Decoding a Ford/Visteon Differential Cover Tag Plant cdde Gear Ratio: Ring Gear Diameter: Date Code (3.55:1) Non-"Locking" 3.3" 0 2000 A "L" between the numbers March indicates Traction-Lek (3rd Month) (Le. 3L55) 16 : Day ofMonth developed by: Metroplex ([email protected])