Built with a specially machined black anodized adapter plate, the XDP CP4 Bypass Kit is designed to re-route the fuel that lubricates your CP4 pump. When your CP4 pump does fail, the contaminated fuel will go back to the tank, and then through both fuel filters, before it re-enters your high pressure fuel system. Safeguard the fuel system in your 2015-2019 Ford with the XDP 6.7L Powerstroke CP4 Bypass Kit XD282.
Convert your LML's Fuel System from a CP4 to a CP3The stock CP4 is only capable of supporting up to 500rwhp and was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms.A CP3K is capable of supporting 600+ rwhp in conjunction with the piezoelectric injectors.