OE Match

Synchro Ring 1st Gear.
The OE Match 1st Gear Synchro Ring is a high-quality replacement transmission component designed to facilitate smooth and precise engagement of first gear in Porsche manual gearboxes. Manufactured to OE specifications for fit, accuracy and durability, this synchroniser ring forms a critical part of the gearbox synchronisation system, helping to match gear and shaft speeds before engagement occurs.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L  

Diagram Ref No 39

Working alongside the synchroniser hub, dog teeth and selector sleeve, the synchro ring reduces speed differences between rotating gearbox components, allowing gears to engage smoothly without excessive noise, grinding or wear. Precision engineering ensures reliable operation and helps maintain the shift quality expected from a Porsche transmission.  

What This Product Does:

• Synchronises rotational speeds before first gear engagement.
• Helps ensure smooth and precise gear changes.
• Reduces gear clash and grinding during shifting.
• Works with the synchroniser assembly and dog teeth.
• Improves transmission shift quality and drivability.
• Minimises wear on gearbox engagement components.
• Supports reliable operation of the manual transmission.

Symptoms Of Wear Or Failure:

• Difficulty selecting first gear.
• Gear grinding or crunching during engagement.
• Increased resistance when shifting into first gear.
• Notchy or inconsistent gear changes.
• Requirement to force the gear lever into position.
• Excessive gearbox noise during shifting.
• Premature wear of dog teeth and related synchroniser components.
• Poor shift quality, particularly when the gearbox is cold.

Why Replacement Matters:

• Synchroniser rings are subjected to constant friction and wear every time a gear is selected. Over time, the friction surfaces can wear down, reducing their ability to equalise rotational speeds effectively before gear engagement. This can lead to difficult gear selection, increased transmission noise and accelerated wear of surrounding gearbox components.
• A worn synchro ring can place additional strain on dog teeth, selector sleeves and synchroniser hubs, potentially leading to more extensive and expensive gearbox repairs if left unresolved. Poor synchronisation can also diminish driving enjoyment and compromise the smooth operation of the transmission.
• Replacing a worn first gear synchro ring restores proper synchronisation, improves shift quality and helps protect the transmission from further internal wear. An OE Match replacement provides factory-style fitment, precision manufacturing and long-term durability, ensuring smooth and reliable gearbox performance for your Porsche.

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91530230113

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Dog Teeth 3rd/4th/5th Gear. (3 per gearbox)
G901 2rd to 5th Gear,
G915 3rd to 5th Gear

Manual transmission gear teeth are precision-engineered ridges on the gears inside a manual gearbox. These teeth interlock to transfer power from the engine to the driveshaft. Their exact shape and alignment ensure smooth gear engagement, efficient torque delivery, and dependable performance across all gear ratios. Keeping the gear teeth strong and undamaged is crucial for preventing slippage, maintaining power, and extending the overall life of the transmission.

Fits:
Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera (915 Gearbox)
Porsche 911 1978-1983 3.0L / SC (915 Gearbox)
Porsche 911 1984-1986 3.2L (915 Gearbox)

Signs of Manual Transmission Gear Teeth Failure

• Grinding or whining noises during shifting, often caused by worn or damaged teeth.
• Difficulty engaging gears due to misaligned or broken gear teeth.
• Loss of power or gear slippage when the teeth can no longer mesh correctly.

Diagram Ref no 6, 15, 23.

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90130224203

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Transmission gearbox teeth. Dog teeth 2nd gear. 
G915 up to 1975 1st gear  /  G915 1976>> 2nd. gear

Fits:
Porsche 911 1974-86 (915 Gearbox)

Dog Teeth 2nd Gear 911 1972-86 Symmetrical Tooth Point, 1 slot in hub (915 Trans. 1972-86)

Diagram Ref no 35.

A dog-teeth gear (or synchronizer-gear hub / 1st-2nd gear dog gear) used inside the 915 gearbox. This gear section engages with corresponding hub or clutch-dog components to allow shifting between gears - in particular 1st and/or 2nd gear depending on the configuration.

Gears inside classic 915 transmissions - especially dog / synchronizer-gears - are subject to wear over time: tooth heads can round off, suffer chip-out, or distort under load; synchronizer engagement surfaces may wear and lose precision. This can cause:
• Gear-slip or missed shifts
• Grinding or clash during shifting
• Torque transmission loss or vibration under load
• Accelerated wear of other transmission internals.
Replacing worn gears with a precisely machined, correctly hardened OE-match replacement restores gear-mesh integrity, retains gearbox performance, and helps avoid costly gearbox failure.

