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: 4B8351HX Bearing size: STD Bearing half type: Identical halves Bearing material: F781 Technical data (mm) Max overall length: 17 Max shaft size: 44.956 Max tunnel size: 48.016 Max vertical oil clearance: 0.088 Max wall at crown: 1.502 Min shaft size: 44.94 Min tunnel size: 48 Min vertical oil clearance: 0.036 Technical data (in) Max overall length: 0.669290006 Max shaft size: 1.769917736 Max tunnel size: 1.890389937 Max vertical oil clearance: 0.00346456 Max wall at crown: 0.059133741 Min shaft size: 1.769287816 Min tunnel size: 1.889760017 Min vertical oil clearance: 0.00141732 Engine code ZMD / A5D / B6 / BP / B6-2E/B6-ME / B6D / B6F / B6T / BJ /