Gates CO35091 Radiator Coolant Hose Flange

Gates CO35091 Coolant Outlet for Toyota Highlander

The Gates CO35091 coolant outlet is a plastic coolant filler neck built for OE-style fit and function. It is engineered for 2020-2021 Toyota Highlander applications, including the 2020 Toyota Highlander with oil cooler and the 2021 Toyota Highlander coolant outlet application.

Key Features

• Brand: Gates Coolant Outlet line
• Part number: CO35091
• Type: Coolant filler neck / radiator coolant hose flange
• Material: Plastic
• Outlet outside diameter: 1.3 in.
• Outlet inside diameter: 1 in.
• Designed to match original fit and performance requirements
• Built for long service life in cooling system service

Product Details

Gates Coolant Outlet components are part of the Gates Coolant Outlet product line, which covers water outlets through complete thermostat housing assemblies. This CO35091 coolant outlet is made to address common aftermarket fit, material, and manufacturing concerns while maintaining the dimensions needed for proper coolant routing. For Toyota Highlander owners searching for a radiator coolant hose flange or coolant filler neck replacement, CO35091 provides a direct OE-style solution.

This part cross-references Toyota 168970P010 for the same application.

What It Helps Fix

• Cracked or leaking coolant filler neck housing
• Coolant seepage at the outlet connection point
• Improper hose sealing at the radiator coolant outlet
• Cooling system service issues caused by worn plastic outlet components
• Fitment problems from mismatched aftermarket replacement parts

Installation Notes and Tips

Verify the outlet diameter, hose connection points, and vehicle configuration before installation. This CO35091 is listed for 2020 Toyota Highlander, N/A, W/Oil Cooler; Coolant Outlet, and 2021 Toyota Highlander, N/A, Coolant Outlet. Confirm the original part style and cooling system layout on the vehicle before replacing the outlet.

Quality Assurance

Gates positions this coolant outlet line as an OE-style replacement program with full line coverage for cooling system service. The CO35091 is designed to fit and perform like the original component while supporting long service life in normal cooling system operation.