FOR MODELS EQUIPPED WITH V8 DURAMAX LBZ LLY LMM ENGINES. - Bosch 0445020037 is the Bosch high‑pressure CP3 fuel injection pump used in GM's 6.6L Duramax diesel engines, particularly for the LBZ. CP3 COMMON-RAIL FUEL INJECTION PUMP REBUILD GASKET & O-RING REPAIR KIT.
