HomeBelts and Cooling > Thermostat and HousingGates 34721 Engine Coolant Thermostat
Part #: 34721

Gates 34721 Engine Coolant Thermostat

Integrated Housing Thermostat
⚙️ 30 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Integrated Housing Thermostat
🚗Fitment: Audi, Q5, A6, A5, A5 Quattro, A4 Quattro, A6 Quattro, and A4
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Overview of Gates Integrated Housing Thermostat 34721

The Gates Integrated Housing Thermostat 34721 is designed for precise engine temperature regulation in select Audi models. This engine coolant thermostat ensures optimal performance by maintaining the correct coolant flow and temperature, helping to protect your engine from overheating or inefficient operation.

  • Integrated housing thermostat design for streamlined installation
  • Start to open temperature at 190°F (88°C) for accurate thermal control
  • Outlet outside diameter of 0.982 inches and inside diameter of 0.802 inches
  • Seven bolt holes for secure mounting
  • Single seal included for leak prevention
  • Non-electric, mechanical operation without jiggle pin or check valve

Detailed Product Description

The Gates Integrated Housing Thermostat 34721 is engineered to meet OE performance standards, providing reliable temperature regulation for your engine cooling system. This thermostat features an integrated housing design, which simplifies installation and reduces the number of components needed. With a start to open temperature of 190°F (88°C), it ensures your Audi A4, A5, A6, or Q5 models maintain optimal engine temperature under various driving conditions. The thermostat’s outlet dimensions—0.982 inches outside diameter and 0.802 inches inside diameter—are designed to fit precisely within the cooling system, supported by seven bolt holes for a secure and stable fit. This part does not include a jiggle pin or check valve, relying on its mechanical operation to regulate coolant flow effectively.

About the Integrated Housing Thermostat Product Line

The Gates Integrated Housing Thermostat line combines the thermostat and housing into a single unit, reducing installation complexity and potential leak points. This design is particularly suited for vehicles requiring precise coolant flow management and durability. The 34721 part number represents a thermostat engineered specifically for certain Audi models, ensuring compatibility and performance aligned with manufacturer specifications.

Compatible Vehicles and Common Applications

  • Compatible with Audi A4 and A4 Quattro models
  • Fits Audi A5 and A5 Quattro vehicles
  • Suitable for Audi A6 and A6 Quattro series
  • Designed for Audi Q5 models
  • Used to regulate engine temperature and prevent overheating

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation to avoid burns
  • Verify the gasket or seal is properly seated to prevent coolant leaks
  • Use the seven bolt holes to securely fasten the thermostat housing
  • Check coolant levels and system pressure after installation
  • Follow vehicle-specific service manual instructions for torque specifications

Quality Assurance and Warranty

The Gates Integrated Housing Thermostat 34721 is manufactured to meet OE performance standards, ensuring reliable operation and durability. While this part is not an exact OE replacement, it is designed to provide comparable performance. Gates products typically come with a limited warranty covering defects in materials and workmanship; please refer to the product documentation for specific warranty details.

BrandGates
Part Number34721
PositionIntegrated Housing Thermostat
1
Bolt Hole Quantity7
Check ValveNo
ElectricNo
ElectricNo
Jiggle Pin Weep HoleNo
Jiggle Pin/Check ValveNo
Number of Bolt Holes7
Number of Jiggle Pins/Check Valves0
Number of Seals1
OE Comparison RatingOE Performance
OE ExactNo
Outlet Inside Diameter.802
Outlet Inside Diameter 1 (in).802
Outlet Outside Diameter.982
Outlet Outside Diameter 1 (in).982
Start to Open Temperature88
Start to Open Temperature190
Temperature (C)88
TypeIntegrated Housing Thermostat

This part fits 30 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2012AudiQ53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2011AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2011AudiQ53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2010AudiA53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2010AudiA5 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2010AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2010AudiQ53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiA4 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiA53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiA5 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiA6 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2009AudiQ53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA43.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA4 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA53.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA5 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2008AudiA6 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2007AudiA43.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2007AudiA4 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2007AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2007AudiA6 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2006AudiA43.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2006AudiA4 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2006AudiA63.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2006AudiA6 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2005AudiA43.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2005AudiA4 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat
2005AudiA6 Quattro3.2LV6GASN/A192 Degree; OE Temperature; Seal included; Integrated Housing Thermostat

* 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:

06E121111D06E121111G06E121111M3472149479506-19286148HT192-605TI30588

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