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Drive belt deflection roller. Porsche 996 / Boxster 987 / 997 - 99710211800
99710211800/1
Vehicle Group
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Information
Drive belt deflection roller.
This tensioner (or idler) pulley is designed for Porsche 911 (996/997) and Boxster/Cayman vehicles. It supports the serpentine/drive belt system, ensuring smooth, stable rotation and correct belt alignment. It helps maintain proper tension, reduces noise, and protects engine accessories from excessive stress. Built to original Porsche standards and engineered for precise fitment and durability.
Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 987C 2.7L / 3.4L 2005-08 Manual transmission
Diagram ref no 15
Ideal replacement when the original pulley shows signs of wear, bearing noise, belt misalignment or visible belt damage - restoring accessory-drive reliability and avoiding secondary damage from belt failure.
The idler pulley plays a critical role in your accessory belt drive, maintaining the correct path and tension of the belt that powers many engine-mounted systems. When the pulley bearing deteriorates, or the surface becomes worn or grooved, the belt can slip, make noise, or even break—potentially causing loss of alternator, AC compressor or power-steering function. By replacing this component proactively with a quality OE-Match unit, you safeguard those systems and maintain proper engine accessory operation.
When and why to replace:
• Audible bearing noise or rumble coming from the pulley/belt area.
• Visible belt wear, glazing, fraying or mis-tracking across the pulley surface.
• Occasional belt slippage or accessory drive belt squeal on start-up or load.
• Accessory drive servicing (belt replacement, tensioner replacement) where it makes sense to fit the pulley at the same time.
• Higher-mileage vehicle where original pulley may have been in service for many years and bears may be near end-of-life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710211800
The product you are viewing cross references to these numbers
This tensioner (or idler) pulley is designed for Porsche 911 (996/997) and Boxster/Cayman vehicles. It supports the serpentine/drive belt system, ensuring smooth, stable rotation and correct belt alignment. It helps maintain proper tension, reduces noise, and protects engine accessories from excessive stress. Built to original Porsche standards and engineered for precise fitment and durability.
Fits:
Porsche 996 Carrera 3.4L / 3.6L 1997-05 6-speed Manual transmission
Porsche 997.1 Carrera 3.6L / 3.8L 2005-08 Manual transmission
Porsche 987.1 Boxster 2.7L / 3.2L / 3.4L 2005-08 Manual transmission
Porsche 987C.1 Cayman 987C 2.7L / 3.4L 2005-08 Manual transmission
Diagram ref no 15
Ideal replacement when the original pulley shows signs of wear, bearing noise, belt misalignment or visible belt damage - restoring accessory-drive reliability and avoiding secondary damage from belt failure.
The idler pulley plays a critical role in your accessory belt drive, maintaining the correct path and tension of the belt that powers many engine-mounted systems. When the pulley bearing deteriorates, or the surface becomes worn or grooved, the belt can slip, make noise, or even break—potentially causing loss of alternator, AC compressor or power-steering function. By replacing this component proactively with a quality OE-Match unit, you safeguard those systems and maintain proper engine accessory operation.
When and why to replace:
• Audible bearing noise or rumble coming from the pulley/belt area.
• Visible belt wear, glazing, fraying or mis-tracking across the pulley surface.
• Occasional belt slippage or accessory drive belt squeal on start-up or load.
• Accessory drive servicing (belt replacement, tensioner replacement) where it makes sense to fit the pulley at the same time.
• Higher-mileage vehicle where original pulley may have been in service for many years and bears may be near end-of-life.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99710211800
99710211800
4149031110
The product you are viewing cross references to these numbers
Price: £49.95
Arriving soon
Related products
Vehicle Group
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 Turbo S 3.0L 1993-94
Information
Alternator belt
OE Match alternator belt for Porsche 944 and 968 models without air conditioning. This replacement drive belt helps power the alternator and support correct charging system operation.
