Steeda Speedometer Hole Plug for 1999-2004 Mustangs with a TKO500 or TKO600 Transmission.
Steeda’s speedometer plug covers up the mechanical speedometer gear access hole in the new TKO500 and TKO600 transmissions so they can be used on 1999-2004 Mustangs with electronic speedometer pickups.
The new TKO transmissions are equipped with dual speedometer pickups, to work with either electronic or mechanical speedometer pickups. A plug is required to cover the mechanical access hole if it is not being used. The plug also fits most common Ford transmissions such as T-5 and T-45, for use on race cars without speedometers.