Engine Rebuild Kit - Less Bearings - Rod R57303 - High Compression fits John Deere 6602 4640 7720 6620 5720 8430 8440 8450 4440 6622 9940 4840 8820

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

Condition: New

  • Compatible with John Deere Tractor(s) 4440, 4640, 4840, 8430, 8440, 8450 (early)
  • Compatible with John Deere Combine(s) 6602 (s/n 163500-later), 6620 (early), 6622 (early), 7720 (early), 8820 (early)
  • Compatible with John Deere Harvester(s) 5720 (early), 9940 (early)
  • Compatible with John Deere Construction & Industrial(s) 644A (early), 646C (early), 740A (early), 743, 743A, 762A (early)
  • Compatible with John Deere Engine(s) 6466A (diesel), 6466T (diesel)
  • Bore: 4.5625"
  • Connecting rod marked R57303, R67320
  • Tapered pin bushing
  • 1.875" piston pin
  • Kit includes: High Compression Easy Start Pistons, Piston Ring Set, Liners, Connecting Rod Bolts and 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
  • WARNING: Cancer and Reproductive harm. See www.P65Warnings.ca.gov
WARNING: Cancer and Reproductive harm. See www.P65Warnings.ca.gov
SKU 130636
Contact a Parts Specialist today at 1-800-333-0650 for more information
About H&R Construction Equipment Parts

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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