When to Replace.
Consider fitting this gear if:
• You hear grinding, clash, or crunching during shifting - especially into 1st or 2nd gear
• Gearbox inspection reveals worn, rounded, chipped, or damaged dog-teeth or synchronizer surfaces
• You are performing a full gearbox rebuild or overhaul
• The gearbox has high mileage or signs of internal wear
•  You want to restore factory-spec shifting performance and reliability

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91530224200

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Dog Teeth 1st Gear.
The OE Match 1st Gear Dog Teeth is a high-quality replacement gearbox component designed for Porsche manual transmissions. Manufactured to OE specifications for fit, precision and durability, this component forms a critical part of the gear engagement mechanism, allowing smooth and secure engagement of first gear during operation.  

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L  

Diagram Ref No 43

The dog teeth ring is fitted to the gear assembly and works in conjunction with the synchroniser hub, synchroniser ring and selector sleeve. It provides the engagement points that lock the selected gear to the transmission shaft, ensuring efficient transfer of engine power through the gearbox. Precision machining is essential for smooth shifting performance and long transmission service life.  

What This Product Does:

• Provides the engagement surface for first gear selection.
• Works with the synchroniser assembly to enable smooth gear changes.
• Locks first gear to the transmission shaft when selected.
• Ensures efficient transfer of engine power through the gearbox.
• Supports accurate and reliable gear engagement.
• Helps minimise transmission wear during shifting.
• Contributes to smooth manual gearbox operation.

Symptoms Of Wear Or Failure:

• Difficulty engaging first gear.
• Gear crunching or grinding during gear selection.
• First gear jumping out of engagement under load.
• Increased resistance when shifting into first gear.
• Poor shift quality or inconsistent engagement.
• Excessive transmission noise during gear changes.
• Visible wear, rounding or chipping of the dog teeth during inspection.
• Premature wear of related synchroniser components.

Why Replacement Matters:

• Dog teeth are subjected to repeated engagement loads every time a gear is selected. Over time, the engagement surfaces can become worn, rounded or damaged, particularly in high-mileage transmissions or vehicles subjected to aggressive shifting. As wear progresses, gear engagement becomes increasingly difficult and less precise.
• A worn dog teeth ring can compromise synchroniser performance and may eventually prevent proper engagement of first gear. Continued operation with worn components can accelerate wear of synchroniser hubs, selector sleeves and other transmission parts, leading to more extensive and costly gearbox repairs.
• Replacing worn first gear dog teeth restores precise gear engagement, improves shift quality and helps protect the transmission from further internal wear. An OE Match replacement provides factory-style fitment, accurate machining and long-term durability, ensuring reliable gearbox operation and preserving the driving experience expected from your Porsche.

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91530224114

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Front Lower Wishbone 

Restore the exceptional handling and driving precision of your Porsche 993 with this OE Match Front Lower Wishbone. Designed specifically for Porsche 993 Carrera models produced between 1994 and 1997, this critical suspension component helps maintain correct wheel alignment, steering response and suspension geometry, ensuring your air-cooled 911 continues to perform as Porsche intended.

Fits:
Porsche 993 (911) C2 1994-97
Porsche 993 (911) C4 1994-97
Porsche 993 (911) C2S 1994-97
Porsche 993 (911) C4S 1994-97
Porsche 993 (911) TURBO 1994-96
Porsche 993 (911) GT2 1994-97
Porsche 993 (911) TURBO S 1994-97

Diagram ref no 12

Manufactured to OE specifications, this replacement lower wishbone delivers the correct fit, strength and durability required for both daily driving and spirited road use. Whether you are refreshing a tired suspension, correcting handling issues or undertaking a complete restoration, replacing worn suspension arms is essential for preserving safety, comfort and performance.

What Does the Front Lower Wishbone Do?

The front lower wishbone, often referred to as a control arm, forms a vital part of the Porsche 993 front suspension system. It connects the wheel carrier assembly to the chassis while controlling wheel movement during suspension travel.

Working together with suspension bushes, ball joints, dampers and steering components, the lower wishbone helps to:

• Maintain accurate wheel alignment.
• Control suspension movement and geometry.
• Improve steering precision and feedback.
• Enhance vehicle stability under braking and cornering.
• Reduce unwanted wheel movement.
• Deliver predictable handling and road holding.

The Porsche 993 introduced significant suspension improvements over previous generations, making properly functioning wishbones critical to maintaining the vehicle's renowned driving characteristics.

Why Do Front Lower Wishbones Fail?

Over time, front suspension components are subjected to significant mechanical stress and environmental exposure. Common causes of wishbone failure include:

• Corrosion caused by moisture and road contaminants.
• Impact damage from potholes, kerbs or road debris.
• Metal fatigue from years of suspension loading.
• Distortion following accidents or suspension impacts.
• Wear around bush and mounting locations.
• Excessive stress caused by worn bushes or ball joints.

As Porsche 993 models continue to mature as modern classics, original suspension components often show signs of wear that can negatively affect ride quality and handling performance.

