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The thermostat is located at the rear of the engine, directly above the transaxle bell housing.
Fig. 2: Thermostat mounting detail-VE30DE engines
Fig. 3: Remove the inlet hose and the three inlet pipe bolts ... Fig. 4: ... then pull off the inlet pipe ... Fig. 5: ... and remove the thermostat from the housing Fig. 6: Use liquid gasket to form a seal on the inlet pipe Fig. 7: Aftermarket gaskets are also availableTo install:
Fig. 8: Make sure the thermostat pintle is in the upward position
2003 Jetta left rear window blue plastic part of the