Product details:

An Intellitronix Universal Speedometer Sender, which fits all GM, Mopar, and VW applications. This sending unit has a 7/8"-18 NPT thread. It is for use in older vehicles with cable driven speedometers. It comes with a Lifetime Guarantee. It is an 8 pulse generator with Hall-effect for GM transmissions. The working voltage is 8-30 VDC. The length is approximately 10" from tip to tail when all combined together.