Motorad 548-192 Engine Coolant Thermostat Housing Assembly

Reliable Cooling with Motorad Integrated Housing Thermostat

The Motorad Integrated Housing Thermostat 548-192 is designed to maintain optimal engine temperature for Jaguar vehicles including the S-Type, Vanden Plas, XJ8, and XJR models. This engine coolant thermostat housing assembly ensures precise temperature regulation starting at 192°F to protect your engine from overheating or excessive cooling.

• Integrated thermostat housing assembly with bleeder hole for air release
• Three bolt holes for secure mounting
• Includes jiggle pin to improve coolant flow and air bleeding
• Constructed from durable plastic, stainless steel, and copper materials
• Two outlet ports with diameters of 1.61 inches and 0.80 inches
• Designed for a 192°F opening temperature to match OEM specifications

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 engine temperature control. The 548-192 part number is a direct replacement for select Jaguar models, engineered to meet factory standards for fit and function.

Detailed Product Description

This engine coolant thermostat housing assembly features a built-in thermostat calibrated to open at 192 degrees Fahrenheit, which is critical for maintaining the correct operating temperature in Jaguar S-Type, Vanden Plas, XJ8, and XJR engines. The housing includes a bleeder hole and a jiggle pin to facilitate air removal from the cooling system, preventing air pockets that can cause overheating. Made from a combination of plastic, stainless steel, and copper, the assembly balances durability with corrosion resistance. The three bolt holes ensure a secure fit, while the two outlet ports accommodate the necessary coolant flow paths with diameters of 1.61 and 0.80 inches respectively.

Common Applications and Issues Addressed

• Replacement for faulty or leaking thermostat housings on Jaguar S-Type, Vanden Plas, XJ8, and XJR
• Resolves engine overheating caused by thermostat failure
• Eliminates coolant leaks from damaged or cracked housing
• Prevents air lock issues in the cooling system with integrated bleeder hole and jiggle pin
• Restores proper coolant flow and temperature regulation

Installation Notes and Tips

Ensure the engine is cool before beginning installation. The Motorad 548-192 thermostat housing assembly requires three bolts for mounting; note that bolts, gasket, and other hardware are not included. Proper sealing surfaces should be cleaned thoroughly before installation to prevent leaks. The integrated jiggle pin and bleeder hole assist in removing trapped air during coolant refilling. Follow vehicle-specific service manual instructions for torque specifications and coolant system bleeding procedures.

Quality Assurance and Warranty

Motorad manufactures this Integrated Housing Thermostat assembly to meet OEM quality standards for Jaguar vehicles. While specific warranty details are not provided, Motorad products typically undergo rigorous testing to ensure durability and performance. Using the correct part number 548-192 guarantees compatibility and reliable operation within the specified temperature range of 192°F.