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Belts / Tensioners / Rollers

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DISPLAYING 1 to 16 (of 33 products)
1 2 3
BELTKIT05
Product Information
Product Information
Cam / balance belt kit.

Fits:
Porsche 968 3.0L

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.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BELTKIT05
94410563110
94410524104
94410524102
94410532302

The product you are viewing cross references to these numbers
WATERPUMP.968.GEB
Product Information
Product Information
Water pump, Thermostat, Cam & Balance Belt Kit Porsche 968 3.0L

Fits:
Porsche 968 3.0L

Changing the water pump, pulley, and belts on an older Porsche 944 is essential for maintaining the car’s performance and preventing expensive repairs down the line. Here’s why: 

 1. Water Pump: The water pump is crucial for keeping the engine cool by circulating coolant throughout the system. Over time, the seals can wear out, and the pump itself can become less efficient or even fail completely. A failed water pump can cause the engine to overheat, leading to severe engine damage, which is costly to repair. Since the water pump is typically driven by the timing belt, replacing it during a timing belt service is a preventive measure. 

 2. Pulley: The pulleys, including the ones for the timing belt and accessory belts, can degrade over time due to wear and tear. If a pulley starts to fail, it can cause the belt to misalign or slip, which can lead to loss of power to critical systems like the water pump, alternator, or power steering. A worn-out pulley might also cause abnormal noises (like squealing) or vibrations, and in the worst case, it can lead to belt failure or further engine damage. 

 3. Belts: The timing belt and accessory belts (serpentine or V-belts) stretch and wear over time. A snapped timing belt can cause catastrophic engine damage, especially on interference engines like the 944’s. The accessory belts keep things like the alternator, air conditioning, and power steering working properly, and if they break, you’ll lose those functions—and possibly risk engine overheating if the water pump is driven by one of those belts. 

 4. Preventive Maintenance: On older cars, these parts have a limited lifespan, and replacing them as part of regular maintenance helps avoid major issues. The 944 is a well-built car, but its aging components need attention. Replacing the water pump, pulleys, and belts before they fail ensures your car runs smoothly and can help avoid the inconvenience and cost of unexpected breakdowns. 

 5. Improved Reliability: By proactively replacing these parts, you improve the overall reliability of your 944, ensuring that you can enjoy it without worrying about the engine overheating or being stranded due to a failed belt or pulley. In short, regular replacement of the water pump, pulleys, and belts is part of smart ownership for an older Porsche 944, helping preserve the engine’s health and longevity.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WATERPUMP.968.GEB
94410563110
94410524104
94410524102
94410532302

The product you are viewing cross references to these numbers
WATERPUMP.968.OEM
Product Information
Product Information
Water pump, Thermostat, Cam & Balance Belt Kit Porsche 968 3.0L

Fits:
Porsche 968 3.0L

Changing the water pump, pulley, and belts on an older Porsche 944 is essential for maintaining the car’s performance and preventing expensive repairs down the line. Here’s why: 

 1. Water Pump: The water pump is crucial for keeping the engine cool by circulating coolant throughout the system. Over time, the seals can wear out, and the pump itself can become less efficient or even fail completely. A failed water pump can cause the engine to overheat, leading to severe engine damage, which is costly to repair. Since the water pump is typically driven by the timing belt, replacing it during a timing belt service is a preventive measure. 

 2. Pulley: The pulleys, including the ones for the timing belt and accessory belts, can degrade over time due to wear and tear. If a pulley starts to fail, it can cause the belt to misalign or slip, which can lead to loss of power to critical systems like the water pump, alternator, or power steering. A worn-out pulley might also cause abnormal noises (like squealing) or vibrations, and in the worst case, it can lead to belt failure or further engine damage. 

 3. Belts: The timing belt and accessory belts (serpentine or V-belts) stretch and wear over time. A snapped timing belt can cause catastrophic engine damage, especially on interference engines like the 944’s. The accessory belts keep things like the alternator, air conditioning, and power steering working properly, and if they break, you’ll lose those functions—and possibly risk engine overheating if the water pump is driven by one of those belts. 

 4. Preventive Maintenance: On older cars, these parts have a limited lifespan, and replacing them as part of regular maintenance helps avoid major issues. The 944 is a well-built car, but its aging components need attention. Replacing the water pump, pulleys, and belts before they fail ensures your car runs smoothly and can help avoid the inconvenience and cost of unexpected breakdowns. 

 5. Improved Reliability: By proactively replacing these parts, you improve the overall reliability of your 944, ensuring that you can enjoy it without worrying about the engine overheating or being stranded due to a failed belt or pulley. In short, regular replacement of the water pump, pulleys, and belts is part of smart ownership for an older Porsche 944, helping preserve the engine’s health and longevity.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WATERPUMP.968.OEM
94410563110
94410524104
94410524102
94410532302

The product you are viewing cross references to these numbers
92860302101/1
Product Information
Product Information
Alternator pulley modification kit for squeaky belt.

