Piston Ring Set 4.310 Moly 1/16 1/16 3/16

The MAHLE Original Piston Ring Set 4.310 Moly 1/16 1/16 3/16 is a precision eight-cylinder engine component engineered for file-fit installation and optimized for high-performance rebuilds. This piston ring kit features plasma moly coating on the compression rings, delivering superior wear resistance and reduced friction across extended operating cycles. Manufactured by MAHLE Original/Clevite, a trusted name in OEM and aftermarket engine components, this set provides the durability and precision tolerances required for professional-grade engine reconditioning and restoration work.

The ring set specifications are precisely engineered: 4.310-inch bore diameter with 1/16-inch top and second compression ring thickness and 3/16-inch oil control ring thickness. Standard tension rings provide consistent blow-by control and cylinder sealing while the plasma moly treatment on the compression rings reduces scuffing and extends service life under high-heat conditions. File-fit design requires honing to the exact bore specification during installation, ensuring proper ring gap and wall contact. The steel construction combined with moly coating balances thermal expansion characteristics with durability, making this ring set suitable for both stock and modified eight-cylinder engines operating within normal performance parameters.

This piston ring set is intended for engine builders, machine shops, and restoration specialists performing complete engine rebuilds on eight-cylinder engines with 4.310-inch bore diameter. The file-fit specification allows for bore-specific customization during honing, which is essential for engines with worn or previously repaired cylinders. Proper installation requires precision honing equipment and expertise to achieve correct ring gap clearances—typically 0.003–0.005 inches for compression rings and 0.015–0.055 inches for the oil ring, depending on engine specifications. The moly-coated compression rings are particularly valuable in high-rpm or boost applications where friction reduction and wear resistance are critical to longevity.