Barb Size: 3/4"(1.9cm). Excellent Quality: The heater core shut off valve is made of solid brass body and plated handle, which is strong and not easy to corrode, and has a long service life. It adopts one-piece structure and has good sealing.
15738103 , 15-5586 New OEM GM Heater Shut-off Valve
INTERNATIONAL OEM - WATER / HEATER SHUT OFF VALVE 3680031C1
Solid Brass 4-Way Automobile Heater Valve Bypass Valve 3/4" Barb 305℉ Max Temp