Water pump & thermostat insert kit Porsche Cayenne 957 4.5L  ❭  WATERPUMP.957.1.OEM1

Water pump & thermostat insert kit for Porsche Cayenne 9PA1 (957) 4.5L models, combining key cooling components in one package to support correct fit and temperature control.

What This Product Does This kit groups a replacement water pump with a thermostat insert and sealing components so the main cooling and temperature-control parts can be renewed together. Servicing these items at the same time helps maintain stable engine temperature and consistent coolant circulation.

Functions

• Circulates coolant through the engine and radiator via the water pump
• Controls coolant flow with the thermostat to regulate operating temperature
• Allows combined renewal of related cooling components in one job
• Helps reduce the risk of leaks from aged housings and seals
• Supports reliable warm-up and stable running temperature

Symptoms of Fault

• Coolant leaks or dried residue around the water pump or thermostat area
• Rising or fluctuating temperature gauge, especially under load
• Coolant smell after driving or visible puddles under the front of the vehicle
• Whining or grinding noises from the pump/belt area
• Repeated low coolant warnings or intermittent overheating
• Poor cabin heat or slow warm-up linked to thermostat issues

Why Replacement Matters

Age, mileage and heat cycles can cause water pump bearings, seals, housings and thermostat mechanisms to wear. This may show as leaks, noise, unstable temperature or warning messages. Replacing the pump and thermostat insert together reduces duplicate labour, helps restore dependable coolant circulation and temperature control, and lowers the risk of overheating-related engine damage, particularly on higher-mileage Cayenne V8 models.

Fits

• Porsche 957 Cayenne S/GTS 4.8L 2007–10