
The AutoMeter Spek‑Pro rail pressure gauge is a 2‑1/16" instrument that monitors extreme direct‑injection pressures using digital stepper motor drive and solid‑state sensing for dependable accuracy. It connects to factory sensors and includes a plug‑in pass‑through harness designed for 2001–2012 GM Duramax and 2003–2008 Dodge Cummins applications. Seven selectable backlight colors, peak recall and configurable warnings make monitoring easier.
Autometer Spek-Pro Gauge Rail Press 2 1/16in 30Kpsi Stepper Motor W/Peak & Warn Blk/Blk