This roller lifter retainer and guide set is designed for 5.0L and 5.7L V8 engines using factory-style roller valvetrains. Covering model years 1986–1997, it provides a direct replacement for worn or missing lifter control hardware and ensures proper roller lifter alignment. The kit includes a lifter retainer, three mounting bolts, and eight lifter guide clips, matching reference numbers 811662 and 17341T commonly used in marine and automotive V8 applications. Built for durability, these components maintain lifter stability under high-temperature and high-load conditions, supporting smooth valvetrain operation and extended engine life. Ideal for engine rebuilds, maintenance, or upgrading older V8 platforms to reliable roller lifter control. Engine Quest produces high-quality OE-style replacement parts. Each part undergoes rigorous testing and inspections to meet EngineQuest's exact specifications. Designed for precision manufacturing and durability, our products ensure easy installation. With nearly 500 SKUs available, the company specializes in hard-to-find, in-demand parts, including those no longer available from the OEM, difficult to salvage, or with prohibitively high OEM costs.