CASE COMP,THERMO

Engine Thermostat Housing Assembly for Honda Cooling System

Why you need it

This housing secures the thermostat, seals the coolant path, and directs flow between engine and radiator. It keeps the engine in the ideal temperature zone for power, economy, and long life. A tight housing with a fresh O-ring prevents leaks and air entry, protecting the water pump, head gasket, and heater core.

How it works ️

When the engine is cold, the thermostat inside the housing stays shut, letting the engine warm quickly. As coolant reaches operating temp, the thermostat opens and the housing routes flow to the radiator. The molded passages, hose necks, and sensor ports ensure steady circulation and accurate temperature control.

If the housing fails

Cracks or warped flanges cause coolant loss, air pockets, and overheating. A stuck thermostat or distorted seat leads to slow warm-up, weak cabin heat, high fan time, or boiling in traffic. You may see P0128, rising temp gauge, sweet smell, or white crust near the joint. Continuous leaks risk head warpage.

Tech notes

Install with a new seal, clean mating surfaces, and torque evenly. Refill with Honda-type coolant and bleed air. Check hoses and sensors during service.

Compatibility

• Accord
• Accord Tourer
• Civic
• Cr-V I-Ctdi
• Cr-V I-Dtec
• Cr-V
• Accord 4D Almas
• Accord 4D
• Accord Wgn Alma
• Accord Wagon
• Odyssey Almas
• Odyssey
• Elysion
• Civic 3D
• Civic 4D
• Elysion Prestig