Gates CO35004 Engine Coolant Hose Flange

Coolant Outlet Flange for GM Applications

Gates CO35004 is an engine coolant hose flange built for direct replacement in select Chevrolet, GMC, and Buick applications. It combines a plastic housing with an integrated seal and temperature sensor porting to support a clean, OE-style coolant connection.

Gates Coolant Outlet components are engineered to address common aftermarket fit and material concerns while maintaining original-style function and long service life. This coolant outlet flange is a practical choice for drivers servicing a Chevrolet Equinox, GMC Terrain, or Chevrolet Malibu cooling system.

Key Features

• Part number: CO35004
• Engine coolant hose flange design
• Plastic construction
• Integrated seal design
• Temperature sensor provision
• Two-bolt mounting pattern
• OE-style replacement for select GM cooling systems

Product Details

This Gates coolant outlet is designed to match original fit and function for vehicles including the Chevrolet Equinox, Chevrolet Malibu, GMC Terrain, Buick Encore, Chevrolet Cruze, Chevrolet Spark, and Chevrolet Trax. The flange uses multiple hose outlet diameters and inlet diameters to match the factory cooling circuit layout, helping restore a secure coolant connection at the engine.

Gates Coolant Outlet is a product line focused on water outlets, coolant outlets, and thermostat housing assemblies for repair work that calls for a direct-fit cooling system component. Part number CO35004 is cross-referenced to GM OE numbers 12638710 and 12672523 for the same application.

What It Helps Repair

• Coolant leaks at the hose flange or outlet connection
• Cracked or heat-aged plastic coolant outlet housings
• Failed integrated seal at the coolant outlet
• Cooling system service issues on GM small-car and crossover applications
• Temperature sensor mounting concerns at the outlet assembly

Installation Notes

Verify the vehicle year, make, model, and engine configuration against the listed fitment before installation. Inspect the mating surfaces, hose condition, and sensor interface for wear or contamination before reassembly. This part is listed for 2025-2024 Chevrolet Equinox, 2025-2024 Chevrolet Malibu, 2025-2024 GMC Terrain, 2022 Chevrolet Equinox, 2022 GMC Terrain, 2022-2021 Buick Encore, 2022-2016 Chevrolet Malibu, 2022-2019 Chevrolet Spark, 2022-2021 Chevrolet Trax, 2021-2018 Chevrolet Equinox, 2021-2018 GMC Terrain, 2019-2016 Buick Encore, 2019-2016 Chevrolet Cruze, and 2016 Chevrolet Cruze NG.

Quality Assurance

Gates designs this coolant outlet to perform like the original component and provide long service life in everyday cooling system use. The part is built as a direct replacement solution for select GM vehicles, including Chevrolet Equinox and GMC Terrain applications, with OE-style fitment and integrated sealing features.