Dorman 902-5867 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Volkswagen Cooling Systems

Dorman 902-5867 is a replacement engine coolant thermostat housing built for specified Volkswagen applications. It is made from metal and shaped to match the stock housing’s fit and durability, with a design that handles repeated temperature swings in the cooling system.

Compatible with Volkswagen Beetle, Jetta, Passat, Golf, Golf SportWagen, Beetle Cabrio, and Bora applications, this thermostat housing supports a direct-fit cooling system repair where the original housing has cracked, warped, or begun leaking. The Dorman 902-5867 housing includes an O-ring and uses a two-bolt mounting pattern for a secure installation.

Key Features

• Metal thermostat housing with a natural finish
• Engine coolant thermostat housing for Volkswagen cooling system service
• Outlet port diameter: 1.35 in.
• Housing neck angle: 20 degrees
• Two mounting holes with 2.7 in. bolt hole center spacing
• Flange thickness: 0.32 in.
• O-ring included; thermostat, bolts, and gasket or seal are not included
• Air vent (bleeder valve): No

Detailed Description

This Dorman thermostat housing is engineered as a replacement for the original coolant housing on select Volkswagen models, including the Beetle, Jetta, Passat, and Golf. The metal construction is selected for durability in high-heat cooling system environments, while the housing geometry is designed to align with the factory mounting points and outlet configuration. Part number 902-5867 is also referenced by Four Seasons 86003 and Motorad CH3003 for the same application.

Use Dorman 902-5867 when servicing a leaking or damaged thermostat housing on a Volkswagen Beetle, Jetta, Passat, Golf, Golf SportWagen, Beetle Cabrio, or Bora. The housing is supplied without a thermostat and without bolts, so it is suited for repairs where those components are being reused or sourced separately.

What This Part Helps Fix

• Coolant leaks at the thermostat housing
• Cracked or warped housing surfaces
• Improper sealing at the coolant outlet
• Cooling system service issues caused by a damaged housing neck
• Fitment problems from a worn original thermostat housing

Installation Notes and Tips

Verify engine code and vehicle fitment before installation. Clean the mating surfaces thoroughly and inspect the O-ring groove, flange, and coolant passages for residue or damage. Because the thermostat, gasket or seal, and bolts are not included, confirm that all required service parts are on hand before beginning the repair. Refill and bleed the cooling system according to Volkswagen service procedures after installation.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the stock part on specified vehicles and to withstand extreme temperature changes for extended service life. It is built for direct replacement use in Volkswagen cooling system repairs.