2.5 LITER. Coupe. A threaded rod with a drive head (such as hex, 12 point, torx, etc.) on one end used to secure the Heater Control Valve Solenoid to it's mounting point. Automatic Transmission Oil Cooler Bolt. Engine Water Pump Bolt. Automatic Transmission. Engine Water Pump. HVAC Heater Control Valve Solenoid. Mount bracket. Retainer plate.