Dorman 902-5197 Engine Coolant Thermostat Housing - Water Pump

Dorman 902-5197 Thermostat Housing

Dorman 902-5197 is a replacement engine coolant thermostat housing for select Volkswagen cooling system applications. It is built from black plastic and engineered to match the fit and durability of the original housing while handling repeated temperature swings in daily driving.

Compatible With 2013-2018 Volkswagen Jetta, Beetle, and Passat water pump applications, this thermostat housing supports proper coolant routing in the engine cooling system. The Dorman 902-5197 thermostat housing is supplied with bolts and is shaped for direct replacement service on the listed vehicles.

Key Features

• Replacement engine coolant thermostat housing for the cooling system
• Black plastic construction for OE-style fit and function
• Designed to withstand extreme temperature changes for longer service life
• Outlet port diameter: 1.75 in.; inlet port diameter: 1.02 in.
• Two mounting holes with 2.57 in. bolt-hole center spacing
• Bolts included; thermostat, gasket/seal, O-rings, and bleeder valve not included
• Cross-references Four Seasons 86037 and Motorad CH7037 for the same application

Detailed Description

This Dorman thermostat housing is a direct replacement for the stock engine coolant thermostat housing used on select Volkswagen models. It is designed around the original housing dimensions, including a 3.21 in. height, 0.46 in. flange thickness, and 0.41 in. mounting hole diameter, helping maintain proper alignment at the water pump connection. The housing is intended for Volkswagen Jetta, Volkswagen Beetle, and Volkswagen Passat cooling system service where the thermostat housing mounts at the water pump.

Part number 902-5197 is a practical choice when the original housing is cracked, warped, or no longer sealing correctly. Its plastic construction and OE-style layout support consistent coolant flow and a secure fit on the specified Volkswagen applications. If you are searching for a Volkswagen Jetta thermostat housing, Volkswagen Beetle coolant thermostat housing, or Volkswagen Passat water pump thermostat housing, this part number is built for those exact vehicle listings.

What It Helps Address

• Coolant leaks from a cracked or damaged thermostat housing
• Warped housing surfaces that prevent proper sealing
• Overheating caused by restricted coolant routing at the housing
• Cooling system service needs on water pump-mounted thermostat housing applications
• Fitment issues from worn original plastic housing components

Installation Notes

Verify the vehicle year, model, and water pump application before installation. Transfer or replace the thermostat and sealing components as required by the service procedure, since the housing does not include a thermostat, gasket, seal, or O-rings. Clean the mating surfaces thoroughly and inspect the coolant passages and mounting points before tightening the included bolts to specification.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the original part on the listed vehicles. It is engineered to handle repeated temperature changes common in engine cooling systems and is backed by Dorman replacement-part manufacturing standards.