RE507852 PISTON RING STD Fits John Deere 4.239 6.359 106.5mm (RE66820) model-640G Fits Bart Mill

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RE507852 PISTON RING STD Fits John Deere 4.239 6.359 106.5mm (RE66820) model-640G Fits Bart MillOne New Aftermarket Replacement Piston Ring Set (STD) Fits John Deere 4. 239 and 6. 359 Series Engines This standard bore piston ring set fits one piston in Fits John Deere 4. 239 and 6. 359 series diesel engines, including the 4045 and 6068 PowerTech engine families. Each set contains 3 rings per cylinder and is designed to restore compression, reduce blow by, and return engine performance to like new specifications. Compatible with a wide range of