King Engine Bearings MB5013XP 020 Crankshaft Main Bearing Set GM LS Vortec

The King Engine Bearings MB5013XP 020 is a high-performance crankshaft main bearing set engineered specifically for GM Vortec and LS-Series Gen III and Gen IV engines. These race-grade bearings feature King's advanced pMax Black coating, a proprietary polymer coating that provides exceptional protection during engine start-up and extreme operating conditions.

Key Features:

• pMax Black polymer coating for superior protection and reduced friction
• Tri-metal construction combining aluminum alloy, nickel barrier, and overlay for maximum durability
• Race-grade design for high-performance and racing applications
• 0.020" oversize for precision fitment on machined crankshafts
• Engineered for GM LS-Series Gen III and Gen IV engines including LS1, LS2, LS3, LS6, LS7, and Vortec variants
• Precision manufactured to strict tolerances for optimal oil clearance

King Engine Bearings are trusted by professional engine builders and racers worldwide for their quality, consistency, and performance. The pMax Black coating technology provides a dry-film lubricant that protects bearing surfaces during initial break-in and prevents metal-to-metal contact during high-load conditions. This complete main bearing set includes all bearings necessary for a complete crankshaft installation.