BMW Connecting Rod Bearing - Genuine BMW 11247841703

Product Information

Specification: 53 mm rod bearing shell, blue.

Rod bearings are a common wear component on BMW S85 and S65 engines. Excessive wear can result in severe engine failure if not replaced in time. Regular inspection and replacement are essential for preserving engine reliability and longevity.

Engine Connecting Rod Bearing
The connecting rod bearing is located between the connecting rod and the crankshaft journal. It ensures smooth crankshaft rotation while reducing friction and wear. These precision bearings are made from layered metals such as copper, lead, or aluminum alloys. They are designed to withstand high loads but act as sacrificial components, wearing out before the crankshaft sustains damage.

Engine Connecting Rod Bearing Failure Symptoms:

• Knocking or tapping noise (“rod knock”): Deep metallic knocking from the engine, particularly noticeable under load or acceleration.
• Low oil pressure: Increased clearance from worn bearings lowers oil pressure.
• Metal shavings in oil: Bearing material may flake off and appear in the engine oil or on the magnetic drain plug.