Replacement O Ring Kit For Delphi Style Injectors 508 19 tank to pump *Modification is required to provide seatbelts and accessories *Modification is required to provide clearance to the pick up tube on both options The Modular Mid Rise intake utilizes the popular Holley LS1 LS2 LS6 cathedral port Mid Rise 2 x 4 intake manifold along with a plenum base adapter and a Holley 92MM EFI plenum top which converts it into a Mid Rise EFI intake manifold Kit contains 4 small and 4 large O Rings Brand Holley Color Black Emission Code 5 Grade Type Performance Material Rubber Product Type Fuel Injector O Ring Qty 8 Rim Shape Round Thickness Standard OEM