This 0-2000 PSI gauge fits older regulators that have right hand threads. This does not fit newer regulators that have left hand threads, usually designated by 'LH' or "Left Hand" on the outer thread barrel.
Nov 22, 2025 by Freddy Miguel Calero Veloz
Q: Is this gauge compatible with the Mk4 dual co2 regulator? Mine falls out and now the gauge is folded
A: Yes, this has right hand threads like the Mk4 regulator.
Regulator Gauge
Gauge works as advertised. No leaks. Make sure your verify thread direction before ordering. Gauge seems to be the same quality as my original that came with my regulator setup. In other words, don't let this thing hit the ground too many times!
OEM Replacement
Pros: This is the exact same gauge found on my Norgren R84 regulator. Works great.