Gates CO34907 Engine Coolant Thermostat Housing Cover

Gates Coolant Outlet Cover for OE-Style Cooling Repair

The Gates CO34907 is an engine coolant thermostat housing cover built for direct-fit cooling system service on select Isuzu, Honda, and Acura applications. It is made from stamped steel and follows OE exact dimensions for a precise replacement on vehicles that use this coolant outlet design.

Gates Coolant Outlet components are engineered as a practical OE-style solution for common aftermarket fit and material concerns. The Coolant Outlet line covers everything from water outlets to complete thermostat housing assemblies, giving technicians a direct replacement option that matches original fit and performance expectations.

Key Features

• Stamped steel construction for durable cooling system service
• OE exact design for direct replacement fit
• Thermostat cover style coolant outlet
• Outlet inside diameter: 1.4 in.
• Outlet outside diameter: 1.51 in.
• 4 bolt holes for OE-style mounting
• No gasket, seal, or bypass holes included in the design
• Gates CO34907 part number for easy catalog matching

Detailed Description

The Gates CO34907 coolant outlet is designed for vehicles that use an engine coolant thermostat housing cover with a stamped steel OE-style profile. It is a direct replacement for cooling system service on 1998-2004 Isuzu Rodeo, 2002-2003 Isuzu Axiom, 2001-2003 Isuzu Rodeo Sport, 1998-2002 Honda Passport, 1998-2002 Isuzu Trooper, 1999-2001 Isuzu VehiCROSS, 1998-2000 Isuzu Amigo, and 1998-1999 Acura SLX. The CO34907 follows original equipment dimensions to support proper sealing and fit at the thermostat housing area.

This part cross-references Dorman - OE Solutions 902-5830 for the same application.

Common Problems This Part Can Address

• Cracked or corroded thermostat housing cover
• Coolant leakage at the outlet or housing interface
• Warped or damaged OE-style coolant outlet surface
• Fitment issues caused by mismatched aftermarket housing covers
• Cooling system service on vehicles with a 4-bolt thermostat cover design

Installation Notes and Tips

• Verify the outlet diameter and bolt-hole pattern against the original part before installation.
• Inspect the mating surface, thermostat housing, and related cooling components for corrosion or damage.
• Use the correct gasket or sealing components required by the vehicle application, since this cover is listed with zero gaskets and zero seals.
• Confirm the vehicle application by year, make, and model before ordering.

Quality Assurance

Gates positions this Coolant Outlet line as an OE-style replacement program focused on fit, performance, and long service life. The CO34907 is built to match original design requirements for select Honda Passport, Isuzu Rodeo, and related applications.