Dorman 902-5048 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Honda Prelude

Dorman 902-5048 is a replacement engine coolant thermostat housing for select Honda Prelude models from 1993-2001. It is built to match the stock housing’s fit and durability, with a metal construction and an integrated gasket for a direct cooling system service repair.

Key Features

• Metal thermostat housing with natural finish
• Includes gasket for sealing at installation
• Air vent (bleeder valve) included for cooling system service
• 2 mounting holes with 0.313 in. mounting hole diameter
• Outlet port diameter: 1.188 in.
• Housing neck angle: 30 degrees
• Thermostat not included

Detailed Description

This Dorman thermostat housing, part number 902-5048, is engineered for the engine coolant circuit on 1993-2001 Honda Prelude applications. The metal housing is designed to replace the original thermostat housing while maintaining the correct fit, outlet size, and mounting layout for the cooling system. The included gasket helps create a proper seal, and the bleeder valve supports air removal during coolant service. This part cross-references Motorad CH6048 for the same application.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Cracked or corroded factory housing
• Improper sealing at the cooling system connection
• Air trapped in the cooling system after service
• Fitment issues caused by a worn original housing

Installation Notes and Tips

Fits 1993-2001 Honda Prelude, engine coolant thermostat housing for cooling system. Verify the outlet port diameter, mounting hole spacing, and housing neck angle before installation. Replace the thermostat separately if needed, since it is not included with Dorman 902-5048. Clean the mating surfaces thoroughly and follow the vehicle service procedure when refilling and bleeding the cooling system.

Quality Assurance

Dorman designs this replacement housing to match the fit and durability of the original part and to withstand repeated temperature changes in normal cooling system operation. Dorman 902-5048 is built as a direct replacement for specified Honda Prelude applications.