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Reviews 1-2 of 2
Speedometer - Driven Gear - 21 Tooth - C-4 / C-6 / FMX / 3 Spd Manual - Repro ~ 1967 - 1973 Mercury Cougar / 1967 - 1973 Ford Mustang 1967,1967 cougar,1968,1968 cougar,1969,1969 cougar,1970,1970 cougar,1971,1971 cougar,1972,1972 cougar,1973,1973 cougar,automatic,c7w,c8w,c9w,cougar,d0w,d1w,d2w,d3w,fmx,gear,gears,manual,mercury,mercury cougar,new,repro,reproduction,spd,speedometer,tooth,trans,21,1967,1967 mustang,1968,1968 mustang,1969,1969 mustang,1970,1970 mustang,1971,1971 mustang,1972,1972 mustang,1973,1973 mustang,C7Z,C8Z,C9Z,D0Z,D1Z,D2Z,D3Z,ford,ford mustang,mustang,14349

Speedometer - Driven Gear - 21 Tooth - C-4 / C-6 / FMX / 3 Spd Manual - Repro ~ 1967 - 1973 Mercury Cougar / 1967 - 1973 Ford Mustang
Item #: 14349

4.50 stars, based on 2 reviews
Made out of Nylon. Please confirm teeth count and direction of teeth. Color codes do not guarantee direct replacement. 4 speed Toploaders have reversed tooth direction. Click here to use our Speedometer Gear Calculator. Available in 16, 17, 18, 19,...
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Speedometer - Driven Gear - 21 Tooth - C-4 / C-6 / FMX / 3 Spd Manual - Repro ~ 1967 - 1973 Mercury Cougar / 1967 - 1973 Ford Mustang
Customer since 2022
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Pros:
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21 tooth driven gear for C4 trans

Following your calculations this gear resulted in a Stewart Warner Wings speedometer being fast by 10 to 11%.
Speedometer - Driven Gear - 21 Tooth - C-4 / C-6 / FMX / 3 Spd Manual - Repro ~ 1967 - 1973 Mercury Cougar / 1967 - 1973 Ford Mustang
Customer since 2019
Material:
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Fit:
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Craftsmanship:
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Pros:
  • Got me real close to correct
Cons:

Fits Mustang also

Using the WCCC speedometer calculator this one was the closest gear that I could find, at 65 GPS speed my speedo shows 63, so I am on the safe side of wrong. Thanks for the calculator and the gear.
Reviews 1-2 of 2
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