Gates CO34879 Engine Coolant Thermostat Housing Cover

Coolant Outlet Cover for Hyundai and Kia

The Gates Coolant Outlet CO34879 is an engine coolant thermostat housing cover built for select Hyundai and Kia applications. It is designed as a direct-fit coolant outlet solution that follows original-style fitment and helps restore proper coolant routing in the cooling system.

Gates Coolant Outlet products focus on practical replacement coverage for common thermostat housing and water outlet service needs. The CO34879 is part of that line, offering a replacement coolant outlet made to match the original layout for long service life in everyday driving conditions.

Key Features

• Brand: Gates
• Brand line: Coolant Outlet
• Part number: CO34879
• Engine coolant thermostat housing cover / coolant outlet
• Plastic construction
• 3 bolt holes
• No gasket, seal, or bypass holes listed
• Outlet diameters: 1.38 in outside / 1.17 in inside, and .71 in outside / .58 in inside
• OE-style replacement for select cooling system applications

Detailed Description

The Gates CO34879 coolant outlet is intended for vehicles that use a thermostat housing cover-style outlet in the cooling circuit. It is listed for select 2010-2016 Hyundai and Kia models, including Hyundai Santa Fe Sport, Tucson, Sonata, and Santa Fe, plus Kia Sportage, Optima, Sorento, and related applications. If you are searching for a Hyundai Tucson coolant outlet cover, Kia Sportage thermostat housing cover, or a Gates CO34879 replacement for a cooling system repair, this part provides a direct replacement format that follows the original design approach.

This part cross-references Four Seasons 86028 for the same application.

Common Repair Uses

• Cracked or leaking thermostat housing cover
• Coolant seepage at the outlet connection
• Damaged plastic coolant outlet from heat cycling
• Cooling system service on a Hyundai Sonata, Kia Optima, or Kia Sorento
• Replacement of a worn coolant outlet on Hyundai Santa Fe, Tucson, or Santa Fe Sport models

Installation Notes

Verify outlet diameter, bolt-hole count, and housing style before installation. Clean the mating surfaces thoroughly and inspect the thermostat housing and connected hoses for wear, swelling, or residue before reassembly. Confirm the vehicle application by year, make, and model, especially on Hyundai and Kia platforms with multiple cooling system configurations.

Quality Assurance

Gates positions the Coolant Outlet line as a replacement solution that addresses common material and design issues seen in other aftermarket options. The CO34879 is engineered to fit and perform like the original coolant outlet while supporting long service life in the cooling system.