Water Flange On Thermostat (MP9) (Volkswagen Golf III / Jetta III / Polo I) is a crucial engine cooling system component designed for select Volkswagen models. This unit serves as the mounting point for the thermostat, regulating coolant flow between the engine and radiator to maintain optimal operating temperature. It is tailored to fit Volkswagen Golf III, Jetta III, and Polo I models, ensuring compatibility where this specific water flange design is specified.
The water flange connects directly to the engine block and houses the thermostat, controlling when coolant circulates to prevent overheating or overcooling. When replacing this part, confirm the match with your existing thermostat flange by comparing the shape, mounting holes, and connection points. This ensures proper seal and function within your vehicle’s cooling system.
Check the part number or vehicle application listed to ensure it fits your Volkswagen model. If uncertain about compatibility or installation, consulting the sales desk or submitting a request for the correct part may help. This component is listed under thermostats and is identified by SKU BB-251330.
- Fits Volkswagen Golf III, Jetta III, and Polo I
- Functions as a mounting flange for the thermostat
- Ensures effective coolant flow management in engine cooling
Need help matching this item to your vehicle? Use more Thermostat, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.





