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The AutoMeter Spek‑Pro rail pressure gauge provides a 2‑1/16" readout for ultra‑high diesel rail pressures with digital stepper motor control and solid‑state sensing for professional accuracy. 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 models. Seven selectable backlight colors, peak recall and alert options add useful monitoring features.
Autometer Spek-Pro Gauge Rail Press 2 1/16in 30Kpsi Stepper Motor W/Peak & Warn Blk/Blk
