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, 20, 21, and 23 tooth*. Replaces Ford Part: C0DZ-17271-A, C0DZ-17271-B, C0DZ-17271-C, C0DZ-17271-D, C0DD-17271-A, C1DZ-17271-A * - 23 tooth gears are not a Ford part and only have a life expectancy of 25,000 miles. They also have been reported to...