GlowShift 1/8-27 NPT Drill & Tap Kit - 1/8" Carbon Steel Tap & Size R High Speed Steel Drill Bit - For Exhaust Gas Temp EGT Probe Installation to Exhaust Manifold. GlowShift 1/8-27 NPT Drill & Tap Kit is the Perfect Accesory to Use for Installing an EGT Probe to the Exhaust Manifold or Boost Sensor to the Intake Manifold.
