Ring Set for 3 pistons. For Yanmar 3TN66UJ 3TN66-UJ Engine John Deere 655 Tractor. The item “Overhaul Rebuild Kit for Yanmar 3TN66UJ 3TN66-UJ Engine John Deere655 Tractor#ZX” is in sale since Monday, June 8, 2020. This item is in the category “Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment\Excavators”. The seller is “chengaoshop” and is located in shenzhen, guangdong. This item can be shipped worldwide.