Fits:
Porsche 944 1989-91 Cars without air conditioning
Porsche 968 1992-95 Cars without air conditioning
Diagram ref no 6
The alternator belt transfers rotational drive from the engine pulley to the alternator. This allows the alternator to generate electrical power for the vehicle and charge the battery while the engine is running. A correctly tensioned and good-condition belt is essential for reliable electrical system operation.
Functions
• Replaces the alternator drive belt
• Drives the alternator from the engine pulley
• Supports correct battery charging
• Helps maintain electrical system performance
• Suitable for vehicles without air conditioning
• Replaces cracked, glazed, stretched, frayed, or slipping belts
• OE Match replacement for Porsche 944 and 968 charging system service.
Why Replace This Part?
Alternator belts wear over time due to heat, engine vibration, pulley contact, age, and tension changes. A worn belt can crack, glaze, stretch, fray, squeal, or slip on the pulleys. If the belt fails, the alternator may stop charging the battery, which can lead to warning lights, electrical faults, flat battery issues, or vehicle breakdown. Replacing the belt helps maintain dependable charging system operation.
When to Replace This Part
• The alternator belt is cracked, glazed, frayed, loose, or worn
• Belt squeal is heard during start-up or acceleration
• The battery warning light appears
• Charging system output is low or inconsistent
• The alternator, pulleys, or tensioning components are being serviced
• Preventative belt replacement is being carried out during maintenance
• The vehicle is undergoing Porsche 944 or 968 engine bay refurbishment.
Where it fits on the car
This belt fits on the alternator drive system on Porsche 944 and 968 models without air conditioning. It runs between the relevant engine pulley and alternator pulley according to the factory belt routing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919229051
The product you are viewing cross references to these numbers
OE Match alternator belt for Porsche 944 and 968 models without air conditioning. This replacement drive belt helps power the alternator and support correct charging system operation.
Fits:
Porsche 944 1989-91 Cars without air conditioning
Porsche 968 1992-95 Cars without air conditioning
Diagram ref no 6
The alternator belt transfers rotational drive from the engine pulley to the alternator. This allows the alternator to generate electrical power for the vehicle and charge the battery while the engine is running. A correctly tensioned and good-condition belt is essential for reliable electrical system operation.
Functions
• Replaces the alternator drive belt
• Drives the alternator from the engine pulley
• Supports correct battery charging
• Helps maintain electrical system performance
• Suitable for vehicles without air conditioning
• Replaces cracked, glazed, stretched, frayed, or slipping belts
• OE Match replacement for Porsche 944 and 968 charging system service.
Why Replace This Part?
Alternator belts wear over time due to heat, engine vibration, pulley contact, age, and tension changes. A worn belt can crack, glaze, stretch, fray, squeal, or slip on the pulleys. If the belt fails, the alternator may stop charging the battery, which can lead to warning lights, electrical faults, flat battery issues, or vehicle breakdown. Replacing the belt helps maintain dependable charging system operation.
When to Replace This Part
• The alternator belt is cracked, glazed, frayed, loose, or worn
• Belt squeal is heard during start-up or acceleration
• The battery warning light appears
• Charging system output is low or inconsistent
• The alternator, pulleys, or tensioning components are being serviced
• Preventative belt replacement is being carried out during maintenance
• The vehicle is undergoing Porsche 944 or 968 engine bay refurbishment.
Where it fits on the car
This belt fits on the alternator drive system on Porsche 944 and 968 models without air conditioning. It runs between the relevant engine pulley and alternator pulley according to the factory belt routing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99919229051
99919229050
99919228250
99919228450
99919229051
The product you are viewing cross references to these numbers
Price: £5.50
In stock
Vehicle Group
- 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 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Information
Timing camshaft belt (cam belt)
This OE Match timing camshaft belt, also known as a cam belt, is a replacement engine timing belt for Porsche 924S and 944 models. It is designed to match the original-style fitment and function. This replacement cam belt helps synchronise crankshaft and camshaft movement, supporting correct valve timing and reliable engine operation.
