Gates CO34880 Engine Coolant Hose Flange

Coolant Outlet for Ford, Mazda, Mercury and Lincoln

The Gates Coolant Outlet CO34880 is an engine coolant hose flange built for direct replacement in select Ford, Mazda, Mercury, and Lincoln applications. It is made from plastic and includes a temperature sensor and seal for a service-ready cooling system repair.

Gates Coolant Outlet parts are engineered as OE-style replacements with broad line coverage, giving technicians and DIY buyers a practical option for replacing worn coolant outlets and thermostat housing-related components. This CO34880 coolant outlet is designed to match original fit and function while supporting long service life.

• Plastic coolant outlet / coolant hose flange construction
• Outlet outside diameter: 1.25 in.
• Outlet inside diameters: 1.04 in. and 0.87 in.
• 2-bolt flange design
• Includes coolant outlet, temperature sensor, and seal
• OE-style replacement for cooling system service

Detailed Product Overview

Gates CO34880 is a coolant outlet assembly used in cooling system repairs where the original hose flange has cracked, warped, or begun leaking. It is listed for 2002-2006 Mazda MPV, 2003-2005 Ford Taurus, 2003-2005 Mercury Sable, 2003-2008 Mazda 6, 2004 Ford Escape, 2005-2008 Mercury Mariner, 2005-2008 Ford Escape, 2005-2006 Mazda Tribute, 2006 Ford Fusion, 2006 Lincoln Zephyr, 2006-2009 Ford Fusion, 2006-2009 Mercury Milan, and 2008 Mazda Tribute. This part number, CO34880, is also cross-referenced to Dorman OE Solutions 902-031 for the same application.

Common Repair Uses

• Replacing a leaking coolant hose flange
• Repairing cracked plastic coolant outlet housings
• Restoring proper coolant routing at the thermostat housing area
• Addressing coolant loss from a damaged outlet seal
• Correcting temperature sensor service issues tied to the outlet assembly

Installation Notes and Tips

Verify the outlet diameters, bolt-hole count, and vehicle application before installation. This part is listed with 2 bolt holes, no gasket, and one seal, and the fitment notes specify seal included on applicable vehicles. For 2004 Ford Escape applications, the listing applies to Dec. 22, 2003 and newer vehicles. Confirm the cooling system is fully drained and the mating surfaces are clean before assembly.

Quality Assurance

Gates designs its Coolant Outlet line to address common material and design issues found in many aftermarket alternatives. The CO34880 is built as an OE-style replacement for select Ford, Mazda, Mercury, and Lincoln vehicles, with fit and performance intended to follow the original component layout.