Heat Cover for Mechanical Fuel Pump to Prevent Vapor Lock

Insulated Mechanical Fuel Pump Cover – Fits Willys & Jeep F134 and L134 Engines Help reduce fuel vaporization and combat vapor lock with this insulated fuel pump cover designed to fit over single-action mechanical fuel pumps found on many Willys and Jeep vehicles. This protective cover helps shield the fuel pump from excessive engine compartment heat, reducing the likelihood of fuel boiling inside the pump during hot weather, slow-speed trail driving, and high-altitude operation. The JeepsterMan Team has successfully used these covers on the annual Fall Colors Tour, where steep grades, warm temperatures, and changing elevations can create conditions that contribute to vapor lock. By insulating the fuel pump from radiant engine heat, this cover can help improve fuel delivery consistency and drivability. Features: Fits single-action mechanical fuel pumps Helps reduce heat transfer to the fuel pump May help minimize vapor lock in hot weather and high-altitude conditions Easy installation Reusable insulated construction Common Symptoms of Vapor Lock: Engine stumbling or hesitation after warming up Loss of power on steep grades Hard starting when hot Engine stalls after extended driving in warm temperatures Fits: Willys vehicles equipped with L134 Go-Devil engines Willys vehicles equipped with F134 Hurricane engines Other Jeep applications using the original-style single-action mechanical fuel pump Why Use an Insulated Fuel Pump Cover? Mechanical fuel pumps mounted directly to the engine are exposed to significant heat. Under certain conditions, fuel can begin to vaporize inside the pump before reaching the carburetor. This insulated cover helps reduce heat absorption and may improve fuel system performance during demanding driving conditions.