Fits:
Porsche 924S 1986 - 1988
Porsche 944 1982 - 1991 (V8)
Porsche 944 Turbo
Diagram Ref No 5.
The timing camshaft belt connects the crankshaft and camshaft drive system, keeping valve timing correctly synchronised with piston movement. A good timing belt is essential for engine performance, smooth running, and preventing serious timing-related engine damage.
Functions
• Replaces the timing camshaft belt / cam belt
• Synchronises crankshaft and camshaft movement
• Supports correct valve timing
• Helps maintain smooth engine running and performance
• Replaces cracked, worn, contaminated, stretched, or aged timing belts
• Suitable for scheduled timing belt service and preventative maintenance
• OE Match replacement for Porsche 924S and 944 engine timing service.
Why Replace This Part?
Timing belts wear with age, mileage, heat, oil contamination, tension changes, and repeated engine use. A worn or overdue cam belt can crack, lose teeth, stretch, fray, or fail without warning. Timing belt failure can cause poor running, loss of valve timing, non-start issues, or severe engine damage. Replacing the belt at the correct service interval helps protect the engine and maintain reliable operation.
When to Replace This Part
• The timing belt service interval is due
• The cam belt is cracked, frayed, glazed, contaminated, or worn
• Timing belt teeth are damaged or missing
• The belt has been exposed to oil, coolant, or dirt contamination
• Timing belt tension is incorrect or unstable
• The water pump, tensioners, rollers, or front engine seals are being replaced
• Preventative replacement is being carried out during major engine service.
Where it fits on the car
This belt fits within the engine timing belt / camshaft drive system on Porsche 924S and 944 models. It runs between the relevant crankshaft and camshaft pulleys according to the factory timing layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410515704
The product you are viewing cross references to these numbers
This OE Match timing camshaft belt, also known as a cam belt, is a replacement engine timing belt for Porsche 924S and 944 models. It is designed to match the original-style fitment and function. This replacement cam belt helps synchronise crankshaft and camshaft movement, supporting correct valve timing and reliable engine operation.
Fits:
Porsche 924S 1986 - 1988
Porsche 944 1982 - 1991 (V8)
Porsche 944 Turbo
Diagram Ref No 5.
The timing camshaft belt connects the crankshaft and camshaft drive system, keeping valve timing correctly synchronised with piston movement. A good timing belt is essential for engine performance, smooth running, and preventing serious timing-related engine damage.
Functions
• Replaces the timing camshaft belt / cam belt
• Synchronises crankshaft and camshaft movement
• Supports correct valve timing
• Helps maintain smooth engine running and performance
• Replaces cracked, worn, contaminated, stretched, or aged timing belts
• Suitable for scheduled timing belt service and preventative maintenance
• OE Match replacement for Porsche 924S and 944 engine timing service.
Why Replace This Part?
Timing belts wear with age, mileage, heat, oil contamination, tension changes, and repeated engine use. A worn or overdue cam belt can crack, lose teeth, stretch, fray, or fail without warning. Timing belt failure can cause poor running, loss of valve timing, non-start issues, or severe engine damage. Replacing the belt at the correct service interval helps protect the engine and maintain reliable operation.
When to Replace This Part
• The timing belt service interval is due
• The cam belt is cracked, frayed, glazed, contaminated, or worn
• Timing belt teeth are damaged or missing
• The belt has been exposed to oil, coolant, or dirt contamination
• Timing belt tension is incorrect or unstable
• The water pump, tensioners, rollers, or front engine seals are being replaced
• Preventative replacement is being carried out during major engine service.
Where it fits on the car
This belt fits within the engine timing belt / camshaft drive system on Porsche 924S and 944 models. It runs between the relevant crankshaft and camshaft pulleys according to the factory timing layout.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
94410515704
94410515703
94410515704
The product you are viewing cross references to these numbers
Price: £20.95
In stock
Vehicle Group
- 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
Information
Cam belt
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
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
94410532302
94410515706
94410532300
94410532301
94410532303
The product you are viewing cross references to these numbers
Price: £41.40
In stock