The AutoMeter Spek‑Pro diesel rail pressure gauge is a 2‑1/16" display engineered for ultra‑high direct‑injection pressures with a digital stepper motor and solid‑state sensing for reliable readings. It connects to factory sensors and includes a plug‑in pass‑through harness tailored to 2001–2012 GM Duramax and 2003–2008 Dodge Cummins applications. Seven selectable backlight colors, peak recall and configurable warnings improve monitoring and usability.
Autometer Spek-Pro Gauge Rail Press 2 1/16in 30Kpsi Stepper Motor W/Peak & Warn Slvr/Chrm