When Should a Front Lower Wishbone Be Replaced?

The front lower wishbone should be inspected regularly as part of routine suspension maintenance. Replacement may be necessary if you experience:

• Clunking or knocking noises from the front suspension.
• Excessive play in suspension components.
• Uneven tyre wear. Poor steering response or vague handling.
• Vehicle pulling to one side.
• Alignment issues that cannot be corrected.
• Visible corrosion, cracking or impact damage.
• During a complete front suspension rebuild.

Replacing worn wishbones restores suspension accuracy, improves steering feel and helps return the vehicle to factory handling standards.

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99334101

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Front Lower Wishbone 

Restore the precision handling and balanced driving dynamics of your Porsche 944 with this OE Match Front Lower Wishbone, suitable for Porsche 944 models produced between 1984 and 1986. This critical suspension component helps maintain correct wheel alignment, steering response and suspension geometry, ensuring the vehicle performs as Porsche intended.

Fits:

• Porsche 944 2.5L 8V 1982-86

Diagram ref no 2

Manufactured to OE specifications, this replacement lower wishbone provides the correct fit, strength and durability required for both everyday driving and enthusiastic road use. Whether you're rebuilding the front suspension, correcting handling issues or carrying out a full restoration, replacing worn suspension components is essential for maintaining safety and performance.

What Does the Front Lower Wishbone Do?

The front lower wishbone, also known as a control arm, forms a key part of the Porsche 944 front suspension system. It connects the wheel hub assembly to the chassis and controls the movement of the front wheels as the suspension travels over varying road surfaces.

Working together with the suspension bushes, ball joints, dampers and steering components, the lower wishbone helps:

• Maintain accurate suspension geometry.
• Keep the wheels correctly aligned.
• Improve steering precision and driver feedback.
• Support vehicle stability during braking and cornering.
• Control suspension movement and wheel travel.
• Deliver predictable handling characteristics.

The Porsche 944 is renowned for its balanced chassis and precise handling, making properly functioning suspension arms vital to preserving the driving experience.

Why Do Front Lower Wishbones Fail?

Although the wishbone itself is designed to be durable, years of use, road impacts and environmental exposure can eventually lead to wear or damage.

Common causes of failure include:

• Corrosion caused by moisture and road contaminants.
• Damage from potholes, kerb strikes or road debris.
• Metal fatigue after decades of suspension loading.
• Distortion following accidents or heavy impacts.
• Wear around mounting points and bush housings.
• Excessive stress caused by worn suspension bushes or ball joints.

As Porsche 944 models continue to age, many original suspension components may have experienced decades of service and can benefit from replacement during restoration or maintenance work.

When Should a Front Lower Wishbone Be Replaced?

The front lower wishbone should be inspected whenever suspension work is performed. Replacement may be necessary if you experience:

Excessive play in the suspension. Clunking or knocking noises from the front end. Uneven tyre wear. Poor steering response. Vehicle wandering or pulling under braking. Alignment issues that cannot be corrected. Visible corrosion, cracking or physical damage. During a complete front suspension overhaul.

Replacing worn suspension arms helps restore factory handling characteristics, improve steering accuracy and enhance overall driving confidence.

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Front Wishbone (A-Frame)

Restore the precision handling and suspension performance of your classic Porsche 911 with this OE Match Front A Arm Wishbone, designed for Porsche 911 models produced between 1974 and 1989. As a critical component of the front suspension system, the A arm wishbone helps maintain correct wheel alignment, suspension geometry and steering response, ensuring the vehicle delivers the driving characteristics Porsche intended.

Manufactured to OE specifications, this replacement front wishbone provides the correct fit, strength and durability required for both road and enthusiast driving. Whether you're carrying out a complete suspension rebuild, replacing worn components or restoring a classic air-cooled 911, this OE Match A arm offers dependable performance and factory-correct fitment.

What Does the Front A Arm Wishbone Do?

The front A arm wishbone is one of the primary suspension links connecting the front wheel assembly to the vehicle chassis. It allows controlled vertical wheel movement while maintaining proper wheel positioning during acceleration, braking and cornering.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• 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)

Diagram Ref No 14

The wishbone works alongside suspension bushes, ball joints, dampers and anti-roll bar components to:
Maintain correct front suspension geometry.

• Control wheel movement and alignment.
• Improve steering precision and feedback.
• Support vehicle stability during cornering.
• Reduce unwanted suspension movement.
• Deliver predictable handling characteristics.

A properly functioning A arm is essential for preserving the renowned balance and driving dynamics of the classic Porsche 911.

Why Do Front A Arm Wishbones Fail?

Although the wishbone itself is a robust component, years of use and exposure to road conditions can eventually lead to wear, damage or deterioration.

