King Engine Bearings MB7781SM0.25 BMW N57 Main Bearing Set, 0.25 mm Oversize

We are bearing specialists. King Engine Bearings was founded in 1960 with one simple objective: to supply the highest quality bearings available in the marketplace. By specializing in engine bearings, King has built an extensive product offering that incl bimetal (strengthened aluminum)

• Lead Free Enviromentally Safe Composite
• Manganx Strengthened Aluminium
• Bi-metal Aluminum Material

King Engine Bearings MB7781SM0.25 is a precision-engineered main bearing set designed for compatible BMW N57 diesel engines. This automotive replacement bearing set is manufactured by King Engine Bearings, a specialist founded in 1960 with a focus on supplying high-quality engine bearings for demanding applications.

The MB7781SM0.25 uses a bi-metal, aluminum-based construction strengthened with manganese to provide dependable durability and load-bearing performance. Its lead-free composite design offers an environmentally safer material solution while supporting reliable crankshaft operation in properly prepared engine assemblies. This set is intended for applications requiring a 0.25 mm oversize main bearing and should be matched to crankshaft journal measurements and the manufacturer’s service specifications before installation.

Designed for select BMW N57 D30 A, B, and C variants, as well as N57N and N57S engines, the King Engine Bearings MB7781SM0.25 helps restore proper main bearing clearances during engine rebuilding or overhaul work. Always verify engine code, bearing grade, crankshaft condition, and required oversize before ordering. Professional installation and accurate clearance measurement are recommended.

What's Included

• One King Engine Bearings MB7781SM0.25 main bearing set
• Bi-metal aluminum main bearing components

Fitment

Compatible with select BMW N57 D30 A, N57 D30 B, N57 D30 C, N57N, and N57S engine applications when a 0.25 mm oversize main bearing is specified. Confirm exact vehicle and engine fitment before installation.

Features:

• Bi-metal aluminum construction for dependable engine bearing performance
• Manganese-strengthened aluminum material supports durability under operating loads
• Lead-free environmentally safer composite design
• 0.25 mm oversize main bearing set for compatible BMW N57 engine rebuilds

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1