Gates CO35081 Engine Coolant Water Outlet

Gates Coolant Outlet for Mazda Cooling Repair

The Gates Coolant Outlet CO35081 is an engine coolant water outlet built for direct replacement service on select Mazda applications. It is a plastic thermostat cover designed to match original fit and function while addressing common aftermarket material and design concerns.

Compatible with 2017-2023 Mazda CX-9, 2021 Mazda 3, 2021 Mazda 3 Sport, and 2018-2021 Mazda 6, this coolant outlet supports a clean, OE-style repair for the cooling system. The CO35081 is part of the Gates Coolant Outlet line, which covers water outlets through complete thermostat housing assemblies for application-specific service work.

Key Features

• Brand: Gates
• Part number: CO35081
• Part type: Engine coolant water outlet
• Type: Thermostat cover
• Material: Plastic
• Outlet outside diameter: 1.3
• Outlet inside diameter: 1.15
• Bolt hole quantity: 2
• Contents: Thermostat cover

Product Details

Gates coolant outlets are engineered as direct-fit replacement components for cooling system service. The CO35081 follows the original-style layout for the thermostat cover and is built to address fit, manufacturing, and material issues commonly seen in other aftermarket options. For Mazda CX-9, Mazda 3, Mazda 3 Sport, and Mazda 6 cooling repairs, this part number provides a focused replacement for the coolant outlet assembly.

This part cross-references PY8W15172 for the same application.

Common Repair Uses

• Replacing a cracked or leaking thermostat cover
• Restoring coolant outlet sealing at the housing connection
• Repairing a damaged plastic coolant outlet on the engine
• Addressing coolant loss from a worn thermostat housing area
• Correcting fitment issues from an incorrect aftermarket outlet

Installation Notes

Verify the outlet diameter, bolt-hole layout, and vehicle application before installation. Clean the mating surfaces thoroughly and inspect the surrounding cooling system components for wear, residue, or damage before reassembly. Use the vehicle’s service procedure for coolant refill and bleeding after replacement.

Quality Assurance

Gates positions this coolant outlet line as an OE-style replacement program with application-specific coverage and long service life in mind. The CO35081 is built to fit and perform like the original component for the listed Mazda applications.