Common causes of failure include:

• Corrosion from moisture and road contaminants.
• Impact damage from potholes, kerbs or road debris.
• Fatigue caused by decades of suspension loading.
• Distortion from accidents or heavy impacts.
• Wear around bush mounting points.
• Damage resulting from seized or deteriorated suspension bushes.

On older Porsche 911 models, suspension components may have been subjected to decades of stress, making inspection and replacement an important part of any restoration or maintenance programme.

When Should a Front A Arm Wishbone Be Replaced?

The front wishbone should be inspected whenever suspension work is carried out. Replacement may be necessary if you experience:

• Excessive play in the suspension.
• Uneven tyre wear.
• Poor steering response.
• Vehicle pulling to one side.
• Clunking or knocking noises from the front suspension.
• Visible corrosion or structural damage.
• Incorrect wheel alignment that cannot be adjusted.
• During a complete front suspension rebuild.

Replacing worn or damaged suspension arms helps restore factory handling characteristics and improves both safety and driving confidence.

Porsche 911 Front Suspension Restoration & Maintenance

For owners searching for a Porsche 911 front wishbone replacement, Porsche 911 A arm, front suspension control arm or classic Porsche suspension rebuild parts, this OE Match component provides an excellent solution for maintaining original suspension performance.

The front suspension system on air-cooled Porsche 911 models plays a vital role in steering precision, road holding and driver confidence. Replacing ageing suspension components alongside bushes, ball joints, anti-roll bar mounts, dampers and steering components helps restore the sharp handling characteristics these iconic sports cars are known for.

Suitable for Porsche 911 G-Series and classic air-cooled models from 1974 to 1989, this OE-quality A arm wishbone offers reliable performance and long-term durability.

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Front lower control arm (wishbone/A-frame) is a direct-fit replacement for the original Porsche component. Engineered for exact fit, durable finish and correct geometry on 1969-73 911 and 1970-76 914-6 models.

Fits:
Porsche 911 1969 - 1973
Porsche 914-6 1970 - 1976

Diagram ref no 12.

Position: Front axle, lower control arm (A-frame) that connects the upright or suspension hub to the chassis.

This wishbone is a critical structural suspension component that maintains correct front wheel alignment, controls camber and caster under load, and anchors the suspension geometry to the chassis. It absorbs lateral, torsional and vertical loads, ensuring your vehicle handles with precision.

Front control arms can suffer from fatigue, corrosion, wear at the mounting bushings, or damage from impact or road debris. When compromised, you may notice uneven tyre wear, loose steering feel, vibration or mis-alignment. A new arm restores correct geometry, return-to-centre feel, and stable road handling.

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Coolant Hose - Water Pump to Solid Coolant Pipe for the Heating System

Maintain reliable coolant circulation and efficient cabin heating with this OE Match Coolant Hose, designed for Porsche 924S and Porsche 944 models. This hose connects the water pump to the solid coolant pipe that feeds the vehicle's heating system, playing a vital role in both engine temperature regulation and heater performance.

Fits:

• 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

Diagram ref no 11

Manufactured to OE specifications, this replacement coolant hose delivers the correct fit, durability and resistance to the high temperatures and pressures found within the Porsche cooling system. Whether you are performing routine maintenance, addressing coolant leaks or restoring a classic transaxle Porsche, replacing ageing coolant hoses helps protect against overheating and cooling system failures.

What Does the Water Pump to Heater Coolant Pipe Hose Do?

The coolant hose connecting the water pump to the solid coolant pipe is an important part of the Porsche 924S and Porsche 944 cooling and heating system. It allows coolant to flow from the water pump into the heater circuit, supplying warm coolant to the heater matrix while maintaining proper coolant circulation throughout the engine.

This hose helps:

• Transfer coolant efficiently through the heating system.
• Maintain stable engine operating temperatures.
• Provide consistent cabin heating performance.
• Support proper coolant circulation throughout the cooling system.
• Prevent pressure loss within the coolant circuit.

Without a properly functioning hose, coolant flow can be compromised, leading to heating issues, coolant leaks and potential engine overheating.

Why Does Coolant Hose 94410624103 Fail?

Like all rubber cooling system components, coolant hoses deteriorate over time due to age and operating conditions. Common causes of failure include:
Continuous exposure to high engine temperatures.

• Coolant chemical degradation.
• Internal hose deterioration.
• Hardening and loss of flexibility.
• Surface cracking and perishing.
• Swelling caused by age and pressure cycles.
• Fatigue around hose clamp connections.

As Porsche 924S and Porsche 944 models continue to age, original coolant hoses often become brittle and prone to sudden failure, even when no external damage is immediately visible.

When Should This Coolant Hose Be Replaced?

