Four Seasons 85963 Engine Coolant Thermostat Housing

Reliable Engine Coolant Thermostat Housing for Audi A4 Models

The Four Seasons Thermostat Housing 85963 is designed specifically for Audi A4 and A4 Quattro vehicles. This engine coolant thermostat housing ensures proper temperature regulation and cooling system performance, helping maintain your engine's optimal operating conditions.

• Constructed from durable plastic material for corrosion resistance
• Includes gasket and seal for a secure, leak-free installation
• Comes with thermostat pre-installed for convenience
• Flange thickness of 0.400 inches and inlet port diameter of 1.019 inches
• Bolt hole center-to-center measurement of 2.75 inches for precise fitment
• Overall height of 3.334 inches to match OEM specifications
• Meets or exceeds OEM standards for reliable performance

About the Four Seasons Thermostat Housing Product Line

The Four Seasons Thermostat Housing line focuses on engine coolant components engineered to meet or exceed original equipment manufacturer requirements. This product line offers integrated thermostat housings designed to simplify installation and ensure consistent engine temperature control. The 85963 model includes the thermostat and necessary seals, providing a complete solution for Audi A4 cooling system maintenance.

Detailed Product Description

The Four Seasons 85963 thermostat housing is made from high-quality plastic, offering resistance to corrosion and heat. It features a flange thickness of 0.400 inches and an inlet port diameter of 1.019 inches, ensuring compatibility with the cooling system of Audi A4 and A4 Quattro models. The included gasket and seal help prevent coolant leaks, while the pre-installed thermostat streamlines replacement procedures. With a bolt hole center-to-center distance of 2.75 inches and an overall height of 3.334 inches, this housing matches OEM dimensions for a precise fit.

Common Applications and Issues Addressed

• Replacement of cracked or damaged thermostat housing
• Resolving coolant leaks around the thermostat area
• Addressing engine overheating due to thermostat failure
• Maintaining proper coolant flow and engine temperature regulation
• Upgrading worn or degraded cooling system components

Installation Notes and Tips

When installing the Four Seasons Thermostat Housing 85963, ensure the engine is cool before beginning work. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly before placing the included gasket and seal. Tighten bolts evenly to the manufacturer’s torque specifications to prevent leaks. Since the thermostat is pre-installed, verify its orientation matches OEM setup for proper operation.

Quality Assurance and Warranty

This thermostat housing meets or exceeds OEM standards, providing reliable performance for Audi A4 and A4 Quattro vehicles. Four Seasons products are manufactured under strict quality controls to ensure durability and fitment accuracy. The 85963 part number is backed by Four Seasons’ warranty coverage, offering peace of mind for your cooling system repairs.