Dorman 902-5172 Engine Coolant Thermostat Housing Assembly

Reliable Engine Coolant Thermostat Housing Assembly for BMW Models

The Dorman 902-5172 Engine Coolant Thermostat Housing Assembly is designed to maintain optimal engine temperature for select BMW vehicles. Engineered with durable plastic and a standard gasket, this thermostat housing assembly ensures efficient coolant flow and temperature regulation.

• Constructed from durable black plastic for corrosion resistance
• Includes thermostat with a 207°F opening temperature for precise engine temperature control
• Standard gasket included for a secure, leak-free seal
• Features one mounting hole and three outlet ports for proper coolant routing
• Compatible with BMW 528i, 530i, 740i, and 740Li models

Product Details and Specifications

This Dorman thermostat housing assembly (part number 902-5172) is made from high-quality plastic material designed to withstand engine heat and pressure. The black housing features a 1.25-inch inside diameter, accommodating the coolant flow requirements of your BMW 528i, 530i, 740i, or 740Li. The assembly includes one thermostat calibrated to open at 207 degrees Fahrenheit, ensuring your engine maintains optimal operating temperature. The package contains one sensor, one thermostat housing, and one thermostat, along with a standard gasket to prevent leaks. Note that mounting hardware is not included.

Compatible Vehicles and Common Applications

This thermostat housing assembly is compatible with the following BMW models:

• BMW 528i
• BMW 530i
• BMW 740i
• BMW 740Li

It is designed to replace worn or damaged thermostat housings that can cause engine overheating, coolant leaks, or poor temperature regulation.

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to thermostat failure
• Coolant leaks from cracked or damaged housing
• Erratic engine temperature fluctuations
• Reduced engine performance caused by improper coolant flow
• Failed temperature sensor readings affecting engine management

Installation Notes and Tips

When installing the Dorman 902-5172 thermostat housing assembly, ensure the engine is cool before beginning work. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly before installing the new gasket and housing to ensure a proper seal. Since mounting hardware is not included, reuse existing bolts or source appropriate replacements. Verify coolant levels and check for leaks after installation.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. This thermostat housing assembly undergoes rigorous quality control to ensure proper fit and function. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Consult product documentation or the manufacturer for exact warranty terms.