Cooling system hoses should be inspected regularly and replaced whenever signs of wear are detected. Replacement is recommended if you notice:

• Coolant leaks around the hose connections.
• Cracks, splits or perishing.
• Bulges or swelling in the hose wall.
• Soft or excessively hardened sections.
• Reduced heater performance.
• Unexplained coolant loss.
• During water pump replacement or cooling system refurbishment.

Preventative replacement is strongly recommended during major cooling system servicing to avoid unexpected breakdowns and expensive engine repairs.

Porsche 924S & 944 Cooling and Heating System Maintenance

For owners searching for a Porsche 944 heater hose replacement, Porsche 924S coolant hose 94410624103, water pump to heater pipe hose or Porsche cooling system repair part, this OE Match replacement provides dependable performance and original-style fitment.

The cooling and heating systems on Porsche transaxle models rely on a network of hoses, pipes and coolant passages to maintain temperature control and cabin comfort. Replacing ageing coolant hoses alongside the water pump, thermostat, expansion tank, radiator hoses and heater components helps preserve reliability and maximise cooling efficiency.

Suitable for a range of Porsche 924S and Porsche 944 applications, this OE-quality hose is designed to restore proper coolant circulation and heating system performance.

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94410624103

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Radiator Top Hose for Porsche 944 Turbo 

Maintain optimal cooling system performance in your Porsche 944 turbo with this OE Match Radiator Top Hose. Specifically designed for Porsche 944 turbo (951) models produced between 1985 and 1991, this high-quality replacement hose ensures reliable coolant circulation between the engine and radiator, helping to maintain stable operating temperatures under both normal and high-performance driving conditions.

Fits:

• Porsche 944 Turbo 2.5L 8V 1985-88
• Porsche 944 Turbo 2.5L 8V 1989-91
• Porsche 944 Turbo S 2.5L 8V 1988

Diagram ref no 14

Manufactured to match original equipment specifications, this radiator top hose provides excellent fitment, durability and resistance to the elevated temperatures and pressures generated by the turbocharged Porsche 951 engine. Whether you're restoring a classic Porsche, carrying out preventative maintenance or addressing cooling system issues, replacing ageing coolant hoses is essential for preserving engine reliability.

What Does the Radiator Top Hose Do?

The radiator top hose is a critical component of the Porsche 944 Turbo cooling system. Its primary function is to transport hot coolant from the engine to the radiator, where heat is dissipated before the coolant recirculates through the engine.

Turbocharged engines generate significantly higher thermal loads than naturally aspirated models, making efficient coolant flow especially important. The radiator top hose must withstand constant exposure to high temperatures, pressure fluctuations and engine vibration while maintaining a secure and leak-free connection.

A properly functioning radiator top hose helps:

• Maintain correct engine operating temperatures.
• Prevent overheating during spirited driving.
• Ensure efficient coolant circulation.
• Support overall cooling system performance.
• Protect critical engine components from heat-related damage.

Why Do Porsche 944 Turbo Radiator Top Hoses Fail?

Over time, the original rubber hose is subjected to extreme operating conditions. Common causes of failure include:

• Heat-related rubber hardening and deterioration.
• Internal breakdown caused by ageing coolant.
• Surface cracking and perishing.
• Pressure fatigue from repeated heating and cooling cycles.
• Swelling and softening from prolonged coolant exposure.
• Weakening around hose clamp locations.
• Small splits that develop into major coolant leaks.

As many Porsche 944 Turbo models are now over 30 years old, original cooling system hoses are often well beyond their intended service life.

When Should the Radiator Top Hose Be Replaced?

Routine inspection of all cooling system hoses is strongly recommended. Replacement should be considered if you observe:

• Coolant leaks near the radiator or engine.
• Cracks, bulges or visible deterioration.
• Soft, spongy or excessively hard hose sections.
• Coolant loss without obvious explanation.
• Engine temperature fluctuations.
• Signs of coolant residue around hose connections.
• During major cooling system servicing or restoration work.

Preventative hose replacement is significantly less expensive than repairing damage caused by overheating and coolant loss.

Porsche 944 turbo (951) Cooling System Maintenance

For enthusiasts searching for a Porsche 944 Turbo radiator top hose replacement, Porsche 951 coolant hose, OE Match 95110624101 hose or Porsche 944 Turbo cooling system repair parts, this replacement hose provides the correct fit and performance expected for the turbocharged transaxle Porsche platform.

The Porsche 951 cooling system operates under demanding conditions and relies on properly functioning hoses to maintain coolant flow and pressure. Replacing ageing coolant hoses alongside thermostats, water pumps, radiators, expansion tanks and cooling system sensors helps ensure maximum reliability and cooling efficiency.

This OE Match radiator top hose is designed to meet the requirements of Porsche 944 Turbo models from 1985 to 1991 and offers dependable performance for both road and enthusiast use.

