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Your Vehicle // Porsche // 996 (911) (1997-2005) // 996 GT3 MKII 2003>>
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Water / Coolant Pumps
This OE Match water pump drive belt is a replacement engine drive belt for Porsche 996 and Boxster 986 models without air conditioning. It is designed to match the original-style fitment and function. This replacement belt helps drive the water pump, supporting correct coolant circulation and reliable engine cooling performance.
Fits:
Porsche 996 Carrera 1997 - 2005
Porsche 986 Boxster 1997 - 2004
Diagram ref no 27
The water pump drive belt transfers rotational drive from the engine pulley to the water pump. This allows coolant to circulate through the engine and radiator system, helping regulate engine temperature and protect the engine from overheating.
Functions
• Replaces the water pump drive belt
• Drives the engine water pump
• Supports correct coolant circulation
• Helps maintain stable engine operating temperature
• Suitable for vehicles without air conditioning
• Replaces cracked, glazed, stretched, frayed, noisy, or slipping belts
• OE Match replacement for Porsche 996 and Boxster 986 cooling system service.
Why Replace This Part?
Water pump drive belts wear over time due to heat, engine vibration, pulley contact, age, and tension changes. A worn belt can crack, glaze, stretch, fray, squeal, slip, or fail completely. If the belt fails, the water pump may stop circulating coolant, which can lead to overheating, coolant temperature warnings, or serious engine damage. Replacing the belt helps maintain dependable cooling system performance.
When to Replace This Part
• The water pump drive belt is cracked, glazed, frayed, loose, or worn
• Belt squeal or chirping is heard during start-up or acceleration
• Coolant temperature rises higher than normal
• The water pump, pulleys, or tensioning components are being serviced
• Preventative belt replacement is being carried out during scheduled maintenance
• The cooling system is being inspected or repaired
• The vehicle is undergoing Porsche 996 or Boxster 986 engine service.
Where it fits on the car
This belt fits within the water pump drive system on Porsche 996 and Boxster 986 models without air conditioning. It runs around the relevant pulleys according to the factory belt routing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610215167
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- 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 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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Fits:
Porsche 996 Turbo / GT2 2001>>
Porsche 996 GT3 2000>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610634071
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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Fits:
Porsche 996 Turbo / GT2 2001>>
Porsche 996 GT3 2000>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610634071
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
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OE Match water pump hose, it connects to water pump 99610601176 and forms part of the engine coolant circuit.
Fits
- Porsche 996 Turbo 2001-05
Check fitment for your specific vehicle (model, year, engine) before ordering.
Diagram ref no: 23
What This Product Does
The hose provides a coolant passage at the water pump connection. Its condition and the sealing of its joints help the cooling circuit retain coolant during operation. This product is a replacement hose, not a water pump or pump housing.
Functions
- Carries coolant through the water pump connection.
- Provides the hose connection within the engine cooling circuit.
- Helps maintain coolant containment when correctly fitted.
Technical Details
- Brand: OE Match.
- Hose part number: 99610625074.
- Additional supplied references: 99610625072 and 99610625071.
- Associated water pump: 99610601176.
Symptoms of Fault
- A falling coolant level or recurring coolant warning.
- Moisture, staining or dried deposits at hose connections.
- A noticeable coolant odour around the engine.
- Cracks, bulging or softened sections of hose.
- Coolant seepage following engine shutdown.
- Increasing coolant temperature or gurgling sounds.
Why Replacement Matters
Ageing, repeated heating and contamination can weaken coolant hoses or compromise their connections. Renewing a deteriorated hose addresses a potential source of coolant loss. Inspect adjoining fittings and clamps during the repair, and establish the leak source before replacing components: similar symptoms can originate elsewhere in the cooling system.
FAQs
Does this include the water pump?
The product is the hose associated with pump 99610601176; the pump is a separate component.
How should a suspected leak be checked?
A cooling-system pressure test and inspection of hose ends, clamps and adjoining fittings can help identify the source.
Why might leakage occur only when hot?
Operating temperature and pressure can expose deterioration that is less apparent when the engine is cold.
Do all 996 versions use this hose?
Do not assume interchangeability across the 996 model family. Confirm the listed application and original reference for the vehicle.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610625074
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
Worldwide Delivery
.JPG?width=200&height=150&format=webp&quality=65&iv=rendition-2 "Water pump. Porsche 996 Turbo / 996 GT3 - 99610601175, 99610601172, 99610601173, 99610601174, 99610601177, 99610601176")
The Genuine Porsche 99610601177 is the factory-specified water pump designed for high-performance Porsche 996 and 997 variants (Turbo, GT2, GT3, GT3 RS). circulates coolant through the engine block and radiator, maintaining optimal engine temperature under both normal and demanding driving conditions.
