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AOD
The AOD (for automatic overdrive) is a four-speed automatic transmission with overdrive. Introduced in 1980, it was Ford's first four-speed automatic overdrive transmission. The gearset design is based on the Ford "X" automatic transmissions used during the 1950s, 60s and 70s. The AOD replaced many of Ford's older transmissions such as the C4, C5 and light duty applications of the FMX.
