King Engine Bearings MB 474AM0.75 OE-Replacement Main Bearing Set +0.75mm Oversize

The King Engine Bearings MB 474AM0.75 is an OE-replacement main bearing set designed for Mazda JE-series engines including the JE06, JE27, JE39, and JE48. This set is manufactured in the +0.75mm oversize to accommodate reground crankshafts during engine rebuilds, ensuring proper oil clearance and a precision fit.

AM-Series Bi-Metal Construction:

This bearing set uses King's AM-Series bi-metal aluminum construction, equivalent to SAE-783 specification. AM-Series bearings are the standard aluminum-based material recommended for street and marine low-to-medium load applications. The aluminum alloy composition delivers superior embeddability, helping the bearing absorb macro-particles from the oil stream and reducing the risk of crank journal scratching or overlay damage.

Key Features:

• AM-Series Bi-Metal (Aluminum): SAE-783 equivalent material for low and medium load engines
• +0.75mm Oversize: Designed for use with crankshafts that have been reground 0.75mm undersize
• Lead-Free Design: 100% lead-free aluminum construction, environmentally friendly and user-safe
• Bull's Eye Tolerance™ Technology: Precision wall thickness control to +/- .0001" for consistent oil clearance
• Superior Embeddability: Absorbs contaminant particles, protecting crankshaft journals from wear and scratching
• OE-Replacement Quality: Designed to meet or exceed original equipment specifications

King Engine Bearings has been a specialist manufacturer of engine bearings since 1960, supplying bearings for automotive, marine, aviation, and power generation applications. Every bearing passes rigorous quality control checkpoints throughout the manufacturing process to ensure consistent performance and reliability.