EngineQuest Assembled Cast Iron Cylinder Head Pair

The EngineQuest EQ-CH318AA is an assembled pair of cylinder heads specifically engineered for Mopar V8 engines. These heads replace original casting numbers 53005714, 53006671, 53020466, and 53020468, offering a robust upgrade from stock. Constructed from the highest grade cast iron, the EQ-CH318AA features thicker decks for enhanced strength and an improved design that resists cracking. The internal components are 100% new, including OE-type valves, seals, valve springs, and retainers. These cylinder heads boast a superior port finish for increased flow and redesigned water passages for improved thermal conductivity. Additional features include hardened exhaust seats, CNC-machined guides and seats, and a 3-angle valve finish, all subjected to a 25-point quality check. These assembled cylinder heads are compatible with Dodge, Chrysler, and Jeep vehicles equipped with the Magnum 5.2L (318 CID) and 5.9L (360 CID) V8 engines. The specified fitment years are from 1990 to 2003.