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Belts / Tensioners / Rollers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
46mm diameter – 28mm wide
Fits:
Porsche 924S 1986-88
Porsche 944 1983-89*
Porsche 944 S, 944 S2, 944 Turbo
Porsche 968 1992-95
*see Notes 2 & 3
Note 1: Also fits early 87 924S up to engine # 43H01919 (Manual Trans) & 43H60384 (Auto Trans)
Note 2: Also fits early 87 924S from engine # 43H01920 (Manual Trans) & 43H60385 (Auto Trans)
Note 3: Early cars (83-86) that have been updated to the later style waterpump with belt guard rail will use this roller.
Snap a timing belt on this type of motor and the valves stop opening and closing, but those pistons keep slamming up and down. Bent valves, broken lifters, even a broken camshaft could be the outcome! Keep the relationship between your pistons and valves civil by performing proper timing and balance shaft belt maintenance. Due to the complexity and options, please choose all of the parts that apply to your vehicle carefully.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 6.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410524104
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
This is a high-quality cam-/timing-belt idler/guide roller designed to replicates the original manufacturer specifications for diameter, width, bearing quality. Cam idler roller maintaining correct belt tension and alignment so that the camshafts, crankshaft (and in balance-shaft applications) remain perfectly synchronised. If the idler becomes worn or seizes, the belt can deviate, skip teeth or fail, potentially leading to catastrophic engine damage.
Fits:
Porsche 924S 1986 - 1988
Porsche 944 1983 - 1989*
Porsche 944 S, 944 S2, 944 Turbo
Porsche 968 1992 - 1995
* see Notes 2 & 3
Note 1: Also fits early 87 924S up to engine # 43H01919 (Manual Trans) & 43H60384 (Auto Trans)
Note 2: Also fits early 87 924S from engine # 43H01920 (Manual Trans) & 43H60385 (Auto Trans)
Note 3: Early cars (83-86) that have been updated to the later style water pump with belt guard rail will use this roller.
Diagram ref no 6
• Position on Vehicle: his part mounts in the timing belt drive system (camshaft-belt/guide roller area) on the front of the engine block, often adjacent to the belt guard/rail for the water pump/temporal belt path.
• Applications: Timing belt drive systems in the above-listed Porsche models (924S, 944, 968). Suitable replacement when restoring or maintaining correct cam/ crank timing and belt drive reliability.
The timing belt idler roller plays a crucial role in maintaining precise belt alignment and smooth engine operation. Over time, the bearing can wear out or seize, risking belt failure and serious engine damage. Replacing the roller during scheduled maintenance ensures long-term reliability, quiet operation, and protection of vital engine components.
When and why to replace:
• Signs of wear, noise, or rough bearing movement.
• During timing belt or water-pump service for easy access and complete system refresh.
• Preventative maintenance on high-mileage or older vehicles with original rollers.
• To prevent costly repairs caused by belt misalignment or breakage.
• To restore smooth, quiet belt operation and consistent timing performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410524104
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
This OE Match cam belt is a replacement engine timing belt for Porsche 944 S / S2 models from 1987 to 1991 and Porsche 968 models from 1992 to 1996. It is designed to match the original-style fitment and function. This replacement timing belt helps synchronise camshaft operation, supporting correct valve timing, smooth engine running, and reliable engine performance.
Fits:
Porsche 944 S/S2 1987 - 1991
Porsche 968 1992 - 1996
Diagram Ref No 4
The cam belt forms part of the engine timing system and helps keep the camshaft movement synchronised with engine operation. Correct camshaft timing is essential for smooth running, power delivery, fuel efficiency, and long-term engine reliability.
Functions
• Replaces the cam belt / timing belt
• Supports correct camshaft timing
• Helps synchronise valve train operation
• Maintains smooth and reliable engine running
• Replaces cracked, worn, stretched, contaminated, or aged belts
• Suitable for scheduled timing belt service and preventative maintenance
• OE Match replacement for Porsche 944 S / S2 and 968 engine timing service.
Why Replace This Part?
Cam belts wear with age, mileage, heat, oil contamination, tension changes, and repeated engine use. A worn or overdue cam belt can crack, fray, stretch, lose teeth, or fail without warning. Timing belt failure can cause poor running, loss of valve timing, non-start issues, or serious engine damage. Replacing the belt at the correct service interval helps protect the engine and maintain reliable performance.
When to Replace This Part
• The timing belt service interval is due
• The cam belt is cracked, frayed, glazed, contaminated, or worn
• Belt teeth are damaged or missing
• The belt has been exposed to oil, coolant, or dirt
• Timing belt tension is incorrect or unstable
• Tensioners, rollers, water pump, or front engine seals are being replaced
• Preventative replacement is being carried out during major engine service.
Where it fits on the car
This cam belt fits within the engine timing belt / camshaft drive system on Porsche 944 S, 944 S2, and 968 models. It runs around the relevant camshaft and timing pulleys according to the factory timing layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410532303
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Genuine Porsche OE cam belt / timing belt for Porsche 944 S, 944 S2 and 968 models. This original Porsche toothed belt is used in the camshaft drive system on Porsche 16-valve DOHC engines, helping keep the crankshaft and camshafts correctly synchronised for accurate valve timing.
Fits:
Porsche 944 S/S2 1987 - 1991
Porsche 968 1992 - 1996
Diagram Ref No 4.
What This Part Does / Functions
• Synchronises crankshaft and camshaft rotation
• Maintains correct valve timing during engine operation
• Drives the camshaft gear / camshaft timing system
• Supports smooth running, correct combustion and engine performance
• Helps prevent timing slip when installed and tensioned correctly
• Provides OE Porsche tooth profile, length and fitment
• Replaces a worn, aged, cracked or contaminated timing belt
• Helps protect the engine from timing-related failure when serviced at the correct interval.
Why Replace This Part?
The cam belt is a critical engine service item. Over time, the belt can age, crack, stretch, wear or become contaminated by oil or coolant. If the belt slips or fails, the camshafts and crankshaft can move out of synchronisation, which may cause serious internal engine damage. Replacing it with a Genuine Porsche OE cam belt helps maintain accurate engine timing and supports the reliability of the 16-valve Porsche engine. During replacement, it is recommended to inspect the tensioners, rollers, water pump, balance shaft belt and related timing components.
When to Replace This Part
• During scheduled timing belt service.
• If the belt is cracked, frayed, glazed or visibly worn.
• If the belt has been contaminated by oil, coolant or debris.
• If the belt age or mileage is unknown.
• When recommissioning a stored Porsche 944 S/S2 or 968
• During camshaft, cylinder head, water pump, tensioner or roller service
• If timing belt noise, tracking issues or tension problems are present
• When restoring the engine with correct OE Porsche service parts
Where It Fits on the Car
This belt fits at the front of the engine, within the camshaft timing drive system. It runs around the timing pulleys and camshaft gear arrangement on the 16-valve DOHC engine.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410532303
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Teeth Quant.: 119,
Width: 25 mm | Length: 1133 mm

