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Design 911 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://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

Belts / Tensioners / Rollers

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DISPLAYING 1 to 11 (of 11 products)
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90019202750
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Product Information
Air con belt.

porsche

Fits:
Porsche 911 1969-73
Porsche 911SC 1974-83
Porsche 911 Turbo 1975-77

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90019202750
90019202750
90019201350

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90019202750/1
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Product Information
Air con belt. Width: 13,0 mm, Length: 1110,0 mm.

dayco

Fits:
Porsche 911 1969-73
Porsche 911SC 1974-83
Porsche 911 Turbo 1975-77

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90019202750
90019202750
13A1110C
90019201350

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90019200550
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Air Pump Belt - 9.5 x 975.

porsche

Fits:
Porsche 911 3.2L 1978-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 35.

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90019200550
90019200550
520100975

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90019200550/1
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Product Information
Air pump belt - 9.5 x 975.

oematch

Fits:
Porsche 911 3.2L 1978-89

Click 'Zoom in' for large parts diagram.
Diagram Ref No 35.

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90019200550
90019200550
520100975

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Special Order item
9991921765A
Product Information
Product Information
Alternator Belt, Narrow V-belt.
Belt size: 10 x 710

porsche

Fits:
Porsche 911 1965-73
Porsche 911 Turbo 1976 >>
Porsche 911 SC 1974-79 (Check Size of your Belt)
Porsche 911 SC 1980-83
Porsche 911 3.2L 1984-89
Porsche 914 1970-76

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9991921765A
99919217650
9991921765A

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9991921765A/1
Product Information
Product Information
Alternator belt, Narrow V-belt.
Belt size: 10 x 713 mm

oematch

Fits:
Porsche 911 1965-73
Porsche 911 Turbo 1976 >>
Porsche 911 SC 1974-79 (Check Size of your Belt)
Porsche 911 SC 1980-83
Porsche 911 3.2L 1984-89
Porsche 914 1970-76

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9991921765A
99919217650
9991921765A
520100715

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99919209750
Product Information
Product Information
Alternator belt. Belt size: 9.5 x 725.

porsche

Fits:
Porsche 911 Turbo/SC 1974-79 (Please choose by size)

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99919209750
99919209750

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99919209750/1
Product Information
Product Information
Alternator belt.
Width: 10 mm, Length: 725 mm

dayco

Fits:
Porsche 911 Turbo/SC 1974-79 (Please choose by size)

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99919209750
99919209750
052 010 0725

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9991923135A
Product Information
Product Information
Alternator Belt. Narrow V-Belt 9.5 x 695.

porsche

Belt size: 9.5 x 695

Fits:
Porsche 911 SC 1980-83
Porsche 911 1984-89

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9991923135A
9991923135A

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90007437201
Product Information
Product Information
Hexagon head bolt M10 x 45 - Various applications

Sold each

Fits:
Porsche 356B / 356C - 1960 to 1965
Porsche 911 - 1978 to 1989
Porsche 924S - 1986 to 1988
Porsche 944 - 1985 to 1991
Porsche 968 - 1992 to 1995
Porsche 928 - 1978 to 1995 



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90007437201
90007437201

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9301065640Y
Product Information
Product Information
Shim Washer for Alternator Belt Pulley (0.5 mm). EACH.

porsche

Fits:
Porsche 911 1975-89
Porsche 911 (930) Turbo 1975-78

Click 'Zoom in' for large parts diagram.
Diagram ref no 7



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9301065640Y
93010656400
9301065640Y

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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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