S&S Diesel Gen 2.1 Ford 6.7 Powerstroke CP4 Big Head Filter Upgrade for Gen 2 Kits | 2011+ Ford Powerstroke 6.7L

S&S Diesel Gen 2.1 2011+ Ford 6.7 Powerstroke CP4 Big Head Filter Upgrade / Retrofit kit for older / 2.0 / 2nd generation kits. This will save you from having to repurchase and install a whole new kit. The CP4 disaster prevention kit cannot prevent the CP4 pump from failing. What it does do is prevent the contamination from the failure from entering the high pressure fuel system.

How it Works

The CP4 pump is internally lubricated by diesel fuel from the tank. After lubricating the crankcase area of the CP4 pump, fuel enters the high pressure pumping chambers and exits under pressure to the fuel rails and fuel injectors. The weakness of the CP4 pump lies in the crankcase area where a set of roller lifters ride on a camshaft. When the failure event occurs the lubricating fuel becomes contaminated immediately. Our bypass kit mounts to the CP4 pump and changes the routing of the fuel flow so that lubricating fuel from the crankcase is directed back to the fuel tank to be filtered before going through the fuel system again. Thus all fuel entering the pumping elements of the CP4 pump and leaving for the injectors is always routed through both of the vehicle's fuel filters to eliminate any change of contamination from a high pressure pump failure.