Fitting - Hose Barb Thermostat Bypass Large

Thermostat bypass nipple fitting used in both the thermostat housing and waterpump suction port. This fitting is applicable to 1988-1993 GMT400 (new body style C K) 6.2L Diesel trucks, and 1992 - 2002 6.5L Diesel C K truck applications. Used in many more 6.5L and 6.5L Turbo applications. This is the 1 in. hose nipple version.