Home Fifth Gen Mustang 2007 Ford Mustang 2007 Ford Mustang Axle Information & Ratios Axle code on B pillar Ratio & type BG 3.31 Conventional differential Std. on V6 Mustangs CD 3.55 Locking differential Std. w/ manual transmission CG 3.31 Locking differential manditory on GT Automatics CB 3.73 Locking optional with manual transmissions
This list is incorrect. The CD was an optional axle, and was not “standard” on the 2007 manual transmission GT mustangs. The 3.31 code “CG”, was the standard differential setup for manual transmission GT, 4.6l mustangs in 2007.