HomeBelts and Cooling > Thermostat and HousingGates CO34877 Engine Coolant Water Outlet
Part #: CO34877

Gates CO34877 Engine Coolant Water Outlet

Coolant Outlet
⚙️ 27 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Coolant Outlet
🚗Fitment: Audi and Volkswagen, A3 Quattro, Eos, EuroVan, Golf, Jetta, R32, and TT Quattro
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Overview of Gates Coolant Outlet CO34877

The Gates Coolant Outlet CO34877 is a precision-engineered engine coolant water outlet designed for select Audi and Volkswagen models. Manufactured from durable plastic, this thermostat housing ensures reliable coolant flow and temperature regulation for your vehicle's engine cooling system.

  • Constructed from high-quality plastic material for corrosion resistance
  • Exact OE replacement with 8 bolt holes for secure mounting
  • Includes one seal for proper sealing and leak prevention
  • Multiple outlet inside diameters (1.088", 1.11", 1.269", 1.665") and outside diameters (1.3", 1.514", 1.984") for precise fitment
  • Compatible with Audi and Volkswagen models including A3 Quattro, Eos, EuroVan, Golf, Jetta, R32, and TT Quattro

Product Line: Gates Coolant Outlet

The Gates Coolant Outlet product line focuses on delivering reliable thermostat housings and coolant outlets that meet exact OE specifications. This ensures proper coolant circulation and temperature control within the engine cooling system. The CO34877 part is part of this line, providing a direct replacement solution engineered to maintain optimal engine performance and prevent overheating.

Detailed Product Description

The CO34877 engine coolant water outlet is designed with multiple outlet diameters to accommodate specific coolant hose connections, ensuring a precise fit. The plastic construction offers resistance to corrosion and heat, which is critical for maintaining the integrity of the cooling system. Featuring 8 bolt holes, this thermostat housing mounts securely to the engine block, minimizing the risk of leaks. The included seal helps maintain a tight connection between the outlet and the engine, preventing coolant loss. This part is an exact OE replacement, making it suitable for maintaining factory performance and reliability in your Audi or Volkswagen vehicle.

Common Applications and Issues Addressed

  • Replacement of cracked or damaged thermostat housing
  • Resolving coolant leaks around the outlet area
  • Preventing engine overheating due to faulty coolant flow
  • Maintaining proper coolant circulation in Audi A3 Quattro and Volkswagen Golf models
  • Ensuring secure coolant outlet connections in Volkswagen Jetta and TT Quattro vehicles

Installation Notes and Tips

When installing the Gates Coolant Outlet CO34877, ensure the mating surfaces are clean and free of old gasket material. Use the included seal to prevent leaks, but note that no additional gaskets are included. Tighten the 8 bolts evenly in a crisscross pattern to the manufacturer’s torque specifications to avoid warping the housing. Verify all coolant hoses match the outlet diameters for a proper fit. It is recommended to inspect the cooling system for any other worn components during installation.

Quality Assurance and Warranty

The Gates Coolant Outlet CO34877 is manufactured to meet or exceed original equipment standards, ensuring durability and reliable performance. This part is an exact OE replacement, providing confidence in fit and function. While specific warranty details are not provided here, Gates products typically come with a limited warranty against defects in material and workmanship. Consult the product packaging or manufacturer for exact warranty terms.

BrandGates
Part NumberCO34877
PositionCoolant Outlet
MaterialPlastic
Outlet Outside Diameter1.3
Outlet Outside Diameter1.514
Outlet Outside Diameter1.984
Bolt Hole Quantity8
TypeThermostat housing
Gasket Quantity0
Outlet Inside Diameter1.088
Outlet Inside Diameter1.11
Outlet Inside Diameter1.269
Outlet Inside Diameter1.665
98411
9848No
By-Pass HolesNo
ContentsCoolant outlet, seal
Number of Bolt Holes8
Number of Gaskets0
Number of Seals1
OE ExactYes
Outlet Inside Diameter 1 (in)1.269
Outlet Inside Diameter 2 (in)1.088
Outlet Inside Diameter 3 (in)1.11
Outlet Inside Diameter 4 (in)1.665
Outlet Outside Diameter 1 (in)1.514
Outlet Outside Diameter 2 (in)1.3
Outlet Outside Diameter 3 (in)1.3
Outlet Outside Diameter 4 (in)1.984
TypeCoolant outlet

This part fits 27 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009AudiA3 Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2008AudiA3 Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2008VolkswagenEos3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2008VolkswagenR323.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2007AudiA3 Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2007VolkswagenEos3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2006AudiA3 Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2006AudiTT Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2005AudiTT Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2005VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2004AudiTT Quattro3.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2004VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2004VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2004VolkswagenR323.2LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2003VolkswagenEuroVan2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2003VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2003VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2002VolkswagenEuroVan2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2002VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2002VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2001VolkswagenEuroVan2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2001VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2001VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2000VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
2000VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
1999VolkswagenGolf2.8LV6GASN/AThermostat Housing; Seal included; Coolant Outlet
1999VolkswagenJetta2.8LV6GASN/AThermostat Housing; Seal included; 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:

021121117B022121117C81574085922902-920TA9920

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