King Engine Bearings MB5442MC0.75 Main Bearing Set Ford Duratec Mazda MZR 0.75mm Oversize

The King Engine Bearings MB5442MC0.75 is an OE-replacement main bearing set engineered for Ford Duratec and Mazda L3/L3-VDT MZR engines in 2.0L, 2.3L, and 2.5L displacements. This advanced bearing set features King's innovative MC (Metal Coated) technology, designed to meet the demands of modern engine operation including start-stop systems and high-load conditions.

Advanced MC Technology:

• Bi-metal construction with steel backing and strengthened aluminum alloy substrate
• K-340 nano-composite polymer coating providing superior anti-friction and wear resistance properties
• Coating applied with 5-10 microns thickness during the manufacturing process
• Especially suitable for start-stop and hybrid engines operating under metal-to-metal contact
• Enhanced durability for engines with decreasing oil film thickness and higher cylinder pressures

King Performance Features:

• Bull's Eye tolerance with wall thickness tolerances maintained at ±0.0001 inch
• Enlarged, chamfered oil holes for improved lubrication
• Medium eccentricity for optimum load distribution
• Complete 5-pair main bearing set
• Size: 0.75mm oversize for engines with crankshaft wear or machining

King Engine Bearings has been a bearing specialist since 1960, manufacturing all bearings in-house from concept to final product. Every bearing undergoes rigorous quality control to ensure it meets the exacting standards required for automotive, racing, and performance applications.