King Engine Bearings MB5778SM SM-Series Main Bearing Set Standard Size

The King Engine Bearings MB5778SM is part of the SM Series featuring the strongest aluminum-based alloy at King, enhanced with manganese and chromium for high-load applications and exceptional wear resistance properties. This OE-replacement bi-metal bearing set includes 5 pairs designed to deliver superior reliability and longevity in demanding engine rebuilds.

Key Features:

• Strengthened aluminum alloy with manganese and chromium (Mn, Cr) additions for maximum load capacity
• Lead-free bearing material prioritizing environmental sustainability and safety
• Traditional steel-backing with aluminum bonding layer and aluminum bearing alloy construction
• Prevents lug-generated oil leaks while achieving better load capacity and oil film distribution
• Manufactured using King's proprietary Bull's Eye Tolerance™ Technology combining highly accurate machining, overplating, and computerized wall thickness monitoring
• Standard size crankshaft main bearing set
• Direct OE replacement for Audi 1.8L/2.0L TSI/TFSI engines

King is the first choice in the extremely demanding aviation and racing industries, with knowledge and experience applied to every aftermarket bearing. These SM-Series main bearings represent the pinnacle of King's engineering for high-performance and high-load applications where inferior bearings simply cannot perform.