FYI we no longer sell race fuel.
This Valve is naturally Closed,when vacuum is applied, Valve Opens.
This lever is naturally CLOSED; when vacuum is applied, the valve is OPEN, allowing heat to enter the vehicle. 5/8" Inlet and Outlet
You Need To CHECK Your Vehicle And Your Current Heater Valve's Action, & Make Sure That The OPEN/VACUUM & CLOSED/NO VACUUM Positions Are The Same As This!..To Insure You Receive The Correct Heater Valve.
**PLEASE CHECK YOUR VALVE BEFORE ORDERING**