The thermostat is a critical component of the engine cooling system, regulating coolant flow between the engine and radiator to maintain optimal operating temperature. On Jaguar's AJ-V8 and inline-six engines fitted to the X200, X100, and X350 platforms, a faulty thermostat commonly causes overcooling, poor fuel economy, slow cabin heat, or conversely, overheating if the valve sticks closed. Replacing a failed unit with the correct OEM-specification part restores accurate temperature regulation and protects the engine from thermal damage. Key Features OEM-referenced part number AJ82697-G ensures correct opening temperature rating for Jaguar AJ-V8 and AJ6 engine applications Direct replacement unit - fits into the existing thermostat housing without modification Meets original equipment specification for coolant flow rate and valve travel Replace the thermostat housing seal or O-ring simultaneously to prevent coolant leaks after installation Vehicle Fitment This thermostat fits the Jaguar X200 S-Type, X100 (XK8), and X350 (XJ6/XJ8), covering cooling and climate control system applications across these model ranges. Not sure about fitment? Feel free to get in touch at [email protected]