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Radiator Top Hose 

Keep your Porsche 944 cooling system operating at peak efficiency with this OE Match Radiator Top Hose, designed specifically for Porsche 944 models manufactured between 1985 and 1991. This critical cooling system component provides a reliable connection between the engine and radiator, ensuring the continuous flow of coolant needed to regulate engine temperatures and prevent overheating.

Fits:

• 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

Diagram ref no 9

Manufactured to OE specifications, this replacement radiator top hose delivers excellent fitment, durability and resistance to the high temperatures and pressures experienced within the Porsche 944 cooling system. Whether you are carrying out preventative maintenance, repairing a coolant leak or restoring a classic transaxle Porsche, replacing worn cooling hoses is essential for long-term reliability.

What Does the Radiator Top Hose Do?

The radiator top hose is one of the most important hoses within the Porsche 944 cooling system. It carries hot coolant from the engine to the radiator, where excess heat is dissipated before the coolant circulates back through the system.

Without a properly functioning radiator top hose, coolant flow can become restricted or interrupted, leading to overheating, pressure loss and potential engine damage. The hose must withstand constant temperature fluctuations, pressure changes and vibration while maintaining a secure seal at both ends.

Why Do Radiator Top Hoses Fail?

Over time, radiator hoses naturally deteriorate due to exposure to heat, pressure and coolant chemicals. Common causes of failure include:

• Age-related rubber hardening and cracking.
• Internal hose degradation from coolant contamination.
• Swelling caused by prolonged heat exposure.
• Surface perishing and loss of flexibility.
• Weakening around hose clamp connection points.
• Splits, bulges or soft spots developing within the hose wall.

Many Porsche 944 models are now several decades old, making cooling system hose replacement an important preventative maintenance task.

When Should the Radiator Top Hose Be Replaced?

Radiator hoses should be inspected regularly and replaced whenever signs of wear become evident. Replacement is recommended if you notice:

• Coolant leaks around the hose connections.
• Cracked, brittle or swollen rubber.
• Coolant smells after driving.
• Soft or excessively hard hose sections.
• Unexplained coolant loss.
• Rising engine temperatures or overheating concerns.
• During cooling system overhauls or engine restoration projects.

Replacing ageing hoses before failure occurs can help prevent expensive engine repairs and roadside breakdowns.

Porsche 944 Cooling System Hose Replacement

For owners searching for a Porsche 944 upper radiator hose replacement, OE match coolant hose, Porsche 944 cooling system repair parts or radiator hose upgrade, this component offers an ideal solution that maintains original cooling system performance.

A healthy cooling system is essential for preserving engine reliability, particularly on classic Porsche models. Replacing ageing radiator hoses alongside thermostats, water pumps, expansion tanks, coolant sensors and other cooling system components can significantly improve system efficiency and long-term dependability.

Designed for Porsche 944 models produced from 1985 to 1991, this OE-quality radiator top hose provides dependable coolant flow and helps maintain stable operating temperatures under all driving conditions.

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Radiator to Expansion Tank Hose - Large

Maintain the reliability and efficiency of your Porsche 944 cooling system with this OE Match Radiator to Expansion Tank Hose, designed specifically for Porsche 944 models manufactured between 1982 and 1985. This coolant hose provides a vital connection between the radiator and the expansion tank, allowing excess coolant and pressure to circulate correctly throughout the cooling system.

Fits:

• Porsche 944 2.5L 8V 1982-87

Diagram ref no 10

Manufactured to match original equipment specifications, this replacement hose ensures a precise fit, dependable sealing performance, and long-lasting resistance to heat, pressure and coolant exposure. Whether you're restoring a classic Porsche 944 or carrying out preventative maintenance, replacing ageing cooling system components is essential to protect your engine from overheating and costly repairs.

What Does the Radiator to Expansion Tank Hose Do?

The radiator to expansion tank hose forms an important part of the Porsche 944 cooling system. It allows coolant to move between the radiator and the expansion tank as temperatures and system pressures fluctuate during engine operation.

As coolant heats up, it expands and flows into the expansion tank. As the engine cools, coolant is drawn back into the radiator, helping maintain the correct coolant level and preventing air from entering the system. This process ensures consistent engine temperatures and optimum cooling performance.

Why Do Radiator to Expansion Tank Hoses Fail?

Over time, coolant hoses are exposed to extreme temperature cycles, pressure changes, vibration and chemical degradation from coolant additives. Common causes of failure include:

• Rubber hardening and cracking due to age.
• Internal deterioration caused by coolant contamination.
• Swelling and weakening from prolonged heat exposure.
• Surface cracking and perishing.
• Hose clamp wear causing leaks at connection points.
• Loss of flexibility leading to splits under pressure.

