Housing Set, Fuel Injector LH & RH, 2nd Design for 1991 & 1992 ZR-1 LT5. Sold as a matching set only, LH PN 12507649 and RH PN 12507650. One (1) set containing both LH & RH housings is required per engine. Second Design which does NOT have the washer/baffles in the crankcase ventilation ports for the PCV system.

NOTE: This is a NEW, GM, "NOS" part.