SneedSpeed F56 MINI B38/B48 Engine Main Bearing Set

Precision Crankshaft Support. Built for a Reliable Bottom End.

A dependable engine starts with a properly built bottom end. The SneedSpeed Main Bearing Set for MINI B38 and B48 engines delivers the precision fit and dependable crankshaft support required for a quality engine rebuild.

Whether you're restoring a worn engine to factory specifications or building a performance-focused B38 or B48, maintaining proper bearing clearances and consistent lubrication is essential to engine durability.

Designed for MINI's modern three- and four-cylinder engines, these main bearings provide the foundation for smooth crankshaft operation and long-term reliability.

Engineered for Precision and Durability

Precision Crankshaft Support: Maintains the critical oil clearance between the crankshaft journals and engine block to support smooth, reliable operation.
Durable Bearing Construction: Quality bearing materials designed to withstand the repeated loads, temperatures, and operating conditions of modern turbocharged engines.
Consistent Oil Film Control: Properly sized bearings help maintain the hydrodynamic oil film that protects crankshaft journals from metal-to-metal contact.
Direct-Replacement Fitment: Designed for compatible MINI B38 and B48 engine applications without requiring modifications.
Street and Performance Applications: Suitable for factory-specification rebuilds and performance engine builds when properly measured and installed.

Built Right From the Bottom Up

Main bearing clearance is one of the most important measurements in any engine build. Excessive clearance can compromise oil pressure and bearing stability, while insufficient clearance can lead to excessive heat, oil film failure, and premature engine damage.

At SneedSpeed, we believe engine reliability starts with proper machine work, accurate measurements, and quality components.

These main bearings are designed to provide dependable crankshaft support when installed with the correct clearances and proper lubrication.

Vehicle & Engine Compatibility

MINI B38: 1.5L turbocharged three-cylinder engine
MINI B48: 2.0L turbocharged four-cylinder engine
Platform: Compatible F-series MINI applications, including F56 models

Verify engine compatibility and required bearing sizes before ordering.

SneedSpeed Engine Builder's Note

Never assume new bearings automatically provide the correct oil clearance.

Always measure crankshaft journal diameters, inspect the main bearing bores, and verify installed oil clearances before final assembly. Proper bearing selection and accurate measurements are essential to building an engine that lasts.

SneedSpeed — Engineered for Performance. Built for Reliability.