This complete cylinder head assembly is designed for 2.5L 4-cylinder engines from 1987–2002, replacing casting numbers 117 and 403. Built from high-grade cast iron, this head features a thicker and more durable casting, engineered to improve performance, resist cracking, and optimize flow. The head is 100% brand new, with no reused components. It comes fully assembled with new valves, valve springs, retainers, stem seals, and keepers, making it a reliable, direct replacement for your OE head. This head fits models using 1/2" head bolts and is suitable for a wide range of 2.5L engine applications. Assembly does not include cam or lifters. 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.