This aftermarket replacement piston ring set, part number RE15674, is specifically designed for John Deere engines, offering a reliable and cost-effective solution for engine overhaul or repair. Engineered to meet or exceed original equipment specifications, this set includes rings for a 106.5mm bore piston, with individual ring thicknesses typically measuring 3.17mm, 2.38mm, and 3.46mm. These dimensions correspond to the top compression ring, second compression ring, and oil control ring respectively, ensuring optimal sealing and performance within the combustion chamber. Compatible with a range of John Deere 4045 and 6068 series engines, this non-original piston ring set plays a crucial role in maintaining proper engine compression, controlling oil consumption, and dissipating heat from the piston to the cylinder walls. By providing an effective seal, these rings prevent combustion gases from escaping into the crankcase and minimize engine oil from entering the combustion chamber, which is vital for engine efficiency and longevity. Choosing this high-quality aftermarket alternative ensures your John Deere machinery continues to operate with dependable power and reduced emissions, without the premium cost of an OEM part. Ideal for agricultural, construction, and industrial applications powered by compatible John Deere engines.