The EngineQuest Assembled Cylinder Heads are an ideal solution for restoring or upgrading the performance of compatible 5.2L (318 CID) and 5.9L (360 CID) V8 engines from 1992-2003. Engineered with precision and durability, these heads replace part numbers 53005714, 53006671, 53020466, and 53020468. Made from high-quality cast iron, they offer excellent durability and heat resistance to keep your engine cool and performing optimally under any condition. Each head is fully assembled with brand new OE-type components, including valves, valve springs, retainers, locks, and Viton seals. This setup reduces installation time and ensures maximum efficiency from the start. The optimized 172cc intake runners and 62cc combustion chambers, along with hardened exhaust seats and a modern port design, enhance airflow, fuel efficiency, and overall engine performance. Whether you're restoring a compatible truck or SUV, these cylinder heads fit directly without modifications, making them the ideal replacement for worn-out stock heads. With thicker decks for added strength and improved water flow for enhanced thermal conductivity, these heads are built for the toughest conditions. Key Features: - Direct fit for compatible V8 engines (1992-2003). - Constructed from high-grade cast iron for durability and performance. - Fully assembled with all new OE-type components. - Modern port design for improved airflow and efficiency. - 1-year manufacturer warranty. Upgrade your engine with the EngineQuest Assembled Cylinder Heads and enjoy enhanced power, reliability, and performance. 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.