ZZ Diesel Fuel System Replacement Kit, with CP4 Pump.
This kit has all the parts that GM recommends to do a complete CP4 replacement.
For 2011, 2012, 2013, 2014, 2015, 2016 GM 6.6L LML Duramax
Note: To receive core refund, you must return all the injectors. When the CP4 pumps fail they contaminate the fuel system. This kit has all the parts that GM recommends to do a complete CP4 replacement.