HomeBelts and Cooling > Thermostat and HousingGates CO34816 Engine Coolant Thermostat Housing Cover
Part #: CO34816

Gates CO34816 Engine Coolant Thermostat Housing Cover

Coolant Outlet
⚙️ 10 vehicles fit this part
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Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Coolant Outlet
🚗Fitment: Volkswagen, Golf and Jetta
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Gates Coolant Outlet CO34816

The Gates Coolant Outlet CO34816 is a precision-engineered engine coolant thermostat housing cover designed specifically for Volkswagen Golf and Jetta models. Manufactured from durable plastic, this thermostat cover ensures reliable coolant flow and system integrity.

  • Material: High-quality plastic construction
  • Outlet Outside Diameter: 1.255 inches
  • Outlet Inside Diameter: 1.06 inches
  • Bolt Hole Quantity: 3 for secure mounting
  • Includes 1 seal, no gaskets included
  • OE exact fit for Volkswagen Golf and Jetta
  • Type: Thermostat cover within the Coolant Outlet product line
  • No by-pass holes

About the Gates Coolant Outlet Product Line

The Coolant Outlet line by Gates focuses on components that manage engine coolant flow, including thermostat housings and covers. This product line is engineered to meet original equipment specifications, providing reliable sealing and fitment. The CO34816 thermostat housing cover is part of this line, designed to maintain proper coolant circulation and temperature regulation in Volkswagen vehicles.

Detailed Product Description

The Gates CO34816 engine coolant thermostat housing cover is constructed from durable plastic to resist corrosion and withstand engine heat cycles. It features an outlet outside diameter of 1.255 inches and an inside diameter of 1.06 inches, ensuring compatibility with the cooling system hoses on Volkswagen Golf and Jetta models. The cover mounts securely with three bolt holes and includes one seal to prevent coolant leaks. This thermostat cover does not have by-pass holes, aligning with the original equipment design for precise coolant routing.

Common Applications and Problem Solving

  • Replacement of cracked or damaged thermostat housing covers
  • Resolving coolant leaks around the thermostat outlet
  • Maintaining proper coolant flow and engine temperature regulation
  • Preventing overheating issues caused by faulty thermostat covers
  • Ensuring OEM fit and function for Volkswagen Golf and Jetta cooling systems

Installation Notes and Tips

When installing the Gates CO34816 thermostat housing cover, ensure the mating surfaces are clean and free of old sealant or debris. Use the included seal to achieve a proper seal and prevent leaks. Tighten the three bolts evenly to the manufacturer’s torque specifications to avoid warping the plastic cover. This part is designed for direct replacement on Volkswagen Golf and Jetta models, making installation straightforward for professional technicians.

Quality Assurance and Warranty

The Gates Coolant Outlet CO34816 thermostat housing cover is manufactured to meet original equipment standards, ensuring exact fit and reliable performance. This part is an OE exact replacement, providing confidence in durability and compatibility. While specific warranty details are not provided, Gates products typically adhere to stringent quality control processes to support long-term vehicle operation.

BrandGates
Part NumberCO34816
PositionCoolant Outlet
MaterialPlastic
Outlet Outside Diameter1.255
Bolt Hole Quantity3
TypeThermostat cover
Gasket Quantity0
Outlet Inside Diameter1.06
98411
9848No
By-Pass HolesNo
ContentsCoolant outlet, seal
Number of Bolt Holes3
Number of Gaskets0
Number of Seals1
OE ExactYes
Outlet Inside Diameter 1 (in)1.06
Outlet Outside Diameter 1 (in)1.255
TypeCoolant outlet

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2005VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2004VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2003VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2002VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2002VolkswagenJetta2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2001VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2001VolkswagenJetta2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2000VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
2000VolkswagenJetta2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet
1999VolkswagenGolf2.8LV6GASN/AThermostat housing cover with included seal.; Coolant Outlet

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

021121121C81572085163902-911CH9911

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.