As Porsche 944 vehicles continue to age, original hoses become increasingly susceptible to failure, even if they appear visually acceptable from the outside.

When Should the Hose Be Replaced?

It is recommended to inspect cooling system hoses during every service and replace them if any signs of wear are present. Consider replacement if you notice:

• Coolant leaks around the radiator or expansion tank.
• Cracked, brittle or swollen hose material.
• Coolant smells after driving.
• Unexplained coolant loss.
• Overheating issues.
• During cooling system refurbishment or restoration work.

Preventative replacement helps avoid roadside breakdowns and protects the engine from overheating damage.

Porsche 944 Cooling System Hose Replacement & Maintenance

For owners searching for Porsche 944 coolant hose replacement parts, cooling system restoration components, radiator hose upgrades or expansion tank hose replacements, this OE Match hose provides a cost-effective and reliable solution.

The Porsche 944 cooling system relies on correctly functioning hoses to maintain coolant circulation, pressure control and temperature stability. Replacing ageing coolant hoses alongside expansion tanks, thermostats, radiator components and coolant sensors can significantly improve long-term reliability.

Suitable for Porsche 944 models from 1982 to 1985, this OE-quality replacement hose offers the fit, performance and durability expected from a premium cooling system component.

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

94410624501

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Lower radiator to water pump coolant hose.
Direct-fit replacement hose for the radiator lower hose on Porsche 944 road cars (models 1985 through 1989). It connects the bottom outlet of the radiator to the water pump inlet, forming a critical part of the engine’s coolant circulation system. Precision-moulded to original shape and dimensions, this hose fits exactly as the factory part did - ensuring correct routing, secure sealing, and reliable coolant flow under pressure and high engine temperatures. 

Fits:

• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89
• Porsche 944S 2.5L 16V 1987-88

Diagram ref no 8

• Application: Lower radiator hose — radiator bottom outlet → water pump inlet.
• Ideal Use Cases: Cooling system maintenance, hose replacement during service, overheating prevention, or when original hose shows wear, cracks or leaks.

Coolant hoses are subject to continuous heat cycling, coolant chemical exposure, and flexing from engine vibration. Over time the rubber can degrade - becoming brittle, soft, cracked, or swollen. A failing radiator hose may lead to:
•  Coolant leaks - causing low coolant levels or visible drips under the car.
•  Engine overheating - risking long-term engine damage or immediate breakdown.
•  Loss of coolant pressure or air ingress - potentially reducing cooling system efficiency.
Using a new hose restores reliable coolant circulation, helps prevent leaks, supports stable engine temperature, and reduces the risk of costly engine overheating or damage.

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

94410623707

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Alternator Fan Pulley For Cars *WITHOUT AIR INJECTION*

The OE Match Alternator Fan Pulley is a high-quality replacement engine component designed for Porsche models equipped without an air injection system. Manufactured to OE specifications for fit, balance and durability, this pulley forms a critical part of the engine cooling and charging system drive assembly.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• 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)  

Diagram Ref No 8

Mounted within the alternator and cooling fan drive system, the pulley transfers rotational force from the engine belt to drive the alternator and engine cooling fan. Correct pulley operation ensures efficient charging system performance while maintaining the airflow required to cool the engine. Precision manufacturing helps provide smooth operation, accurate belt alignment and reliable long-term performance.

What This Product Does:

• Transfers engine drive power to the alternator and cooling fan assembly.
• Maintains correct cooling fan operating speed.
• Supports efficient engine cooling.
• Enables proper alternator operation and battery charging.
• Ensures accurate drive belt alignment.
• Helps minimise belt wear and slippage.
• Contributes to reliable engine and electrical system performance.

Symptoms Of Wear Or Failure:

• Squealing or chirping noises from the engine bay.
• Drive belt slippage.
• Excessive belt wear.
• Charging system performance issues.
• Battery warning light illumination.
• Reduced engine cooling efficiency.
• Visible pulley wear, cracking or damage.
• Pulley wobble or misalignment.
• Vibration from the alternator or fan assembly.
• Belt throwing or repeated belt failures.

Why Replacement Matters:

• Alternator fan pulleys are subjected to constant rotational loads, engine vibration, belt tension and temperature fluctuations. Over time, pulley surfaces can wear, become damaged or develop alignment issues that affect belt operation and drive system efficiency.
• A worn pulley can lead to belt slippage, reduced alternator output and inadequate cooling fan performance. If left unresolved, this may result in battery charging problems, overheating risks, accelerated belt wear and potential damage to related drive system components. In severe cases, pulley failure can cause complete loss of alternator and cooling fan operation.
• Replacing a worn alternator fan pulley restores proper belt alignment, reliable power transmission and efficient cooling system performance. An OE Match replacement provides factory-style fitment, precise engineering and dependable durability, helping maintain the performance and reliability of your Porsche engine and charging system.

