This is a A-IK6591 In Frame Engine Overhaul Kit PN: IK6591Main Description As Following : A-IK6591 In Frame Engine Overhaul Kit P.N: IK6591 John Deere In-Frame Engine Overhaul Kit for 6.303 Diesel, 300 Series engine. 6 Cyl. Block #: R53260, R55035, R55351, R72970, R79280, T32346. Bore: 3.86??? (98mm), Pin: 1.185??? (30mm). Kit contains: Piston Liner Kit, Connecting Rod Bearing Set, Connecting Rod Capscrew, Upper Gasket Set, and Oil Pan Gasket. Fits John Deere models: 3420, and 544.6 CYL. ^ BLOCK: R53260, R55035, R55351, R72970, R79280, T32346Bore: 3.86" 98mm, Pin: 1.185", 30mm Found in Section & Models : Engine Overhaul Kits > 6.303 Diesel, 300 Series, John Deere INDUSTRIAL/CONSTRUCTION: 3420 (SN 158976>, 6.303 ENG), John Deere INDUSTRIAL/CONSTRUCTION: 544 (SN 158976>, 6.303 ENG), John Deere TRACTOR: 3120 (Diesel Engine 6.303) Associated Items : New Also This is An Aftermarket Product And : John Deere In-Frame Engine Overhaul Kit for 6.303 Diesel, 300 Series engine. 6 Cyl. Block #: R53260,
R55035, R55351, R72970, R79280, T32346. Bore: 3.86� (98mm), Pin: 1.185� (30mm). Kit contains:
Piston Liner Kit, Connecting Rod Bearing Set, Connecting Rod Capscrew, Upper Gasket Set, and Oil Pan
Gasket. Fits John Deere models: 3420, and 544. 6 CYL. ^ BLOCK: R53260, R55035, R55351, R72970, R79280, T32346 Bore: 3.86" 98mm, Pin: 1.185", 30mm