Speedometer Adapter


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Speedometer Adapter

Also known as the VSSB (Vehicle Speed Sensor Buffer) or DRAC (Digital Ratio Adapter Computer), this module matches your speedometer to changes in differential ratio and/or tire size.

Currently in-stock for 2.56 and 2.73 differentials with 40″ or 42″ tires.

Custom combinations available, contact us for details.

Plug-in replacement for OEM adapter.  Fits 1994 – 2003 Hummer / H1.

Additional information

Diff Ratio & Tire Size

2.56:1 Diff with 40" Tires, 2.56:1 Diff with 42" Tires, 2.73:1 Diff with 40" Tires, 2.73:1 Diff with 42" Tires


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