XDP OER Series Fuel Return Line Assembly 11-16 GM 6.6L Duramax LML

If you have dealt with a CP4 failure in your LML Duramax, you will find debris in every part of your fuel system. One component that could be overlooked is the fuel return line assembly. Replace your contaminated return line with the XDP OER Series Fuel Return Line Assembly. This is a direct replacement line assembly that will service both banks of fuel injectors. A new regulated return valve is included for a complete install.