GM LT4 High Pressure Fuel Pump LT5 HPFP 12711668

New, genuine GM LT4/LT5 HPFP. Common upgrade for L83/5/6/7 and LT1. 
Part number 12711668
Uses connector 88988963 if needed. 
****IF YOU HAVE A LATER 2018+ LT1/L8x THEN YOU MAY NEED AN ADAPTER HARNESS, WE HAVE THEM AVAILABLE**** 
****IF RUNNING AN AFTERMARKET CAM WITH A 32% FUEL LOBE YOU MAY ALSO NEED TO SHIM THE CAM FOLLOWER THAT PUSHES ON THE HPFP, WITH A LASH CAP****