King Engine Bearings CR4528SM0.5 Connecting Rod Bearing Set +0.5mm Undersize BMW N42 B20 N46 B20

The King Engine Bearings CR4528SM0.5 is an OE-replacement bi-metal connecting rod bearing set designed for BMW N42 B20 and N46 B20 engines. This set includes 4 pairs of connecting rod bearings and is sized at +0.50mm undersize, making it the correct choice when crankshaft journals have been ground to that specification during an engine rebuild.

This bearing set is part of King's SM Series (ManganX™), which features the strongest aluminum-based alloy in the King lineup. The alloy is reinforced with the addition of Manganese and Chromium (Mn, Cr), delivering exceptional performance in high-load engine applications. The bi-metal construction consists of a steel backing with the ManganX™ aluminum alloy bearing surface, and is completely lead-free for environmental compliance.

Key Features:

• ManganX™ SM Series Material — King's strongest aluminum-based alloy, strengthened with Manganese and Chromium for high-load applications
• Bi-Metal Construction — Steel-backed with a lead-free aluminum alloy bearing surface
• +0.50mm Undersize — Engineered for use with crankshaft journals ground to 0.50mm undersize
• 4 Pairs Included — Complete connecting rod bearing set for the full engine
• Bull's Eye Tolerance™ Technology — King's proprietary precision manufacturing process combines highly accurate machining, overplating, and computerized wall thickness monitoring for tighter shell-to-shell consistency than industry standard
• OE-Replacement Specification — Drop-in replacement engineered to meet or exceed original equipment standards
• Lead-Free Formulation — Environmentally safe composite bearing material

King Engine Bearings has specialized exclusively in engine bearings since 1960, and their focus on a single product category results in consistently high quality and precision. The CR4528SM series is available in standard and multiple undersize options to accommodate various crankshaft grinding specifications.