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

93010620902

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Radiator Hose Bottom To Water Pump.
The OE Match Radiator Hose Bottom to Water Pump is a high-quality replacement cooling system hose designed to carry cooled coolant from the lower section of the radiator directly to the engine water pump. Manufactured to OE specifications for fit, durability and performance, this hose is a vital component in maintaining efficient coolant circulation and engine temperature control.

Fits:

Diagram Ref No 8

Constructed from premium heat-resistant and coolant-resistant rubber materials, the hose is engineered to withstand continuous exposure to temperature fluctuations, coolant pressure and engine bay conditions. It ensures a secure and leak-free connection between the radiator and water pump, helping to maintain the effectiveness of the entire cooling system.  

What This Product Does:

• Transfers cooled coolant from the radiator to the water pump.
• Supports continuous coolant circulation throughout the engine.
• Helps maintain correct engine operating temperatures.
• Provides a secure and leak-resistant connection within the cooling system.
• Assists in preventing engine overheating.
• Supports efficient cooling system performance.
• Contributes to long-term engine reliability and protection.

Symptoms Wear Or Failure:

• Visible coolant leaks around the hose or connections.
• Coolant drips beneath the vehicle.
• Low coolant level warnings.
• Engine overheating or fluctuating temperature readings.
• Sweet coolant smell from the engine bay.
• Cracks, splits or bulges in the hose material.
• Soft, swollen or brittle rubber construction.
• Coolant residue around hose fittings.
• Loss of cooling system pressure.

Why Replacement Matters:

• Lower radiator hoses operate in demanding conditions and are continuously exposed to coolant flow, pressure changes, heat cycles, vibration and environmental ageing. Over time, the rubber material can deteriorate, harden, crack or weaken, increasing the likelihood of leaks or sudden hose failure.
• A damaged radiator hose can lead to coolant loss, reduced cooling efficiency and engine overheating. If coolant circulation is interrupted, critical engine components may be exposed to excessive temperatures, potentially resulting in costly engine repairs. Even minor leaks can progressively worsen and compromise the reliability of the cooling system.
• Replacing a worn radiator hose restores proper coolant circulation, helps maintain correct engine temperatures and protects against overheating-related damage. An OE Match replacement provides factory-style fitment, dependable durability and long-term performance, ensuring reliable operation of your Porsche cooling system.

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

94410623705

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Heater Hose Supply.
The OE Match Heater Hose Supply is a high-quality replacement cooling and heating system component designed to carry hot engine coolant from the engine cooling circuit to the vehicle's heater matrix. Manufactured to OE specifications for fit, durability and performance, this hose plays a critical role in providing efficient cabin heating while maintaining proper coolant circulation throughout the vehicle.

Fits:

• Porsche 944 2.5L 8V 1982-87
• Porsche 944 2.7L 8V 1988-89  

Diagram Ref No 25

Constructed from premium heat-resistant rubber materials, the heater supply hose is engineered to withstand continuous exposure to high coolant temperatures, pressure fluctuations and engine bay conditions. It provides a secure and reliable connection within the heating system, helping to ensure consistent climate control performance and cooling system efficiency.  

What This Product Does:

• Transfers heated engine coolant to the heater matrix.
• Supports efficient cabin heating performance.
• Maintains coolant circulation within the heating system.
• Helps regulate interior temperature control.
• Provides a secure and leak-resistant coolant pathway.
• Supports overall cooling system efficiency.
• Contributes to reliable HVAC system operation.

Symptoms Of Wear Or Failure:

• Coolant leaks around the hose or connections.
• Low coolant level warnings.
• Reduced or inconsistent cabin heating performance.
• Sweet coolant smell inside or outside the vehicle.
• Coolant residue around hose fittings.
• Visible cracking, splitting or swelling of the hose.
• Soft, brittle or deteriorated rubber material.
• Engine overheating caused by coolant loss.
• Moisture or coolant pooling beneath the vehicle.

Why Replacement Matters:

• Heater supply hoses operate in demanding conditions and are continuously exposed to hot coolant, pressure changes, vibration and environmental ageing. Over time, the rubber hose material can harden, crack, weaken or swell, increasing the risk of leaks and cooling system failure.
• A damaged heater hose can result in coolant loss, poor heater performance and reduced cooling system efficiency. If coolant levels drop significantly, the engine may overheat, potentially causing serious and costly engine damage. Even minor leaks can worsen over time and compromise vehicle reliability.
• Replacing a worn heater supply hose restores proper coolant flow, improves heating system performance and helps maintain correct engine operating temperatures. An OE Match replacement provides factory-style fitment, dependable durability and long service life, ensuring reliable operation of both the cooling and heating systems in your Porsche.

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

94457258701

The product you are viewing cross references to these numbers