King Engine Bearings MB 544AM0.25 Main Bearing Set BMW M10B15/M10B18/M10B20 +0.25mm Oversize

The King Engine Bearings MB 544AM0.25 is a complete crankshaft main bearing set designed for BMW M10-series four-cylinder engines, including the M10B15, M10B18, and M10B20 variants. This set is supplied in a +0.25mm oversize specification, making it ideal for engines that have undergone crankshaft grinding or reconditioning.

This bearing set belongs to King's AM Series — an aluminum-based bimetal construction engineered as a direct OE replacement. The AM Series uses King's standard aluminum-based material, the softest bimetal in their lineup, well-suited for passenger car engines operating under low to medium load conditions.

Key Features:

• Bimetal construction with aluminum base material for excellent conformability and embeddability
• +0.25mm oversize (0.010") for use with reground crankshafts
• Complete main bearing set — includes 5 pairs to cover all main journal positions
• OE-replacement quality meeting or exceeding original BMW specifications
• Precision-engineered to tight dimensional tolerances for proper oil clearance
• Manufactured in Israel by King Engine Bearings, a specialist bearing producer since 1960

King Engine Bearings has been a dedicated engine bearing specialist since 1960, offering an extensive catalog covering automotive, light and heavy-duty truck, marine, aviation, and standby power applications. The MB 544AM0.25 is a trusted choice for engine builders performing BMW M10 rebuilds requiring an undersized crankshaft replacement bearing.