Description
When you’re rebuilding a diesel engine that’s seen thousands of hours of hard work, you need parts that’ll go the distance. This .020 oversize rod bearing kit is what you reach for when the crankshaft journals have worn beyond standard specs—it gives you a fresh start with proper clearances and oil flow that keeps everything running smooth.
What You’re Getting
- Complete set of oversize bearings designed for .020 crankshaft grinding
- Precision-engineered to restore proper oil clearances after crankshaft machining
- High-quality bearing material that handles the heat and pressure of diesel operation
- One complete kit services all six cylinders in your A401D, 451D, or A451BD engine
Built for Heavy-Duty Diesel Work
This bearing kit fits the A401D, 451D, and A451BD 6-cylinder diesel engines, including the turbocharged A451BD. These are serious workhorses found in industrial equipment, generators, and heavy machinery that run long hours under load. When you’re doing a proper rebuild on one of these engines, this kit gets you back to factory specifications.
Made to Last
Diesel engines are tough on rod bearings—they deal with higher compression, more heat, and heavier loads than gas engines. These bearings are built with materials and coatings that stand up to diesel duty, providing the wear resistance and heat dissipation you need for reliable operation.
Installation Notes
This is a .020 oversize kit, which means your crankshaft needs to be turned .020 under by a qualified machine shop first. Make sure to check your rod journals carefully and have them polished to the proper finish before assembly. Proper torque specs and assembly lube are critical for long bearing life.






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