FYI we no longer sell race fuel.
Thermostat Housing for 5.7L, 6.1L, 6.4L w/o Heater Hose Nipple
Housing originally used on all 5.7L Car and Truck Engines & 6.1L Engines. Replaces Thermostat Housing used on later Engines that had Heater Hose Nipple that worked with Factory Oil Cooler