Dorman 902-5843 Engine Coolant Thermostat Housing Assembly

Engine Coolant Thermostat Housing Assembly

Dorman 902-5843 is a replacement engine coolant thermostat housing assembly for select Mercedes-Benz models. It is built with a black plastic housing, a standard gasket, and an integrated thermostat set to open at 212 degrees F for direct cooling-system service.

Key Features

• Replacement thermostat housing assembly for select Mercedes-Benz applications
• Plastic housing with black finish
• Thermostat included with 212 degrees F opening temperature
• Gasket or seal included for installation
• One outlet port and three mounting holes
• Engineered to match stock fit and durability for specified vehicles
• Built to handle repeated temperature swings for longer service life

Detailed Description

This Dorman thermostat housing assembly is designed for Mercedes-Benz cooling-system repairs where the original housing has cracked, warped, or begun leaking. Part number 902-5843 follows the stock-style layout with a 1.8 inside diameter, standard gasket type, and a single outlet port, helping restore proper coolant flow and thermostat control. It cross-references Motorad 785-212 and URO 2762000315 for the same application. Compatible With Mercedes-Benz C43 AMG, GLC43 AMG, E450, GLE43 AMG, S450, S450L, S560e, SL450, SLC43 AMG, GLE400, GLE450, GLE500e, GLS450, E400, E43 AMG, GLE550e, CLS400, GLE450 AMG, GLE500, S550e, C450 AMG, GL450, SL400, C400, ML400, and S400 applications listed in the fitment data.

Common Repair Reasons

• Coolant seepage at the thermostat housing
• Cracked or heat-damaged plastic housing
• Thermostat sticking open or closed
• Temperature fluctuations from worn cooling components
• Loss of proper coolant sealing at the housing interface

Installation Notes

Verify engine code and model-year fitment before installation. This housing uses three mounting holes and includes a gasket or seal, but mounting hardware is not included. Inspect the mating surface, replace any damaged O-rings or seals as needed, and refill and bleed the cooling system according to Mercedes-Benz service procedures after installation.

Quality Assurance

Dorman designs this thermostat housing assembly to match the fit and durability of the original housing on specified vehicles. The housing is engineered for repeated exposure to extreme temperature changes, supporting dependable cooling-system operation in Mercedes-Benz C43 AMG, GLC43 AMG, and related applications. Part number 902-5843 is built as a regular-grade replacement for direct service use.