Mr. Gasket Cam Change Gasket Kits include the gaskets, seals, and lifter guides required to install a new cam in your GM LS Series engine. This kit includes the following gaskets and parts: timing cover gasket, water pump gaskets, timing cover seal, intake seals, valve cover gaskets, and (4) lifter guides (Lifter Guides Not for Use w/ Active Fuel Management). These gaskets & seals are high quality OEM style parts and the lifter retainers should also be replaced when the tappets are removed or replaced. Choose from three part numbers based on the cylinder head intake port (i.e. LS1/LS2/LS6 Cathedral Port, LS3/L92 Ports, or LS7 style ports).