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: 6B2639HX Bearing size: STD Bearing half type: Identical halves Bearing material: F781 Technical data (mm) Max overall length: 17 Max shaft size: 53.974 Max tunnel size: 57.013 Max vertical oil clearance: 0.094 Max wall at crown: 1.495 Min shaft size: 53.962 Min tunnel size: 57 Min vertical oil clearance: 0.047 Technical data (in) Max overall length: 0.6693 Max shaft size: 2.125 Max tunnel size: 2.2446 Max vertical oil clearance: 0.00370078 Max wall at crown: 0.0589 Min shaft size: 2.1245 Min tunnel size: 2.2441 Min vertical oil clearance: 0.00185039 Engine code VQ35HR / VQ37VHR / VR30DDTT Application Nissan VQ35HR 3498cc V6 DOHC 4v Nissan VQ37VHR 36