Description
When your engine starts knocking or you hear that dreaded metal-on-metal sound from deep inside the block, it’s time to check your big end bearings. These critical bearings cushion the connecting rods where they attach to the crankshaft, handling enormous forces with every power stroke. If they’re worn or damaged, you’re looking at expensive engine damage that’ll put your tractor out of commission when you need it most.
What You’re Getting
- Standard size precision bearings that restore proper connecting rod clearances
- Complete pair – both upper and lower bearing shells for one connecting rod
- Quality construction designed to handle the high loads and temperatures in your Cummins B Series engine
- Direct replacement for worn bearings that eliminates knock and restores smooth operation
Built for Heavy-Duty Work
These bearings are engineered specifically for the Cummins B Series engines found in Case IH Maxxum tractors from the 5120 up through the MX170. Whether you’re pulling heavy tillage equipment, running a baler through thick windrows, or pushing hard with a loader, these engines work under serious load. The big end bearings take the brunt of that punishment, converting the explosive power of combustion into smooth rotational force.
Made to Last
Engine bearings operate in one of the harshest environments inside your tractor – high temperatures, constant pressure, and metal-to-metal contact lubricated only by engine oil. These replacement bearings use the same materials and construction as original equipment, with precision-manufactured surfaces that maintain the critical oil film thickness your engine needs for long life.
Installation Notes
Replacing big end bearings is a major engine job that requires removing the oil pan and disconnecting the connecting rods. Check your crankshaft journals for wear and out-of-round conditions before installing new bearings – a damaged crank will destroy new bearings quickly. Always replace bearings in complete sets and torque the connecting rod bolts to specification. It’s also smart to replace the main bearings while you’re in there, since they typically wear at similar rates.
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