Description

The Cummins Connecting Rod Bearing 3901431 (0.25 mm / .010” Oversize) is a precision-engineered oversize rod bearing designed for Cummins 6CTA and 6CTAA 8.3 diesel engines using piston 9247 . This bearing is used when the connecting rod or crankshaft journal has been machined to correct wear, restoring proper oil clearance and reliable crankshaft support. Manufactured to OEM specifications , these .010” oversize Cummins rod bearings are produced from high-quality bearing materials that provide excellent load-carrying capacity, fatigue resistance, and consistent lubrication under heavy-duty operating conditions. Correct oversize bearing selection is essential for maintaining stable oil pressure, reducing friction, and preventing premature engine damage. The Cummins 3901431 connecting rod bearing is commonly installed during engine overhauls, in-frame rebuilds, and bottom-end repairs where standard bearings are no longer suitable. When paired with a properly machined crankshaft, this oversize bearing helps restore factory-level performance and long service life. This rod bearing set is ideal for professional engine builders, diesel repair facilities, and fleet maintenance programs servicing Cummins 8.3L engines.