Fits:
Porsche 944 S/S2 1987-91
Porsche 968 1992-96
Click 'Zoom in' for large parts diagram.
Diagram Ref No 4.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410532303
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94

Fits:
Porsche 924S 1986-88
Porsche 944 1982-91
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 3.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410220504
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 356B 1959-63
- Porsche 356C 1963-65
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
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90007437201
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Porsche ref no 00072192000.

Fits:
Porsche 924 S
Porsche 944
Porsche 968
This tool is necessary for the exchange of the timing belt and allows the countering of the wheels during the process.
Made in Germany.
Note:
Trying to block the waves with pliers or lever is strongly discouraged: Not only by slipping the tool, but also by burrs on the roller, the new belt can be damaged.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1113
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Made in Germany

Fits:
Porsche 924S
Porsche 944
Porsche 968
Description:
The tool is for loosening and tightening the hard to reach running / tensioning rollers and allows a secure and defined tightening.
The tool has been specially developed for this application only and allows the correct replacement of the balance shaft belt and / or timing belt. The narrow design of the keyhole and the double offset offer the best possible accessibility to the key areas behind the rollers.
The key is 100% German produced. Material and component geometry were designed for the maximum load cases in this application. The corrosion protection is galvanic blue galvanizing.
Note:
Only an outdated 24mm wide version of the tool is available at Porsche although the manufacturers of the wheels are already adjusted to 27mm.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
1130
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
Porsche 924S 1986-88
Porsche 944 1982-91 all models
Porsche 968 1992-95 all models
Fits cars with power steering.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919223650
The product you are viewing cross references to these numbers
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94

Fits:
Porsche 924S 1986-88
Porsche 944 1982-91 all models
Porsche 968 1992-95 all models
Fits cars with power steering.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 20.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919223650
The product you are viewing cross references to these numbers
- Porsche 944S2 3.0L 16V 1989-91

Fits:
Porsche 944 S 1989-91
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410503309
The product you are viewing cross references to these numbers
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
Fits:
Porsche 924S 1987-88
Porsche 944 1987-91
Porsche 968 1992-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410521302
The product you are viewing cross references to these numbers
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.