Premium Connecting Rod Bearing for Cummins 6BT ISB QSB Engines
High-precision bearing crafted from durable copper-lead alloy with a steel backing for extreme load resistance and heat dissipation. Micro-groove surface finish ensures optimal oil retention, reducing friction and extending engine life. Direct replacement for OEM part numbers 3969562, 3939859, and 4000113601. Perfect for Cummins 6BT, ISB, and QSB engines in construction machinery, heavy-duty trucks, and industrial equipment. Globally sourced at unbeatable wholesale prices. Bulk orders available with guaranteed quality and fast shipping. Trusted by professional mechanics for performance-critical applications.