MAHLE CB-743HN-10 H-Series Connecting Rod Bearing Undersize Narrowed - 010

The MAHLE CB-743HN-10 is a high-performance H-Series tri-metal connecting rod bearing designed for demanding racing and performance applications. This bearing features a .010 inch undersize specification and narrowed design for use with aftermarket crankshafts that have larger fillet radii.

Advanced Tri-Metal Construction:

• Electroplated babbitt outer surface layer for reduced friction and improved efficiency
• Copper-lead alloy intermediate layer for superior fatigue strength
• Precision hardened steel backing for dimensional accuracy and strength
• Capable of handling maximum loads up to 12,000 PSI

Performance Features:

• Medium level of eccentricity optimized for high-RPM operation
• High crush design ensures superior bearing retention and seating
• Thin overlay construction reduces drag and increases horsepower
• Enlarged chamfers provide greater crankshaft fillet clearance
• Unplated steel backing for better bore contact and dimensional accuracy
• Precision wall tolerance of +/- .00015 inches

H-Series bearings were originally developed for NASCAR racing applications but are suitable for all types of competition engines. The narrowed design accommodates performance crankshafts with oversize fillets, while the .010 undersize provides standard clearance when used with .010 undersize crankshaft journals. Whether building a race engine from the ground up or modifying a stock engine for performance, MAHLE Clevite H-Series bearings deliver proven reliability and championship-winning performance.