What size drill bit and tap do I need to tap my manifold for a gauge sensor?Updated 2 hours ago
To tap your manifold for a GlowShift gauge sensor or fitting, you will need an R-size drill bit and a 1/8"-27 NPT tap.
GlowShift offers a 1/8"-27 NPT Drill and Tap Kit that includes the correct R-size drill bit and 1/8"-27 NPT tap, making it easy to properly drill and tap your manifold for installation.
Important: GlowShift strongly recommends removing the manifold before drilling and tapping to prevent metal shavings from entering the engine and potentially causing damage.