This is a Brand New Premium Quality Major Engine Overhaul Kit. It is for rebuilding the original John Deere 4.239T TURBO Diesel (300 SERIES) Engine in the following equipment. Please check Engine Serial Numbers Below. John Deere LOADER BACKHOE : 310C (w/ 4.239T Turbo Engine). John Deere LOADER BACKHOE : 310D (w/ 4.239T Turbo Engine). John Deere LOADER BACKHOE : 315C (w/ 4.239T Turbo Engine). John Deere LOADER BACKHOE : 315D (w/ 4.239T Turbo Engine). John Deere LOADER BACKHOE : 515B (w/ 4.239T Turbo Engine). John Deere EXCAVATOR : 490 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 1052 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 1155 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2140 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2450 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2555 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2650 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2750 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2755 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2850 (w/ 4.239T Turbo Engine). John Deere TRACTOR : 2855 (w/ 4.239T Turbo Engine). John Deere WINDROWER : 3830 (w/ 4.239T Turbo Engine). Included in this kit. 4 x Piston, Rings, Liner Kit. 1 x Main Bearing Set w/ Thrust Washer Set. 1 x Connecting Rod Bearing Set. 1 x Front Engine Seal. 1 x Rear Engine Seal. 8 x Connecting Rod Bolt. 4 x Connecting Rod Bushing. 6 x Balancer Shaft Bushing. 1 x Complete Overhaul Gasket Set. Kit Weight : 60 lbs. Bore : 4.19 (106.5mm). Wrist Pin Diameter : 1.625 (41mm). Connecting Rod Casting Number : R80032, R113612, R122191. TractorPartsDirect has a full line of tractor parts and accessories available. Don’t Settle for Second Best, when it comes to choosing an engine kit supplier. TractorPartsDirect engine kits are unsurpassed when it comes to quality. Many of our suppliers are the same suppliers that sell to original equipment manufacturers. Our cylinder components are manufactured to OEM specifications and will restore tired engines to their original level of performance, maintaining that level for years to come. Our engine products represent the latest in manufacturing technology. TractorPartsDirect engine kit suppliers commitment to continuous improvement acts as the catalyst toward the development of innovative CAD/CAM designs and CNC manufacturing of cutting-edge, high quality products. Heavy-duty permanent mold pistons are cast with ni-resist inserts bonded into the top or the top and second ring grooves. These metallurgical, high nickel content iron inserts extend the life of the pistons by reducing groove wear. Close tolerance ring groove specifications prevent blow-by, assuring. Our liner packings are molded with the latest compounds such as viton, which remains pliable and resilient for thousands of engine hours. Plus, our piston rings offer you superior materials and trouble free installation. Premium ring sets contain moly or chrome faced top compression rings for longer wear under severe operating conditions…. In addition, our gasket kits and bearings come from quality suppliers and are designed to “fit” the application in question.