Chevy and GMC truck owners with 4.8L or 5.3L engines, this Moly Piston Ring Set delivers OEM-quality performance for your engine rebuild! Specifically designed for 1999-2015 LC9 and LS4 engines, this complete set includes 40 rings (standard size) to replace OEM part 2M4978. The plasma moly coating on the first ring provides superior sealing that prevents combustion gases from leaking into the crankcase, improving thermal efficiency and power. The second ring features iron with phosphate coating for durability, while the oil ring uses steel rails with stainless expander for consistent oil control. With bore size of 3.779 inches and thicknesses of 1.5mm for compression rings and 3.0mm for oil rings, these rings fit perfectly without modification. The molybdenum coating reduces friction significantly, ensuring smooth piston movement and preventing cylinder scoring. Perfect for engine rebuilds addressing issues like oil consumption, blue smoke from exhaust, decreased power, or increased fuel economy. The quality manufacturing matches OEM standards, so you get reliable performance without the dealership price. Much better than cheap aftermarket rings that might not seal properly or wear out quickly. Whether you're a professional mechanic or experienced DIYer rebuilding an LS engine, these piston rings provide the sealing and durability needed for a successful engine overhaul. The complete set includes everything needed for one engine, and the precise engineering ensures proper fitment. Seriously, if you want piston rings that restore engine performance and reliability without breaking the bank, this moly-coated set delivers professional-grade results at an affordable price. Your rebuilt engine will run stronger and cleaner with proper compression and oil control.
