AutoMeter Phantom In-Dash Electric Speedometer - 5 in. 51100 Twist-lock backing pad accepts 2"

Twist-lock backing pad accepts 2" twist lock style cleaning or sanding discs and features a 1/4" arbor to work with most drills or 90° die grinders

a 36" #4 braided steel hose with -4AN fittings

the key suspension components

1988-1990 GMC C5000

AutoMeter Phantom In-Dash Electric Speedometer - 5 in. 51100 Twist-lock backing pad accepts 2"Tickets are no fun. Calibrating a speedometer isn't a great deal of fun either. AutoMeter's Electronic Programmable Speedometer makes short work of both, providing an easy to install and easy to calibrate solution that will help keep your speed exactly where it needs to be. Compatible with most factory speed senders, you'll wonder why you ever struggled with a speedometer before. Calibration is as simple as a two mile drive, or for even easier