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This is a complete cylinder head assembly, a direct replacement for OEM part number 3977221. It is precisely engineered for the 2007-2018 Dodge Cummins 6.7L engine and is compatible with Dodge Ram 2500, 3500, and 4500 models.
The basic kit includes a full set of intake and exhaust valves, valve springs, seats, and locks, providing a solid foundation for your engine rebuild. Please note that the camshaft, rocker arms, and lifters are not included.
Constructed from high-strength cast iron, this cylinder head is built to withstand high pressure, extreme temperatures, and corrosion, resisting deformation or cracking for long-lasting durability even under frequent use.
Each unit undergoes strict quality testing to match OEM parameters. Rigorous factory tests include 0.35-0.45 MPa water passage pressure checks and 2000 kPa valve guide sealing tests to ensure reliable operation from the first startup.
This assembly is designed to restore your engine's performance by providing an optimal compression ratio, efficient combustion, and recovered power output for smooth, dependable driving.
Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.
