Description
When your John Deere tractor starts knocking or showing low oil pressure, the main bearings are often the culprit. These bearings keep your crankshaft spinning smoothly in the engine block, and when they wear out, you’ll know it—that deep knocking sound is hard to miss. This standard bearing set gets your engine back to running right, with the proper clearances John Deere designed into the motor.
What You’re Getting
- Complete bearing set for both 254 CID and 270 CID 4-cylinder diesel engines
- Off-center bearing locating tabs on both halves for proper positioning
- Standard sizing that maintains factory specifications and clearances
- Quality TISCO construction that matches OEM performance standards
- Kit includes all necessary bearings for a complete engine rebuild
Built for Real Farm Work
This bearing set works in John Deere’s reliable 4-cylinder diesel engines found in utility and mid-size row-crop tractors from the ’70s and ’80s. These engines powered a lot of good tractors through long days of fieldwork, from plowing and planting to cultivating and harvest. They’re tough motors, but after decades of use, the main bearings need replacing to keep things running smooth.
Made to Last
TISCO builds these bearings to handle the constant loads and pressures of diesel operation. The bearing material is formulated to work with the oil flow characteristics of these older engines, providing the right balance of durability and lubrication. They’re designed to give you the same service life you got from the original bearings.
Good to Know
This is a standard bearing set, so make sure your crankshaft journals haven’t been ground undersize—if they have, you’ll need undersize bearings instead. The off-center locating tabs are important for proper installation, so don’t force anything if it doesn’t line up right. A good machine shop can measure your crank and tell you exactly what size bearings you need.
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