Steeda Mustang Speedometer Recalibration Gear-Automatic-7 Tooth 4.10 Ratio 23 Speedo-83-98 10205S A custom CAD designed roto-molded

A custom CAD designed roto-molded housing made from heat resistant material eliminates the use of multiple components and ensures the coolest air intake charge available

Hedman's 3-Bolt flange hedder reducers are for use with Hedman Hedders fitted with 3-bolt gasketed collectors

Flexible legs - the legs of the FLEX have the padding molded in eliminating the need for additional pads

This is a replacement kit for the crankcase ventilation hose connection included with chrome air cleaners #1207/#1221 and aluminum air cleaners #4207/#4221

Does not fit AODE/4R70W transmission

Steeda Mustang Speedometer Recalibration Gear-Automatic-7 Tooth 4.10 Ratio 23 Speedo-83-98 10205S A custom CAD designed roto-moldedMustang Speedometer Recalibration Gear Automatic 7 Tooth 4. 10 Ratio 23 Speedo 83 89 Fits 1983 1989 Ford Mustang with Automatic Transmissions. Once you change the gears in your differential, you need a new speedometer gear to recalibrate your speedometer. They're inexpensive, and only take a few minutes to change. Note transmission type, model and resulting drive gear. Cross reference with your rear end gear ratio to find the correct "recalibration"