • Extended maintenance intervals leading to unexpected failure.

Symptoms of failing components include squealing noises, poor engine performance, rough idle, or even timing belt failure, which can cause severe engine damage if ignored.

Why Replace Belts, Tensioners & Rollers During an Engine Rebuild?

Replacing these components during an engine rebuild ensures long-term reliability and eliminates the risk of future timing-related failures. A fresh set of belts, rollers, and tensioners restores precision, efficiency, and performance — protecting your investment.

Benefits of replacement include:

  • Restored precise timing and smooth operation.
  • Reduced risk of catastrophic engine failure.
  • Enhanced reliability and longevity of the rebuild.
  • Quieter, more efficient engine performance.

All components available from Design911 are made using premium-grade materials, precision bearings, and advanced heat-resistant compounds, ensuring maximum durability and performance in high-stress Porsche engines.

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