King Engine Bearings MB 769AM0.25 AM-Series Main Bearing Set 0.25mm Undersize

King Engine Bearings MB 769AM0.25 is a precision-engineered main bearing set from the AM-Series line, designed for OE replacement in street and marine applications. This set features a 0.25mm undersize specification, commonly used during engine rebuilds when crankshafts have been machined for wear or damage.

Key Features:

• AM-Series bi-metal aluminum construction with lead-free materials for environmental safety
• Standard aluminum-based material (K-783 equivalent) optimized for low to medium load engines
• Superior embeddability to reduce scratching of crankshaft journals
• Precision tolerance control to within ±0.0001 inch for optimal fit and performance
• Half-groove design for efficient oil distribution
• Manufactured with advanced materials and quality control processes

King AM-Series bearings are specifically recommended for street or marine applications, providing reliable performance in passenger car engines. King Engine Bearings was founded in 1960 with one objective: to supply the highest quality bearings available, and continues to specialize exclusively in engine bearing manufacturing for superior quality and precision.