King Engine Bearings MB4558MC0.25 Main Bearing Set Oversize - 0.25mm

The King Engine Bearings MB4558MC0.25 is a precision-engineered main bearing set designed for demanding engine rebuilds and high-performance applications. This set features 0.25mm oversize bearings, making it ideal for engines with worn crankshaft journals that require machining.

Key Features:

• pMax Black tri-metal construction with advanced polymer coating for enhanced wear resistance
• 0.25mm oversize dimensions for use with machined crankshafts
• Precision tolerances ensure optimal oil clearance and bearing crush
• High-strength steel backing with aluminum-tin overlay
• Engineered for superior fatigue resistance and load-bearing capacity
• Compatible with conventional and synthetic motor oils

King Engine Bearings are manufactured to OEM specifications and are trusted by professional engine builders and performance enthusiasts worldwide. The pMax Black polymer coating provides exceptional protection during startup and reduces friction for improved engine longevity.