Motorad 5617KT Engine Coolant Thermostat Housing Assembly - Upper

OE-Style Thermostat Housing Assembly

Motorad 5617KT is an engine coolant thermostat housing assembly built for OE-specified cooling system service. It is made with steel, stainless steel, copper, and rubber components, and the copper case with wax compound is engineered for quick reaction to coolant temperature changes. This kit is a direct-fit cooling repair for select Ford, Mercury, and Lincoln applications, including Crown Victoria, Grand Marquis, Explorer, Mountaineer, Mustang, and Town Car models.

The Motorad Kit line focuses on OE-specification replacement parts for cooling system repairs. Motorad 5617KT follows OEM materials and manufacturing processes, with an offset design, air relief valve, and OEM-style seals included where applicable for the listed applications.

• Engine coolant thermostat housing assembly for upper cooling system service
• OE-specified 195F thermostat application
• Copper case and wax compound for responsive temperature control
• Offset design for the listed vehicle applications
• Air relief valve included where applicable
• Silver finish with steel, stainless steel, copper, and rubber construction
• Two-bolt housing design

Detailed Application Coverage

Motorad 5617KT is used on upper thermostat housing locations for select Ford Crown Victoria, Mercury Grand Marquis, Lincoln Town Car, Ford Explorer, Mercury Mountaineer, and Ford Mustang cooling systems. Fits 2008 Ford Crown Victoria, Upper; Fits 2008 Mercury Grand Marquis, Upper; Fits 2006-2007 Ford Crown Victoria, Upper; Fits 2004-2007 Lincoln Town Car, Upper; Fits 2006-2007 Mercury Grand Marquis, Upper; Fits 2000-2005 Ford Crown Victoria, N/A; Fits 2002-2005 Ford Explorer, N/A; Fits 2001-2005 Mercury Grand Marquis, N/A; Fits 2002-2005 Mercury Mountaineer, N/A; Fits 2002-2004 Ford Mustang, N/A; Fits 2001-2003 Lincoln Town Car, N/A. This part cross-references 95617KT and NI for the same application. Motorad 5617KT is a practical OE-style replacement when the original thermostat housing shows wear, leakage, or temperature-control issues.

Common Repair Symptoms

• Coolant leaking from the thermostat housing area
• Engine temperature fluctuating outside normal range
• Delayed coolant warm-up or slow thermostat response
• Corrosion or deterioration at the housing surface
• Failed seal or housing distortion at the coolant outlet

Installation Notes

Verify the vehicle year, engine cooling configuration, and housing position before installation. Clean the mating surfaces thoroughly and inspect the coolant passages, hose connections, and adjacent seals for damage or buildup. Because bolts are not included and a gasket or seal is not listed as included, confirm the required sealing components for the specific application before beginning the repair.

Quality Assurance

Manufactured by an OE supplier using OEM-quality materials and safety standards, this thermostat housing assembly is built to OE specifications and processes for the listed applications. The design and material selection are intended to meet the demands of automotive cooling systems in Ford, Mercury, and Lincoln service.