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The AutoMeter Spek‑Pro high‑pressure rail gauge is a 2‑1/16" instrument built to monitor ultra‑high pressures in direct‑injected diesel systems using a digital stepper motor drive and solid‑state sensing. It connects directly to factory sensors and includes a plug‑in pass‑through harness to simplify wiring for 2001–2012 GM Duramax and 2003–2008 Dodge Cummins applications. Seven selectable backlight colors and peak/alert features aid visibility and safety.
Autometer Spek-Pro Gauge Rail Press 2 1/16in 30Kpsi Stepper Motor W/Peak & Warn Wht/Blk
