Description
When your Perkins engine starts knocking or you notice oil pressure dropping, worn connecting rod bearings are usually the culprit. These oversized big end bearings are precisely what you need when your crankshaft has been turned 20 thousandths to restore proper clearances. If you’ve ever heard that telltale rod knock that makes your heart sink, you know it’s time for an engine rebuild – and using the right oversized bearings is critical for bringing that engine back to life.
What You’re Getting
- 20 thousandths (.020″) oversized bearings designed for turned crankshafts
- High-quality construction that handles the stress and heat of diesel operation
- Proper oil clearances restore lubrication and reduce noise
- Direct replacement for original equipment specifications
- Precise dimensions ensure proper fit with machined crankshaft journals
Built for Real Farm Work
These bearings work with the legendary Perkins A4.212, A4.236, T4.236, AT4.236, and A4.248 engines that power countless Massey Ferguson, Landini, and Same tractors across farms everywhere. From the reliable MF 165 running hay equipment to the powerful 390 pulling heavy implements, these engines have been the backbone of agriculture for decades. Whether you’re cultivating, harvesting, or handling livestock, a properly rebuilt engine with the right oversized bearings keeps you working when the crops won’t wait.
Made to Last
Connecting rod bearings take tremendous abuse – they support the piston’s explosive power while spinning thousands of RPM under load. These bearings are manufactured to strict tolerances using materials designed for the oil temperatures and pressures found in working diesel engines. When installed with a properly machined crankshaft, they’ll provide the oil film protection your engine needs for thousands more hours of reliable service.
Installation Notes
These are oversized bearings, so your crankshaft must be turned 20 thousandths (.020″) for proper fit. Using oversized bearings on a standard crankshaft will cause immediate failure, while standard bearings on a turned crank won’t provide adequate oil pressure. Always verify your crankshaft measurements and journal condition before ordering. When installing, torque rod bolts to specification and check bearing clearances with Plastigage to ensure proper fit.
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