Motorad 634-160 Engine Coolant Thermostat Housing Assembly - Upper

Reliable Engine Coolant Thermostat Housing for Toyota Vehicles

The Motorad Integrated Housing Thermostat 634-160 is designed to maintain optimal engine temperature for Toyota 4Runner, FJ Cruiser, Tacoma, and Tundra models. This engine coolant thermostat housing assembly ensures precise temperature regulation with a 160°F opening temperature, helping to protect your engine from overheating or inefficient cooling.

• Bypass diameter: 1.18 inches
• Bypass length: 1.66 inches
• Outlet diameter: 1.35 inches
• Material: durable plastic, stainless steel, and copper components
• Includes a rubber gasket seal for secure fitment
• Three bolt holes for stable mounting
• Single outlet port design
• Opening temperature set at 160°F

About the Motorad Integrated Housing Thermostat Product Line

The Integrated Housing Thermostat line by Motorad combines the thermostat and housing into a single assembly, simplifying installation and improving reliability. This design reduces potential leak points and ensures consistent coolant flow. The 634-160 part number is part of this line, engineered specifically for select Toyota models to meet OEM specifications.

Product Details and Specifications

This thermostat housing assembly features a 1.18-inch bypass diameter and a 1.66-inch bypass length, allowing controlled coolant circulation during engine warm-up. The outlet port diameter measures 1.35 inches, compatible with the cooling system of Toyota 4Runner, FJ Cruiser, Tacoma, and Tundra vehicles. Constructed from a combination of plastic, stainless steel, and copper, the housing balances durability and corrosion resistance. The included rubber gasket seal ensures a tight, leak-free connection. The thermostat opens at 160 degrees Fahrenheit, maintaining proper engine operating temperature.

Common Applications and Problem Solving

• Replaces faulty or leaking thermostat housings in Toyota 4Runner, FJ Cruiser, Tacoma, and Tundra
• Resolves engine overheating caused by thermostat failure
• Prevents coolant leaks due to worn or damaged seals
• Improves engine warm-up time with integrated bypass design
• Maintains consistent coolant flow for optimal engine performance

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Remove the old thermostat housing carefully to avoid damaging surrounding components. Clean the mounting surface thoroughly before installing the new Motorad 634-160 thermostat housing assembly. Use the included rubber gasket seal to prevent leaks. Torque the three bolts evenly to the manufacturer’s specifications. Verify proper coolant flow and check for leaks after installation.

Quality Assurance and Warranty

Motorad manufactures the Integrated Housing Thermostat 634-160 to meet strict quality standards, using corrosion-resistant materials for long service life. This part is designed to match OEM fit and function for Toyota 4Runner, FJ Cruiser, Tacoma, and Tundra models. Warranty information is available from the manufacturer or distributor to ensure customer confidence in product reliability.