Direct replacement for part number K-0650 both in quality and functions. Specially designed to easily & properly service the oil free air compressor pumps for cylinder, extends the life of the compressor and saves your money for a new one. (Recommended on Twin Cylinder Air Compressor Pumps that both cylinder sleeves and piston rings be replaced at the same time so that the air compressor pump produce equal air output and not be out of balance.) This Compression Ring Kit contains 5 parts: 1 x D25837 Coated Cylinder Sleeve, 1 x - Coated Oil Free Piston Ring, 1 x SSF-3158-1 Piston Rod Cap Screw, 1 x -8156 Valve Plate to Cylinder Sleeve O-Ring, 1 x ACG-45 Cylinder head to Valve Plate O-Ring. Compatible with both the single cylinder oil-free pumps and the twin cylinder oil-free pump of the following model Oil-Free air compressors: Fits for Deviliss; Fits for ; Fits for ; Fits for ; Fits for Snap On; Fits for ; Fits for Air America; Fits for Charge Air Pro; Fits for Grainger; Fits for and and many other privately labeled air compressors. Fits model number 165080. The cylinder sleeve is made from high strength STEEL for wear and rust resistance, hardened to tough and high pressure withstand. The piston ring and O-rings are made from top quality RUBBER, help seal the cylinder and provide great airtightness, features with long term reliable service., Weight: 0.36045579837 Pounds, Manufacturer: Duanthry