ACL Bearings 4B1510H-STD High Performance Rod Bearing Set for BMW B46/B48 Engines

The ACL Bearings 4B1510H-STD is a complete high-performance connecting rod bearing set engineered specifically for BMW B46 and B48 2.0L turbocharged engines, as well as MINI F55/F56/F57 models equipped with these powerplants. This Race Series bearing set represents a significant upgrade over OEM bearings, designed to address the rod bearing wear issues common in these BMW platforms while providing enhanced durability for high-performance and spirited driving applications.

Key Features:

• ACL Duraglide tri-metal copper-lead construction for superior strength and durability
• High-strength overlay plate with increased thickness for improved oil film retention during high-RPM operation
• Hardened steel backing on all rod bearings for enhanced support and housing retention
• Increased crush design for improved bearing retention in the housing
• No tin flash plating on bearing backs to maximize heat transfer and bearing-to-housing grip
• Increased eccentricity to compensate for bore distortion at high RPM and assist in hydrodynamic oil film formation
• Standard size bearings maintain factory tolerances for easy installation
• Complete set includes upper and lower bearing shells for all connecting rods

ACL Race Series bearings are precision-engineered to withstand higher loads and RPM conditions than standard bearings, making them an ideal choice for performance builds, engine rebuilds, or preventative maintenance on high-mileage BMW turbo four-cylinder engines. These bearings are manufactured to tight tolerances and designed to provide maximum performance and extended service life while maintaining pre-set factory clearances.