Motorcraft RT1167 is an OE-style mechanical thermostat for maintaining the specified coolant operating range on select 4.0L V6 Ford and Mercury applications. It is built for Ranger, Explorer, Explorer Sport, Explorer Sport Trac, Mustang, and Mountaineer platforms where a worn thermostat can cause slow warmup, unstable temperature control, or weak heater output.

Motorcraft RT1167 Thermostat Features:

• Standard-flow mechanical thermostat with a 190 F (88 C) opening temperature rating for the engine coolant control strategy specified for compatible applications.
• Copper and steel construction combines a compact thermostat body with a stainless steel spring designed for consistent compression during heat cycling.
• Streamlined Venturi-style nozzle supports coolant movement through the thermostat housing without adding unverified high-flow claims.
• Heavy-duty internal design uses a brass or stainless bridge and spring frame, an expansive wax element, a brass heat-motor housing, a rulon piston seal, and tapered stainless steel pistons with flexible elastomer boots.
• Approximate physical size is 2.95 in. x 2.45 in. x 2.49 in., with an approximate weight of 5 oz.