Parts Geek - For 1974 Plymouth PB100 Van Thermostat 94718PMBS. 1974 Plymouth PB100 Van 5.9L V8. 1974 Plymouth PB100 Van 5.2L V8. Notes: Fail-Safe -- The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.; Temperature 180F; Alternate Temperature Option.
