Precision Fit: Direct replacement for OEM part numbers 55573669, 55565291, etc. The cylinder head assembly is precisely engineered for 2011-2019 Chevy Cruze, Sonic, and Trax 1.4L turbo engines. Please confirm your engine type and model before purchase

Complete Kit: This engine cylinder head assembly comes as a complete pre-installed solution. It includes intake and exhaust camshafts, sixteen valves with springs, rocker arms, and lifters, reducing the risk of installation errors

Industrial-Grade Aluminum Alloy: Built from high-rigidity aluminum alloy for rapid heat dissipation, our complete cylinder head withstands extreme temperature and pressure. It delivers long-lasting durability even under frequent use

Strict Quality Testing: Each cylinder head is built to match OEM parameters and undergoes rigorous factory testing, including 0.35-0.45 MPa water passage pressure and 1500 kPa valve guide sealing tests. It ensures reliable operation from the first startup

Restore Engine Performance: This complete cylinder head assembly is designed to restore your engine's performance. It provides optimal compression ratio, efficient combustion, and recovered power output for smooth, dependable driving