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: 4B8171HX Bearing size: STD Bearing half type: Identical halves Bearing material: F781 Technical data (mm) Max overall length: 17 Max shaft size: 52 Max tunnel size: 55.034 Max vertical oil clearance: 0.088 Max wall at crown: 1.487 Min shaft size: 51.98 Min tunnel size: 55.021 Min vertical oil clearance: 0.036 Technical data (in) Max overall length: 0.6693 Max shaft size: 2.0472 Max tunnel size: 2.1667 Max vertical oil clearance: 0.00346456 Max wall at crown: 0.0585 Min shaft size: 2.0465 Min tunnel size: 2.1662 Min vertical oil clearance: 0.00141732 Engine code 2.0L Ecoboost / 2.3L Ecoboost / L3-VDT Application Ford 1999cc (2.0L) Ecoboost Inline4 DO