Description

When your John Deere diesel starts knocking or you’re hearing that telltale rattling that means main bearing trouble, it’s time for an engine rebuild. This .010 oversize bearing set gets your engine back to tight tolerances and smooth operation, whether you’re rebuilding a 254 CID or 270 CID four-cylinder powerplant. These bearings are what you need when the crankshaft journals have been turned .010 inch oversize during machining.

What You’re Getting

Complete main bearing set with both upper and lower halves for a full rebuild
Precision .010 inch oversize dimensions to match your machined crankshaft
Off-center bearing locating tabs on both halves for proper positioning and oil flow
Quality construction that meets John Deere specifications for durability and performance

Built for Real Diesel Work

This bearing set fits John Deere’s workhorse diesel engines found in tractors and industrial equipment from the era when these 254 and 270 cubic inch engines were powering farms across the country. These four-cylinder diesels were known for their reliability and fuel efficiency, and with proper bearings, they’ll keep running for decades more.

Made to Last

Engine bearings work in some of the toughest conditions inside your motor—high temperatures, constant pressure, and thousands of RPM. These bearings are manufactured to handle those demands with proper clearances and oil film strength that keep your crankshaft supported and protected during long days of field work or heavy pulling.

Good to Know

This is a rebuild job that requires machine work on your crankshaft journals to achieve the .010 oversize dimension. Make sure your machine shop checks all clearances and journal finish before assembly. During installation, keep everything clean and follow proper torque specs—contamination or improper assembly can ruin a fresh rebuild quickly.