Genuine John Deere RE66271 piston ring set  for John Deere PowerTech 4.5 and 6.8 one set does one cylinder so you will need 4 sets for a 4 cylinder and 6 sets for a six cylinder. This is a new set of parts, we can verify proper fitment! Please send us your ESN before buying, unless you are a pro! As a used pull off part, new pull off part, or a new still in the packaging one, know that we have inspected it for any malfunctions or signs of future durability issues, we care about our customers and providing the parts they need. Rest assured, as we only sell OEM or OEM+ parts meeting or exceeding equipment standards, it is sure to last.

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