HomeBelts and Cooling > Thermostat and HousingFour Seasons 86148 Engine Coolant Thermostat Housing
Part #: 86148

Four Seasons 86148 Engine Coolant Thermostat Housing

Thermostat Housing
⚙️ 32 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Thermostat Housing
🚗Fitment: Audi, Q5, A6, A5, A5 Quattro, A4 Quattro, A6 Quattro, and A4
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Reliable Engine Coolant Thermostat Housing for Audi Models

The Four Seasons Thermostat Housing 86148 is designed to provide precise temperature regulation for your Audi A4, A5, A6, and Q5 models. This integrated thermostat housing ensures efficient engine cooling and helps maintain optimal engine performance.

  • Constructed from durable plastic material for corrosion resistance
  • Includes gasket and seal for a secure, leak-free installation
  • Integrated thermostat included for streamlined replacement
  • Flange thickness of 0.5625 inches for proper fitment
  • Bolt hole center-to-center distance of 2.15 inches
  • Inlet port diameter of 1.005 inches
  • Overall height of 4.181 inches
  • Meets or exceeds OEM specifications

About the Four Seasons Thermostat Housing Product Line

The Four Seasons Thermostat Housing line focuses on engine coolant components designed to meet or exceed original equipment manufacturer standards. This product line integrates the thermostat within the housing, simplifying installation and reducing the number of parts needed. The 86148 model is part of this line, offering a reliable replacement solution for various Audi vehicles.

Detailed Product Description

The Four Seasons 86148 thermostat housing is engineered with an integrated thermostat to regulate coolant flow effectively. Made from high-quality plastic, it resists corrosion and withstands engine heat cycles. The included gasket and seal ensure a tight fit, preventing coolant leaks. Its precise dimensions, including a 2.15-inch bolt hole spacing and a 1.005-inch inlet port diameter, guarantee compatibility with Audi A4, A4 Quattro, A5, A5 Quattro, A6, A6 Quattro, and Q5 models. The flange thickness and overall height are designed to match OEM specifications, ensuring a seamless fit and reliable operation.

Common Issues Addressed by This Thermostat Housing

  • Engine overheating due to thermostat failure
  • Coolant leaks from damaged or worn housing
  • Inconsistent engine temperature regulation
  • Corrosion-related housing degradation
  • Replacement of faulty integrated thermostat units

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation
  • Replace the gasket and seal included with the housing to prevent leaks
  • Verify bolt hole alignment using the 2.15-inch center-to-center measurement
  • Check coolant levels and refill as necessary after installation
  • Follow vehicle-specific torque specifications for mounting bolts

Quality Assurance and Warranty

The Four Seasons Thermostat Housing 86148 meets or exceeds OEM standards, providing reliable performance and durability. This part includes a gasket and integrated thermostat to ensure a complete and secure replacement. Four Seasons products typically come with a limited warranty covering defects in materials and workmanship; please refer to the manufacturer’s warranty details for specific terms.

BrandFour Seasons
Part Number86148
PositionThermostat Housing
Bolt Hole Center To Bolt Hole Center2.15
DescriptionEngine Coolant Components
Flange Thickness0.5625
Gasket Or Seal IncludedIncluded
Inlet Port Diameter1.005
MaterialPlastic
Meets / Exceeds OEM?Yes
Overall Height IN4.181
Stylew/ Thermostat
Thermostat Included?Included
TypeIntegrated Thermostat Housing

This part fits 32 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2012AudiQ53.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2011AudiA6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2011AudiQ53.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2010AudiA5N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2010AudiA5 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2010AudiA63.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2010AudiQ53.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA4 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA4 QuattroSedan3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA4 QuattroConvertible3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA5N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA5 QuattroN/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA63.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiA6 QuattroN/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2009AudiQ5N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA43.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA4 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA5N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA5 QuattroN/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA63.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2008AudiA6 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2007AudiA43.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2007AudiA4 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2007AudiA6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2007AudiA6 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2006AudiA43.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2006AudiA4 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2006AudiA63.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2006AudiA6 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2005AudiA43.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2005AudiA4 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing
2005AudiA6 Quattro3.2LV6N/AThermostat included in Engine Coolant Thermostat/Water Outlet Assembly Kit.; Thermostat Housing

* 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:

06E121111D06E121111G06E121111M06E212111D4947950619281597886148902718KGT506192TW98678

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