The Ford C6 is a heavy-duty automatic transmission built by Ford Motor Company between 1966 and 1996. Compared to its predecessor MX transmission, the C6 offered lower weight, complexity, and parasitic power loss and greater torque capacity for larger engines, without exceeding the packaging dimensions of the MX. These design goals were in line with those of the C4 for smaller engines.
To cut down on weight and cost, the C6 featured a simple, three speed Simpson planetary gearset as well as over 10 lb (4.5 kg) of powdered metal. To aid in shift quality and long time durability, it was the first automatic transmission designed to use the Borg-Warner flexible shift band.
The C6 was used in trucks and cars with larger engines.