Description

The product is a Muncie Rockcrusher Speedometer Drive Gear designed for a 32 spline input shaft with 8 teeth and a 1.84-inch outer diameter. It is a genuine General Motors (GM) part with the manufacturer part number 3978758. This drive gear is specifically made for manual transmission systems, particularly Muncie transmissions, and is crucial for accurately measuring the vehicle's speed. It ensures the synchronization between the speedometer and the transmission output, providing reliable speed readings for the driver.