Engine Rebuild Kit - Less Bearings - High Compression 6404D John Deere 4230 404 7700 6600 4040 6404D 6602

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Engine Rebuild Kit - Less Bearings - High Compression 6404D John Deere 4230 404 7700 6600 4040 6404D 6602
Engine Parts
Stock Number
  • All of our new parts are aftermarket replacements. The use of original manufacturer's names and part numbers is for reference purposes only
  • Fits John Deere Tractor(s) 4040, 4230
  • Fits John Deere Combine(s) 6600 (s/n 156500-later), 6602 (s/n 1501-later), 7700 (s/n 8001-later)
  • Fits John Deere Engine(s) 404 (diesel, s/n 335846-later), 6404D (diesel, s/n 335846-later)
  • Replaces John Deere Block Casting nos R49470, R49650, R59850, R72128, R87558
  • Bore: 4.250"
  • Water pump bolts to block
  • 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 106763
  • For .010" connecting rod bearing use 106341
  • For .020" connecting rod bearing use 106765
  • For .030" connecting rod bearing use 106766
  • 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
  • All States Ag Parts Item No. 130632

Sales Tax

We are required by law to charge sales in IA, NE, MO, MN, SD and WI because we have physical locations in each of these states. While most farm use items and items for resale are tax exempt in these states we MUST have a tax exemption certificate on file prior to completing your tax exempt purchase. Please contact us at 866-609-1260 and we can send the proper form to you via fax or email. Once you have completed the sales tax form and returned it to our offices (fax to 515-834-2196 or email to we can remove the sales tax from your order.
Please contact the seller for availability
John Deere
404, 4040, 4230, 6404D, 6600, 6602, 7700
All States Ag Parts
DE SOTO, IA 50069
877-530-4430 View Dealer - Email Dealer


Dealer Information

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