Dorman 902-2058 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Isuzu and Chevrolet

Dorman 902-2058 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It uses a metal construction with a natural finish and is designed to handle repeated temperature swings in the cooling system.

Compatible with select Isuzu Pickup, Isuzu I-Mark, Isuzu Trooper, and Chevrolet LUV applications, this thermostat housing includes a gasket for a direct cooling system service. The 902-2058 housing is a practical OE-style replacement for drivers servicing aging cooling components on these platforms.

Key Features

• Metal thermostat housing for cooling system service
• Natural finish
• Outlet port diameter: 1.25 in.
• Gasket or seal included
• 2 mounting holes with 0.313 in. mounting hole diameter
• 180-degree housing neck angle
• No bleeder valve
• Thermostat not included
• Package contents: thermostat housing with gasket

Detailed Description

This engine coolant thermostat housing is engineered as a direct replacement for the stock housing used on 1975-1982 Chevrolet LUV, 1981-1987 Isuzu Pickup, 1981-1985 Isuzu I-Mark, and 1984-1985 Isuzu Trooper models. Dorman 902-2058 is built from metal to support long-term cooling system use and to withstand extreme temperature changes that can shorten the life of lesser housings. The 1.25-inch outlet port, 180-degree neck angle, and two-bolt mounting layout help it match the original service configuration on the listed vehicles.

This part cross-references Motorad CH3058 and Valeo 814897 for the same application.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Warped or corroded housing surfaces
• Cracked housing necks from heat cycling
• Improper sealing at the cooling system connection
• Cooling system service issues on older Isuzu and Chevrolet applications

Installation Notes and Tips

Verify the outlet port diameter, mounting hole spacing, and neck angle against the original housing before installation. Clean the mating surfaces thoroughly and inspect the thermostat, hoses, and related seals while the cooling system is open. This housing is supplied with a gasket; bolts are not included.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the stock part on the listed vehicles. The metal construction is selected to support service life in high-temperature cooling system environments.