Four Seasons 86131 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Audi and Volkswagen

The Four Seasons 86131 Thermostat Housing is designed to provide a durable and precise fit for select Audi and Volkswagen models. Engineered from high-quality plastic, this thermostat housing ensures proper coolant flow and engine temperature regulation without including the thermostat itself.

Key Features of Four Seasons 86131 Thermostat Housing

• Constructed from durable plastic material for corrosion resistance
• Compatible with Audi and Volkswagen models including 90, 90 Quattro, A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, Cabriolet, Passat, and S4
• Bolt hole center-to-center measurement of 3.21 inches for accurate mounting
• Inlet port diameter of 1.25 inches to match OEM specifications
• Flange thickness of 0.52 inches ensuring a secure seal (gasket not included)
• Overall height of 3.55 inches designed for proper fitment
• Meets or exceeds OEM standards for quality and performance
• Style without thermostat included, allowing for custom thermostat installation

Detailed Description of the Thermostat Housing

This Four Seasons Thermostat Housing (part number 86131) is a critical engine coolant component that helps maintain optimal engine temperature by housing the thermostat and directing coolant flow. Made from plastic, it offers resistance to corrosion and heat, contributing to the longevity of the cooling system. The housing is designed without a thermostat, giving flexibility for replacement or upgrade of the thermostat unit separately. Its precise dimensions, including a 3.21-inch bolt hole center spacing and a 1.25-inch inlet port diameter, ensure compatibility with specific Audi and Volkswagen models such as the A4 Quattro and Passat. The flange thickness of 0.52 inches supports a secure connection, although a gasket or seal is not included and should be sourced separately.

About the Four Seasons Thermostat Housing Product Line

The Four Seasons Thermostat Housing line focuses on providing reliable engine coolant components that meet or exceed OEM specifications. This product line is engineered to offer precise fitment and durability for various vehicle makes and models, including Audi and Volkswagen. The 86131 housing is part of this line, designed specifically to accommodate engine cooling system requirements without including the thermostat, allowing for tailored maintenance and repair solutions.

Common Applications and Issues Addressed

• Replacement of cracked or damaged thermostat housing
• Resolving coolant leaks around the thermostat housing area
• Preventing engine overheating due to faulty housing fitment
• Maintaining proper coolant flow in Audi 90 Quattro and Volkswagen Passat models
• Supporting engine temperature regulation in A6 Quattro and S4 vehicles

Installation Notes and Tips

• Ensure the old thermostat housing is fully removed and the mounting surface is clean before installation
• Use a compatible gasket or sealant as the housing does not include a gasket
• Verify bolt hole alignment using the 3.21-inch center-to-center measurement
• Check inlet port diameter compatibility with existing coolant hoses
• Torque bolts to manufacturer specifications to avoid leaks or damage

Quality Assurance and Warranty

The Four Seasons 86131 Thermostat Housing meets or exceeds OEM quality standards, ensuring reliable performance and durability. Manufactured with precision and tested for fit and function, this part supports the longevity of your vehicle’s cooling system. Warranty details are provided by Four Seasons and typically cover defects in material and workmanship under normal use.