Dorman 902-5843 Engine Coolant Thermostat Housing Assembly

Overview of Dorman Engine Coolant Thermostat Housing Assembly

The Dorman 902-5843 Engine Coolant Thermostat Housing Assembly is designed for precise temperature regulation in select Mercedes-Benz models. This assembly includes a thermostat, sensor, o-ring, and seal to ensure reliable engine cooling system performance.

• Material: Durable black plastic construction
• Includes thermostat with 212°F opening temperature
• Comes with a standard gasket and seal for leak prevention
• Features one outlet port and three mounting holes
• Flange dimensions: length 3.459", width 3.183", thickness 0.689"
• Inside diameter of 1.8 inches for proper coolant flow
• Compatible with multiple Mercedes-Benz models including C43 AMG, GLE450, and S450

Detailed Product Description

The Dorman 902-5843 thermostat housing assembly is engineered from high-quality plastic to resist corrosion and withstand engine heat cycles. It includes a thermostat calibrated to open at 212 degrees Fahrenheit, ensuring optimal engine temperature control. The assembly features three mounting holes with precise bolt hole center measurements of 1.872", 2.305", and 2.812" to match factory specifications. The included standard gasket and seal help maintain a secure, leak-free connection between the housing and engine block. This assembly is designed without a bleeder hole and includes one outlet port for coolant flow management.

Compatible Mercedes-Benz Models and Applications

• Mercedes-Benz C43 AMG, C400, C450 AMG
• Mercedes-Benz CLS400
• Mercedes-Benz E43 AMG, E400, E450
• Mercedes-Benz GL450, GLC43 AMG
• Mercedes-Benz GLE43 AMG, GLE400, GLE450, GLE450 AMG, GLE500, GLE500e, GLE550e
• Mercedes-Benz GLS450
• Mercedes-Benz ML400
• Mercedes-Benz S400, S450, S450L, S550e, S560e
• Mercedes-Benz SL400, SL450
• Mercedes-Benz SLC43 AMG

Common Issues Addressed by This Thermostat Housing Assembly

• Engine overheating due to thermostat failure
• Coolant leaks from damaged or worn housing seals
• Inconsistent engine temperature regulation
• Cracked or warped thermostat housing causing coolant loss
• Faulty temperature sensor readings affecting engine performance

Installation Notes and Tips

Ensure the engine is cool before beginning installation to avoid burns. Remove the old thermostat housing carefully to prevent damage to surrounding components. Clean the mounting surface thoroughly before installing the new gasket and housing assembly. Torque mounting bolts to manufacturer specifications to prevent leaks. Verify proper thermostat operation by monitoring engine temperature after installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 902-5843 thermostat housing assembly includes a thermostat and sensor tested for reliable operation. While specific warranty details are not provided, Dorman typically offers limited warranties covering defects in materials and workmanship.