Engine Main Bearing Set for John Deere 381 and 404 CID 6-Cylinder Diesel Engines

Description

When your John Deere engine starts knocking or you’re hearing that deep rumble that means bearing trouble, it’s time to rebuild those mains before you’re looking at a cracked block or ruined crankshaft. These main bearings are what keep your crankshaft properly positioned and lubricated inside the engine block, and when they start wearing out, everything else suffers. This complete bearing set gets your engine back to running smooth and quiet.

What You’re Getting

• Complete main bearing set with both standard bearings and flanged thrust bearings in one kit
• Proper bearing locating tabs positioned off-center on both halves for correct installation
• Standard size bearings that restore proper clearances without machine work
• Quality materials designed to handle the loads and heat of diesel engine operation
• Direct replacement that fits like the original factory bearings

Built for Heavy-Duty Diesel Work

This bearing set fits John Deere’s 381 cubic inch 6-cylinder diesel engines and select 404 cubic inch engines found in tractors that handle serious farm work. These engines power the machines you depend on for planting, cultivating, harvesting, and daily chores around the farm. Whether you’re pulling heavy implements through tough ground or running a PTO-driven piece of equipment all day, these bearings support the crankshaft that drives everything.

Made to Last

Main bearings work in one of the toughest environments inside your engine – they handle the full power output while dealing with extreme heat and pressure. These bearings are manufactured to meet the same specifications as the original equipment, with proper metallurgy and oil clearances to keep your crankshaft happy for thousands of hours.

Good to Know

This is a complete engine rebuild job that requires removing the engine oil pan and crankshaft. Most farmers tackle this during winter months when the tractor isn’t needed for field work. Make sure to check crankshaft condition and clearances during installation, and always use fresh engine oil and filters when you fire it back up.