BMW Connecting Rod Bearing - Genuine BMW 11247841702

Product Information

Specification: 53 mm rod bearing shell, red.

Rod bearings are a critical wear component on BMW S85 and S65 engines. Excessive rod bearing wear can lead to catastrophic engine damage if not addressed promptly. Replacement at the first signs of wear is essential for preserving engine life and performance.

Engine Connecting Rod Bearing
The connecting rod bearing sits between the connecting rod and the crankshaft journal, allowing smooth rotation while minimizing friction and wear. These precision bearings are constructed from layered metals such as copper, lead, or aluminum alloys, designed to withstand high loads while being sacrificial — wearing before the crankshaft does.

Engine Connecting Rod Bearing Failure Symptoms:

• Knocking or tapping noise (“rod knock”): A deep metallic sound from the engine, especially under load or acceleration.
• Low oil pressure: Excess clearance from worn bearings reduces oil pressure.
• Metal shavings in oil: Bearing material can flake off and appear in the oil or collect on the magnetic drain plug.