Fits:
Porsche 944 S2 - 1989 to 1991
Porsche 968 - 1992 to 1995
Porsche 968 CS - 1993 to 1995

Does your Alternator / Air Con multi belt always squeak? 
By fitting this kit you can solve this problem with the addition of an extra pulley. 
The multi-ribbed belt has a better grip on the air conditioning pump and alternator, so the chance of slipping and squeaking is greatly reduced. 
This is because the extra roller provides extra contact surface on the pulley of the A/C pump. 
The additional idler pulley is easy fit to the alternator mounting with the bolt supplied. 

Kit contains:
•  Multi belt
•  Idler pulley
•  Spacer for the idler pulley 
•  Bolt
•  Rings 
•  Nut 



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

92860302101
99919229950

The product you are viewing cross references to these numbers
99919229951/1
Product Information
Product Information
Alternator Belt & Aircon drive belt. 1000 mm.

meyle

Fits:
Porsche 924s 1986-88 Cars with air conditioning
Porsche 944 1985-91 Cars with air conditioning
Porsche 968 1992-95 Cars with air conditioning

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99919229951
99919229950
99919228350
99919228550
99919229150
050 006 1000
99919229951

The product you are viewing cross references to these numbers
Special Order item
99919229952
Product Information
Product Information
Alternator Belt & Air con drive belt. 1000 mm.

Fits:
Porsche 924s 1986-88 Cars with air conditioning
Porsche 944 1985-91 Cars with air conditioning
Porsche 968 1992-95 Cars with air conditioning

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99919229952
99919229950
99919228350
99919228550
99919229150
99919229951
99919229952

The product you are viewing cross references to these numbers
Special Order item
99919229051
Product Information
Product Information
Alternator belt
Genuine Porsche OE alternator belt for Porsche 944 and 968 models. It drives the alternator, supports correct battery charging and helps maintain reliable electrical system operation. Ideal for routine maintenance, alternator service or replacing a cracked, slipping or worn original belt.

Fits:
Porsche 944 1989-91 Cars without air conditioning
Porsche 968 1992-95 Cars without air conditioning

Diagram ref no 6

This belt is commonly listed for Porsche 944 and 968 transaxle models, particularly applications without air conditioning / A/C delete specification, depending on model year and equipment.

Cross-reference / related numbers include: 99919229050, 99919228250, 99919228450

What This Part Does / Functions
Drives the alternator from the engine pulley system
 Helps the alternator charge the battery while the engine is running
 Supports correct operation of the vehicle electrical system
 Helps maintain stable voltage supply to electrical components
 Provides factory-correct belt size and fitment where specified
 Replaces a worn, cracked, stretched or noisy alternator belt
 Maintains OE Porsche belt-drive reliability and fit.

Why Replace This Part?
The alternator belt is a wear item and can deteriorate from age, heat, tension, pulley wear and general engine operation. A worn belt may crack, glaze, stretch, squeal or slip, which can reduce alternator output and lead to charging system problems. Replacing the belt with a Genuine Porsche OE alternator belt helps restore correct alternator drive, charging performance and factory belt fitment.

When to Replace This Part
  If the alternator belt is cracked, glazed or frayed
  If the belt squeals or slips during engine operation
  If the battery warning light appears due to poor alternator drive
  During routine belt inspection or scheduled maintenance
  When replacing alternator, pulleys or belt tensioning components
  If the belt has become stretched or tension cannot be set correctly
  When recommissioning a stored Porsche 944 or 968
  When restoring the belt drive system with correct OE Porsche parts.

Where It Fits on the Car
This belt fits on the front engine accessory drive system, where it drives the alternator from the engine pulley arrangement. Exact routing depends on model year, engine type and whether the vehicle has air conditioning or an A/C delete setup.

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
99919229051/1
Product Information
Product Information
Alternator belt.
Width: 21 mm | Length: 720 mm
Number of ribs: 6

The DAYCO alternator belt (6PK720) is an OEM-quality multi-rib drive belt manufactured to meet or exceed original equipment specifications, it provides reliable power transmission from the crankshaft to the alternator, ensuring the battery remains charged and the vehicle's electrical systems operate efficiently. It is a direct replacement for Porsche part 99919229051.

Fits:
Porsche 944 1989-91 Cars without air conditioning
Porsche 968 1992-95 Cars without air conditioning

Diagram ref no 6

Drives the alternator to keep the battery charged and supply power to the vehicle's electrical systems. It ensures efficient power transmission while helping maintain reliable engine accessory operation.

Key Features & Benefits
Genuine DAYCO OEM-quality drive belt
 Direct replacement for Porsche 99919229051
 High-strength multi-rib (poly-V) construction
 Excellent resistance to heat, wear, and stretching
 Quiet, smooth operation
•  Helps maintain reliable charging system performance

Why Replacing an Alternator Belt Matters
The alternator belt is constantly exposed to heat, tension, and engine vibration. As it wears, it can slip or crack, reducing charging efficiency and potentially leaving the vehicle without electrical power. Replacing the belt at the recommended service interval helps maintain reliable charging performance and prevents unexpected breakdowns.

