Motorad CH4025 Engine Coolant Thermostat Housing

OE-Style Thermostat Housing for Mitsubishi and Plymouth

The Motorad CH4025 engine coolant thermostat housing is built to OE quality standards for dependable cooling-system service. It is made from steel with a silver finish and includes a gasket/seal and plug for the listed applications.

Fits 1990-1994 Mitsubishi Eclipse and 1990-1994 Plymouth Laser, with housing, gasket, and plug included in the application notes.

Key Features

• Steel construction for cooling-system durability
• Silver finish
• Gasket or seal included
• 2 mounting holes
• Thermal shock validated and 100% leak tested
• Meets or exceeds OEM standards

Detailed Product Information

Motorad CH4025 is an engine coolant thermostat housing manufactured by an OE supplier to meet OEM quality expectations. The housing is engineered for demanding cooling-system conditions and uses proprietary material selection to support consistent performance in service. This part cross-references Gates 85074 for the same application.

For Mitsubishi Eclipse and Plymouth Laser models in the 1990-1994 range, the CH4025 provides a direct replacement option for thermostat housing service where the original housing has corroded, warped, or begun leaking. The steel construction and included seal help restore a secure coolant passage at the thermostat mounting point.

Common Repair Uses

• Coolant leakage at the thermostat housing
• Corrosion or pitting on the original housing
• Warped sealing surfaces causing seepage
• Cooling-system service on Mitsubishi Eclipse or Plymouth Laser
• Replacement of a cracked or damaged thermostat housing

Installation Notes and Tips

Verify the mounting pattern and thermostat housing style before installation. Clean the mating surfaces thoroughly, inspect the thermostat and adjacent coolant hoses, and confirm the seal seats evenly before tightening the housing to specification. The part number CH4025 should be matched to the vehicle application and engine configuration before assembly.

Quality Assurance

Motorad manufactures this housing to OE quality standards, with thermal shock validation and 100% leak testing to help confirm sealing integrity. The CH4025 is built to meet or exceed OEM standards for the listed Mitsubishi Eclipse and Plymouth Laser applications.