King Engine Bearings MB7039XPCSTDX Main Bearing Set BMW - M20 M50 2.0L 2.5L 2.7L

The King Engine Bearings MB7039XPC STDX is a standard-size main bearing set engineered for BMW M20 and M50 inline-six engines, covering 2.0L, 2.5L, and 2.7L displacements. King's XPC (eXtra Performance Coating) line features a proprietary polymer coating applied over a tri-metal bearing construction, delivering exceptional wear resistance, superior conformability, and outstanding performance under high-load conditions.

Key Features:

• XPC Polymer Coating: King's advanced polymer overlay reduces friction and improves break-in characteristics, extending bearing life in both street and performance applications
• Tri-Metal Construction: Steel-backed design with a copper-lead or aluminum alloy intermediate layer topped with a performance overlay for maximum load capacity and fatigue strength
• Standard Size (STDX): Direct OEM replacement dimensions — no crankshaft machining required for standard journals
• High Crush Design: Precision-engineered housing bore interference ensures secure bearing retention and optimal heat transfer to the block
• Tighter Tolerances: Manufactured to tighter-than-OEM specifications for improved oil film maintenance and reduced bearing-to-journal clearance variation
• Complete Set: Includes all main bearings required for a full engine rebuild on BMW M20 and M50 engines

King Engine Bearings is a globally recognized OEM and aftermarket bearing supplier known for supplying bearings to professional motorsport teams and engine builders worldwide. The MB7039XPC STDX is an ideal choice for enthusiasts performing a full engine refresh, rebuild, or performance upgrade on BMW M20 and M50 powered vehicles.