Dorman 902-2700 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for GM Vehicles

The Dorman 902-2700 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for a range of GM vehicles including Cadillac, Chevrolet, GMC, Hummer, and Pontiac models. This assembly combines a thermostat, housing, and O-ring gasket to ensure efficient coolant flow and temperature regulation.

• Constructed from durable aluminum with a natural finish for corrosion resistance
• Includes thermostat calibrated to open at 180°F for precise temperature control
• O-ring gasket included for a secure, leak-free seal
• Designed with three mounting holes and a 1.3-inch inside diameter outlet port
• Compatible with multiple GM models such as Silverado 1500, Escalade, Tahoe, and Corvette

Product Features and Specifications

This thermostat housing assembly features a 4.376-inch flange length, 2.75-inch flange width, and 0.35-inch flange thickness, providing a robust mounting surface. The aluminum construction offers strength and heat dissipation, while the included thermostat opens at 180 degrees Fahrenheit to regulate engine coolant flow effectively. The assembly contains one outlet port and three mounting holes spaced 3 inches center to center, ensuring proper fitment and secure installation. The O-ring gasket helps prevent coolant leaks, maintaining system integrity.

Compatible GM Models and Applications

The Dorman 902-2700 is compatible with a wide range of GM vehicles, including but not limited to:

• Cadillac Escalade, Escalade ESV, Escalade EXT
• Chevrolet Silverado 1500, 2500, 3500, Suburban 1500, Tahoe, Trailblazer EXT
• GMC Sierra 1500, 2500, 3500, Yukon, Yukon XL 1500, Yukon XL 2500
• Hummer H2
• Pontiac Firebird, Camaro, Corvette
• Chevrolet Avalanche 1500, Express 1500, 2500, 3500, Savana 1500, 2500, 3500
• GMC Envoy XL, Sierra HD models, and SSR

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to thermostat failure or housing leaks
• Coolant leaks caused by worn or damaged O-ring gaskets
• Inconsistent engine temperature regulation affecting performance
• Corrosion or cracking in original thermostat housing
• Replacement of faulty thermostat to restore proper coolant flow

Installation Notes and Tips

Installation requires removal of the old thermostat housing assembly and cleaning of the mounting surface to ensure a proper seal. The included O-ring gasket should be seated correctly to prevent leaks. Note that mounting hardware is not included, so original bolts should be reused or replaced as needed. Verify the thermostat opening temperature matches vehicle specifications before installation. Proper torque on mounting bolts is essential to avoid damage to the aluminum housing.

Quality Assurance and Warranty Information

Dorman manufactures this thermostat housing assembly to meet or exceed OEM standards for fit, form, and function. The aluminum construction and included thermostat are designed for durability and reliable operation. This product includes a gasket for leak prevention and is backed by Dorman's limited warranty, providing coverage against defects in materials and workmanship under normal use.