When you start hearing that dreaded knocking sound from your engine, chances are good it’s time for new big end bearings. These connecting rod bearings take the worst pounding of any component in your engine, handling the explosive force of combustion while spinning thousands of times per minute. If that knock gets worse under load or you’re noticing metal shavings in your oil, don’t wait—replacing these bearings now can save your crankshaft and connecting rods from catastrophic damage.
What You’re Getting
- Precision-manufactured bearings built to handle the high loads of diesel engine operation
- 30 thousandths oversize dimension provides proper clearance for worn crankshafts
- Quality construction that matches original Perkins specifications for reliable performance
- Direct replacement design that fits properly without modifications or special tools
Built for Real Farm Work
These bearings handle the demanding work cycles of farm tractors—from long days of heavy tillage to the constant start-stop operation of loader work around the farmyard. Whether you’re running a Massey Ferguson through tough field conditions or using your Landini for heavy implement work, proper big end bearings keep your engine’s power flowing smoothly to the ground where you need it.
Made to Last
Engine bearings face extreme conditions—high temperatures, heavy loads, and the constant pounding of diesel combustion. These bearings are manufactured to tight tolerances with materials designed to handle the thermal cycling and pressure loads that destroy inferior parts. The 30 thou oversize specification allows for proper oil clearance on slightly worn crankshafts, extending engine life.
Good to Know
Installing big end bearings requires removing the oil pan and disconnecting the connecting rods—definitely an engine-out or major teardown job. Always check crankshaft journals for wear and proper finish before installing new bearings. If you’re doing one bearing, it’s smart to replace them all since they wear at similar rates. Proper torque specifications are critical for bearing life, so don’t guess.
