Evergreen MRB8133/0/0 Mazda Ford 2.2L SOHC 12V F2 Crankshaft Main Bearings Connecting Rod Bearings (Standard Size) Fits: Mazda Ford 2.2L SOHC 12V F2 (see description below) High Strength Overlay Plate with Reduced Thickness for Improved Fatigue Properties. Hardened Steel Backs on All Rod Bearings to Improve the Support of the Bearing Lining And Assist with Bearing Retention in the Housing Increased Crush for Improved Bearing Retention. Elimination of Flash Plating on the Back of the Bearings to Improve Heat Transfer Through the Bearings And to Maximize the Grip Between the Bearings and Its Housing Increased Eccentricity to Compensate for Bore Distortion At High Rpm And to Assist in the formation of Hydrodynamic Oil Films. Optimize Bearing Load Carrying Surface Area And Oil Flow to the Conrod Bearings