Belts / Tensioners / Rollers


Fits:
Porsche 911 Turbo 1978-83
Porsche 928 1978-89 *
*Cars upto 1989
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919230550
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92

Fits:
Porsche 911 Turbo 1978-83
Porsche 928 1978-89 *
*Cars upto 1989
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919230550
The product you are viewing cross references to these numbers
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92


Fits:
Porsche 928 1990-95
Car with option:
M637 Club Sport CS
M573 Air Conditioner
M639 Version GT
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919233550
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95


Fits:
Porsche 928 S4 / GT / GTS 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919230650
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Width: 13,0 mm, Length: 950,0 mm.

Fits:
Porsche 928 S4 / GT / GTS 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 11
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919230650
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95


Fits:
Porsche 928 1978-81
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919213550
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
Width: 10 mm | Length: 875 mm.

Fits:
Porsche 928 1978-81
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919213550
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82


Fits:
Porsche 928 1982-83
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919221451
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Length: 863 mm
Number of ribs: 4

Fits:
Porsche 928 1982-83
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919221451
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86

Fits:
Porsche 928 1984-86
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919225050
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
Length: 890 mm
Number of ribs: 5
Fits:
Porsche 928 - 1984 to 1986
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919225050
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86


Fits:
Porsche 928 1985-95
Cars with manual transmission only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919226650
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95

Fits:
Porsche 928 1985-95
Cars with manual transmission only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919226650
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95


Fits:
Porsche 928 1987-95
Automatic cars only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919234750
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95

Fits:
Porsche 928 1987-95
Automatic cars only
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919234750
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95

Fits:
Porsche 928 S4 / GT / GTS 1989>>1995
Diagram Ref No 34
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92860711000
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
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.