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John Deere 4850 Engine Rebuild Kits

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Cylinder Kit - For John Deere tractor models 4040, 4050, 4240, 4250, 4440, 4450, 4640, 4650, 4840, 4850, Compatible with John Deere Combine (s) 6620, 6622, 7720, Compatible with John Deere Construction and industrial models 644C, 644D, 646C, 653E, 690C, 690CR, 693C, 740A, 743, 743A, 762A, 762B, 770A, 770AH, 770B, 770BH, 772A, 772AH, 772B, 772BH, 790, 790D, 792, 850B, Replaces John Deere OEM number RE60282, (Item #: 167500) $149.00

Cylinder Kit, High Performance - For John Deere tractor models 4250, 4450, 4650, 4850, 8450, Compatible with John Deere Construction and industrial models 644C, 644D, 646C, 690D, 693C, 740A, 743, 743A, 762A, 762B, 770A, 772A, 790, 790D, 792, 850B, Compatible with John Deere Engine (s) 6466A, 6466T, Replaces John Deere OEM number RE60282HC, High Compression, (Item #: 167422) $223.00

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Engine Rebuild Kit - Less Bearings - Rod R71074 - High Compression, 6466A, 6466T - For John Deere tractor models 4250, 4450, 4650, 4850, 8450, Compatible with John Deere Combine (s) 6620 (late), 6622 (late), 7720 (late), 7722 (late), 8820 (late), Compatible with John Deere Harvester (s) 5720 (late), 5730 (late), 9940 (late), 9950 (late), Compatible with John Deere Construction and industrial models 644C (late), 644D (late), 646C (late), 690C, 693C (late), 740A (late), 743A (late), 762A (late), 762B (s/n 818908-earlier), 770A (late), 770AH (late), 770B (early), 770BH (early), 772A (late), 772AH (late), 772BH (early), 790, 790D, 792, 850B, Compatible with John Deere Engine (s) 6466A (diesel), 6466T (diesel), Bore: 4.5625", Connecting rod marked R71074, Stepped-tapered pin bushing, 1.875" piston pin, Kit includes: High Compression Easy Start Pistons, Piston Ring Set, Liners, Connecting Rod Bushings, and Gasket set with Crank Seals, High Compression Easy Start pistons are produced from an aluminum hypereutectic alloy. This allows the pistons to: Retain a higher percentage of strength and hardness during normal operations, Have a very low coefficient of thermal expansion, Have a higher resistance to wear, Have a higher tensile strength. The combustion bowls in these pistons are engineered to create higher compression. These pistons raise the static compression of an engine approximately 1-1.5 points. They ignite a larger ratio of fuel / air per stroke, which wastes less raw fuel. This translates into: Improved cold weather starting, Increased horsepower, Extended engine life, Kit does not include connecting rod or main bearings, For standard connecting rod bearing use Item #: 106838, Additional Handling and Oversize Fees Apply To This Item, (Item #: 130633) $1649.01

Engine Rebuild Kit - Less Bearings, 6466A - For John Deere tractor models 4840, 4850, 8430, 8440, 8450, Compatible with John Deere Combine (s) 8820, Compatible with John Deere Harvester (s) 5720, 5730, 9940, 9950, Compatible with John Deere Construction and industrial models 644C, 690C, 740A, 762A, 762B, 770A, 770B, 850B, 892, Compatible with John Deere Engine (s) 6466A (diesel, aftercooled, s/n 233593-317858), Replaces John Deere Block Casting number R71688, R71685, R80481, Bore: 4.56", 1.8742" piston pin, Piston RE60284, Connecting rod R71074, Kit includes: Pistons, Piston Ring Set, Liners, Connecting Rod Bushings, and Gasket set with Crank Seals, Kit does not include connecting rod or main bearings, For standard connecting rod bearing use Item #: 106838, Additional Handling and Oversize Fees Apply To This Item, (Item #: 130715) $1759.01

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