King Engine Bearings MB5851MC0.25 Main Bearing Set for Mitsubishi 4N15 +0.25mm Oversize

The King Engine Bearings MB5851MC0.25 is an OE-replacement main bearing set designed for the Mitsubishi 4N15 engine, available in a +0.25mm oversize to accommodate reground or worn crankshafts. This set includes 5 pairs of main bearings engineered to restore factory-spec performance and clearances.

King's MB Series bearings are constructed using a bi-metal aluminum-based material — a lead-free composite well-suited for low to heavy load passenger car and light truck engines. A factory-applied nano-composite polymer coating is added with no increase in overall bearing thickness, improving wear resistance and compatibility with modern engine oils including those used in start-stop and hybrid applications.

Key Features:

• OE-replacement main bearing set for the Mitsubishi 4N15 engine
• +0.25mm oversize — for use with reground crankshafts
• Bi-metal aluminum-based construction — lead-free and environmentally safe
• Factory-applied nano-composite polymer coating with no added thickness
• Designed for low to heavy load engine applications
• Compatible with start-stop and hybrid engine systems
• Manufactured by King Engine Bearings, a bearing specialist since 1960

King Engine Bearings has been a trusted name in engine bearing manufacturing since 1960, offering a comprehensive range of bearings for automotive, light and heavy-duty truck, marine, and performance applications. The MB5851MC0.25 is part of a full size family — also available in Standard and +0.50mm oversizes.