Dorman 902-5220 Engine Coolant Thermostat Housing - Upper

Engine Coolant Thermostat Housing for Toyota

This Dorman engine coolant thermostat housing is a direct replacement for select Toyota cooling system applications. Built from aluminum with a natural finish, it is shaped to match the stock housing on specified vehicles and handle repeated temperature swings in daily driving.

Compatible with Toyota Paseo and Toyota Tercel upper cooling system applications, Dorman 902-5220 supports a precise thermostat housing replacement where the original housing has cracked, warped, or corroded.

Key Features

• Aluminum construction for strength and heat resistance
• Natural finish
• Upper thermostat housing design
• 2 mounting holes with 2.63 in. bolt hole center spacing
• Inlet port diameter: 2.05 in.
• Outlet port diameter: 1.16 in.
• 180-degree housing neck angle
• Thermostat, gasket/seal, O-rings, bolts, and bleeder valve not included

Detailed Description

Dorman 902-5220 is engineered as a replacement engine coolant thermostat housing for select Toyota models, including the 1989-1998 Toyota Tercel and 1992-1998 Toyota Paseo, plus 1999 manual-transmission upper applications for both models. The aluminum housing is designed to match the fit and durability of the original part while standing up to extreme temperature changes in the cooling system. This part cross-references Focus Auto Parts 86155 and 1632110011 for the same application.

What It Helps Fix

• Coolant leaks from a cracked or corroded thermostat housing
• Warped sealing surfaces that prevent a proper seal
• Overheating caused by housing damage in the cooling circuit
• Coolant loss around the upper thermostat outlet
• Fitment issues from a worn OE-style housing on Toyota Paseo or Toyota Tercel

Installation Notes and Tips

Verify upper-position fitment before installation and compare the inlet and outlet port sizes to the original housing. Transfer or replace the thermostat, gasket, and seals as needed, since they are not included. Clean the mating surfaces thoroughly and inspect the cooling system for corrosion or residue before reassembly.

Quality Assurance

Dorman designs replacement cooling components to match stock fit and service requirements on specified vehicles. Part number 902-5220 is built for Toyota cooling system applications where a durable OE-style thermostat housing is needed.