Engine Rebuild Kit - Less Bearings - Rod R71074 - High Compression fits John Deere 4850 8450 6620 4450 8820 4650 4250 9940 6622 790 5720 7720 5730

There is an additional shipping cost for this product: $75.95

Condition: New

  • Compatible with John Deere Tractor(s) 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 & Industrial(s) 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 106767
  • For .010" connecting rod bearing use 106768
  • For .020" connecting rod bearing use 106769
  • For .030" connecting rod bearing use 106770
  • For standard main bearing use 106835
  • For .010" main bearing use 106836
  • For .020" main bearing use 106837
  • For .030" main bearing use 106838
  • Additional Handling & Oversize Fees Apply To This Item
  • All new, rebuilt and used tractor parts have a 1-year warranty

  • To receive this product outside the continental U.S., you must call 877-530-4430 to make arrangements
  • WARNING: Cancer and Reproductive harm. See www.P65Warnings.ca.gov
WARNING: Cancer and Reproductive harm. See www.P65Warnings.ca.gov
SKU 130633
Contact a Parts Specialist today at 1-800-333-0650 for more information
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H&R Construction Equipment Parts is a leading supplier of new, rebuilt, and used parts since 1984 for the major manufacturers of excavators, wheel loaders, bulldozers, articulated trucks, and skid steers. Our warehouses consists of over 140,000 sq. ft. of space to house our inventory, along with 40 acres of outside storage.

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