Speedo Drive Gear GM 17 Tooth Red

The Speedo Drive Gear GM 17 Tooth Red is a precision speedometer drive component engineered for General Motors vehicles requiring accurate transmission output shaft engagement. This small but critical gear transfers rotational speed data from the transmission to your vehicle's speedometer mechanism, making it an essential component for any restoration, repair, or modification project where speedometer accuracy is non-negotiable. Whether you're rebuilding a classic muscle car, swapping transmissions, or correcting speedometer calibration issues, this TCI-manufactured gear ensures your speed readout matches actual vehicle velocity.

The 17-tooth configuration is specifically designed for GM speedometer drive systems and works in tandem with the corresponding driven gear to produce the correct gear ratio for accurate speed calculation. The red color aids in visual identification during transmission assembly, reducing installation errors during complex rebuild operations. Constructed to OEM specifications, this gear delivers reliable, repeatable speedometer function without slippage or premature wear, even under high-RPM driving conditions or with aftermarket transmission modifications. The compact design—measuring just 3.5 inches in length—fits seamlessly into your transmission housing without requiring additional modifications.

This component is ideal for mechanics and enthusiasts performing transmission swaps between different GM model years, where speedometer calibration often requires gear ratio adjustments. If you've installed a non-original transmission, shifted to a different final drive ratio, or are correcting a speedo that reads consistently high or low, the correct tooth count is critical for accurate readings. Installation requires transmission removal and basic mechanical competency; most shop manuals provide clear guidance on speedo drive gear access and replacement, making this a manageable DIY task for experienced builders.