OER Series Fuel Return Line Assembly 2011-2016 GM 6.6L Duramax LML/LGH XDP Xtreme Diesel Performance Clean threads provide accurate torque

Clean threads provide accurate torque readings and will help give you peace of mind during your engine build or head gasket repair

The XDP Competition and Race Performance Pushrods feature a larger 7/16 inch diameter to give you a drastic strength increase that will support 1000HP+

to help remove all debris and prevent any future recontamination in the fuel system

Opening clearances are set to stringent specifications

OER Series Fuel Return Line Assembly 2011-2016 GM 6.6L Duramax LML/LGH XDP Xtreme Diesel Performance Clean threads provide accurate torqueRestore the fuel system in your 2011 2016 GM 6. 6L Duramax LML LGH with the XDP OER Series Fuel Return Line Assembly XD607. If you have dealt with a CP4 pump failure, debris and contamination have most likely worked their way throughout your fuel system. When these metal shavings and other contaminants gets in the return line it can block the regulator and prevents adequate return fuel pressure. In the event of a failed CP4, it is recommended that you