ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers. Bearing data Part number: 4B2903H Bearing size: STD Bearing half type: Identical halves Bearing material: F781 Technical data (mm) Max overall length: 16.25 Max shaft size: 44.008 Max tunnel size: 47.02 Max vertical oil clearance: 0.066 Max wall at crown: 1.489 Min shaft size: 43.992 Min tunnel size: 47 Min vertical oil clearance: 0.014 Technical data (in) Max overall length: 0.6398 Max shaft size: 1.7326 Max tunnel size: 1.8512 Max vertical oil clearance: 0.0026 Max wall at crown: 0.0586 Min shaft size: 1.732 Min tunnel size: 1.8504 Min vertical oil clearance: 0.0006 Engine code W10B16 Application Mini W10B16 1598cc Inline4 SOHC 4v