Fits:
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT3 RS 2002 - 2005
Diagram ref no 2
NOTE: Water Pumps DO NOT COME WITH MOUNTING GASKETS.
Please add the gaskets listed below Part No. 99610634071
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601177
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 996 Turbo
Porsche 996 GT3
Porsche 996 GT2
Porsche 996 GT3 RS
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601177
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 996 Turbo
Porsche 996 GT3
Porsche 996 GT2
Porsche 996 GT3 RS
NOTE: Water Pump COMES WITH MOUNTING GASKET.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601177
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
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12 Month Warranty
Worldwide Delivery
The OE-Match water pump is a direct-fit replacement designed for Porsche 996 Turbo / GT-variants models. This replacement water pump provides consistent coolant circulation under varying engine loads - from everyday driving to spirited performance or track use. Its manufactured to OEM standards, allowing plug-and-play installation.
Fits:
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 996 GT3 1999 - 2005
Porsche 996 GT3 RS 2003 - 2004
Diagram ref no 2
NOTE: Water Pump COMES WITH MOUNTING GASKET.
The water pump circulates coolant from the radiator through the engine block and heads, then back to the radiator to reject heat. This circulation prevents the engine from overheating, preserves optimal combustion temperatures, and protects internal components under load or high temperature conditions. With correct flow rates and seal integrity, the OE Match pump ensures stable thermal management across all driving scenarios.
Over time and mileage, the original water pump can suffer from impeller wear, seal degradation, bearing fatigue or corrosion - especially given the demanding thermal environment of the 996’s flat-six engine. A failing pump can lead to reduced coolant flow, overheating, coolant leaks and potential engine damage. Replacing with a correctly specified OE Match unit restores reliable coolant circulation, prevents overheating, and prolongs engine life.
When to replace:
• Coolant leaks visible at pump housing or around gasket/seal area
• Overheating on idle, in traffic or under load - temperature gauge rising above normal
• Unusual noises from the pump area (bearing hum, whine, vibration)
• After many years or high mileage - as part of preventive maintenance (common recommendation every ~4-5 years / ~60,000 miles)
• As part of a cooling-system overhaul (radiator, hoses, thermostat, belt) to ensure all components are fresh and compatible
• If pump’s impeller shows signs of wear or internal corrosion during inspection
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610601177
The product you are viewing cross references to these numbers
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Shop Securely
12 Month Warranty
Worldwide Delivery
Water / Coolant Pumps – Reliable Engine Cooling for Porsche Vehicles
Water / coolant pumps are at the heart of your Porsche’s cooling system. Their job is to circulate coolant through the engine, radiator, and heater core, maintaining the correct operating temperature and preventing overheating. A properly functioning water pump ensures efficient heat transfer, optimal performance, and long-term engine reliability.
At Design911, we supply a wide range of genuine and high-quality water pumps for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, Panamera and the transaxle cars. Each pump is precision-engineered to deliver consistent coolant flow, high durability, and dependable performance - ensuring your Porsche’s engine stays cool under all driving conditions.
What Do Water Coolant Pumps Do?
Water pumps are a critical
part of your engine’s temperature control system. They:
- Circulate coolant between the engine block, radiator, and heater system.
- Regulate temperature by dispersing heat efficiently throughout the system.
- Maintain coolant pressure for consistent engine operation.
- Support performance and longevity, preventing damage from excessive heat.
Without a properly working water pump, coolant circulation stops — leading to overheating, loss of performance, and potential engine failure.
Why Do Water Coolant Pumps Fail?
Even the most durable water
pumps can fail over time due to heat, age, and coolant contamination. Common
causes of failure include:
- Bearing wear or seal leaks caused by prolonged use or poor coolant quality.
- Corrosion or pitting from old or incompatible coolant mixtures.
- Cracked impellers or worn components reducing flow efficiency.
- Coolant leaks around the housing or pulley.
- Age-related wear, especially in high-mileage vehicles.
Signs of failure include visible coolant leaks, high engine temperature, whining noises from the pump area, or reduced cabin heating.
Why Replace a Faulty Water Coolant Pump?
A failing water pump can cause severe engine overheating, loss of coolant, or total breakdown. Replacing a worn pump restores reliable cooling and helps protect your engine from costly damage.
Benefits of
replacement include:
- Restored coolant circulation and cooling efficiency.
- Improved engine reliability and performance.
- Prevention of leaks, overheating, and corrosion.
- Long-lasting, high-quality construction for dependable operation.
All water pumps in this range are built using high-strength materials, precision impellers, and sealed bearings designed to deliver durability, quiet operation, and efficient coolant flow over time.
Porsche Water Pumps: Common Issues, Fixes, and Upgrades #porsche #porscheparts #porscheupgrade
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