Description

This rod bearing set (0.25 mm oversize) is a precision-engineered replacement part designed for heavy-duty diesel engines using OEM part numbers 3901173 and 3901175 . Oversize rod bearings are required when the crankshaft journal has been machined, ensuring correct oil clearance and smooth engine operation during rebuilds. Manufactured from high-strength, wear-resistant bearing alloys , these connecting rod bearings provide excellent load capacity, heat resistance, and consistent lubrication under extreme diesel operating conditions. The 0.25 mm oversize ensures proper fitment on reground crankshafts, preventing metal-to-metal contact, oil pressure loss, and premature engine failure. This 4-piece rod bearing set is ideal for professional diesel engine rebuilds, in-frame overhauls, and long-term reliability upgrades. It helps restore factory-level performance while protecting critical rotating components. Key Benefits: Oversize 0.25 mm rod bearing set OEM replacement for 3901173 / 3901175 Designed for machined crankshaft journals Maintains correct oil clearance and pressure Reduces friction, vibration, and bearing wear Suitable for heavy-duty diesel rebuild applications