Piston Ring Set, 4.000" Bore

The Hastings 2M5508 piston ring set is engineered for 8-cylinder engines with a specific 4.000-inch bore size. This set is crucial for properly sealing the piston to the engine block, addressing common issues such as excessive oil consumption, blue exhaust smoke, or a loss of engine power. The ring set features specific material and dimensional qualities for optimal performance. The top ring has a width of 5/64 inches and is made from durable DUCTILE IRON PLASMA MOLY. Complementing this, the second ring also measures 5/64 inches and is constructed from GREY IRON PHOSPHATE. The oil control ring is 3/16 inches wide, utilizing a STEEL RAIL with a STAINLESS EXP CHROME expander for effective oil management. Hastings has been a dedicated manufacturer of piston rings since 1915, focusing solely on developing and refining this critical engine component. These rings are suitable for both engine rebuilds and new builds, offering reliability for daily drivers and performance vehicles alike. The 2M series is noted as a best-selling ring series, known for its high tensile ductile iron top rings.