When to Replace the Alternator Belt
  Visible cracks, fraying, or glazing on the belt
  Squealing noises from the engine bay
  Battery warning light illuminated
  Reduced charging performance
  During major engine or accessory servicing
  At the manufacturer's recommended replacement interval

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99919229051
99919229050
99919228250
99919228450
6PK720
99919229051

The product you are viewing cross references to these numbers
99919229051/2
Product Information
Product 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
99919229050
99919228250
99919228450
99919229051

The product you are viewing cross references to these numbers
94410227706/2
Product Information
Product Information
Balance belt idler roller.
Outer diameter: 49.8 mm,
Width: 22 mm

oematch

Fits:
Porsche 924S 1986-88
Porsche 944 1982-91 all models
Porsche 968 1992-95 all models

Click 'Zoom in' for large parts diagram.
Diagram Ref No 11.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410227706
94410227701
94410227702
94410227703
94410227704
94410227706
604210

The product you are viewing cross references to these numbers
Special Order item
94410202507
Product Information
Product Information
Balance belt tensioner gear.

porsche

Fits:
Porsche 924S 2.5 M44.01,M44.03 M44.07 M44.08
Porsche 944 2.5 M44.01 1981/06- 1984/12
Porsche 944 2.5 M44.07 M44.40 M44.50 1985/01- 1988/07
Porsche 944 2.5 M44.51 1987/08-1988/08
Porsche 944 2.5 M44.52 1988/09-1991/07
Porsche 944 2.7 M44.11 1988/09- 1989/08
Porsche 944 3.0 16V M44.41 1988/12-1991/07
Porsche 968 3.0 M44.43 M44.44 1992-

Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410202507
94410202507

The product you are viewing cross references to these numbers
94410202507/2
Product Information
Product Information
Balance belt tensioner gear. Porsche 924S / 944 / 968

oematch

Fits:
Porsche 924S 2.5 M44.01,M44.03 M44.07 M44.08
Porsche 944 2.5 M44.01 1981/06- 1984/12
Porsche 944 2.5 M44.07 M44.40 M44.50 1985/01- 1988/07
Porsche 944 2.5 M44.51 1987/08-1988/08
Porsche 944 2.5 M44.52 1988/09-1991/07
Porsche 944 2.7 M44.11 1988/09- 1989/08
Porsche 944 3.0 16V M44.41 1988/12-1991/07
Porsche 968 3.0 M44.43 M44.44 1992-

Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410202507
94410202507

The product you are viewing cross references to these numbers
Special Order item
94410221904
Product Information
Product Information
Balance shaft belt.

porsche

Fits:
Porsche 924S 1986-88
Porsche 944 1982-91 all models
Porsche 968 1992-95 all models

Click 'Zoom in' for large parts diagram.
Diagram Ref No 14.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410221904
94410221904

The product you are viewing cross references to these numbers
94410221904/1
Product Information
Product Information
Balance shaft belt.
Width: 18 mm | Length: 1048 mm
Number of Teeth: 110 | Tooth Pitch: 9,525 mm

gates

Fits:
Porsche 924S 1986-88
Porsche 944 1982-91 all models
Porsche 968 1992-95 all models

Click 'Zoom in' for large parts diagram.
Diagram Ref No 14.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410221904
94410221904
94568
5463XS

The product you are viewing cross references to these numbers
3609509441
Product Information
Product Information
Balance shaft delete kit.

To help remove all the balance shaft belt and ancillary products on 944/968 which is only way to make the engine run smoother (After you’ve removed that stuff these bungs to plug up the holes on the engine, so it does leak from where the shafts used to be).

So, engine will still run without all that balance shaft belt and ancillary, maybe a bit rougher but will save a bit of engine power not having to drive all that stuff and engine weight. (Crankshaft/Camshaft timing is on a separate timing belt on 944/968) 
Replacement Porsche part no 94410292300.

Fits:

  • Porsche 944S 2.5L 16V 1987-88 M44.40 engines
  • Porsche 924S 2.5L 1987-88  M44.10 engines
  • Porsche 944S2 3.0L 16V 1989-91 M44.41 engines
  • Porsche 944 Turbo 2.5L 8V 1987-91 M44.52 engines
  • Porsche 944 Turbo S 2.5L 8V 1988>> M44.52 engines
  • Porsche 968 3.0L 1992-94 M44.43 engines
  • Porsche 968 Sport 3.0L 1994-95 M44.43 engines
  • Porsche 968 CS 3.0L 1993-95 M44.43 engines
  • Porsche 968 Turbo S 3.0L 1993-94 M44.43 engines

Click 'Zoom in' for large parts diagram.
Diagram ref no 1



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3609509441
94410292300

The product you are viewing cross references to these numbers
Special Order item
94410524104
Product Information
Product Information
Cam idler roller.
porsche

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
94410524104
94410524103

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 33 products)
1 2 3
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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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