Description
When you’re rebuilding a high-hour diesel engine, having the right bearings makes all the difference between an engine that runs for years and one that knocks itself apart. If your crankshaft has been turned 0.030″ undersize, these main bearings are what you need to get that engine running smooth and strong again.
What You’re Getting
- Complete main bearing set designed specifically for 0.030″ undersize crankshafts
- Proper bearing tab positioning—off-center on top halves, centered on lower halves for correct oil flow
- High-quality bearing material that handles the loads and heat of diesel operation
- Complete kit with all bearings needed for one engine rebuild
Built for Real Farm Work
This bearing set works in John Deere’s workhorse 6-cylinder diesel engines including the 381 CID, 404 CID, and 466 CID powerplants. These are the engines that power everything from mid-size utility tractors to big row-crop machines—the ones that pull planters through tough spring conditions and run combines through long harvest days.
Made to Last
Engine bearings take a beating, especially in diesel applications where compression ratios are high and loads are heavy. These bearings use quality materials and proper clearances to handle the punishment while maintaining oil pressure and protecting your freshly machined crankshaft.
Installation Notes
Make sure your machine shop has turned the crank to the correct 0.030″ undersize dimension before installation. Pay attention to the bearing tab positions during assembly—they’re designed that way for proper oil distribution. A good torque wrench and clean assembly practices are essential for a rebuild that lasts.
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