4150 Billet Micro Switch Bracket Kit

The 4150 Billet Micro Switch Bracket Kit from Nitrous Oxide Systems is a precision-engineered control component designed for carbureted nitrous oxide systems running Holley 4150 carburetors. This kit provides the electrical switching mechanism necessary to activate nitrous injection in response to throttle input, making it essential for any serious enthusiast looking to safely and reliably manage nitrous system engagement on street or strip applications.

Built from billet aluminum, the micro switch bracket offers superior durability and tight tolerances compared to stamped alternatives, ensuring consistent, repeatable electrical signal delivery under the vibration and heat cycles inherent to forced induction systems. The bracket mounts directly to the 4150 carburetor and positions the micro switch to detect throttle plate movement, triggering nitrous solenoid activation only when full throttle is reached. This fail-safe design prevents accidental nitrous engagement at partial throttle, protecting engine internals and maintaining control during acceleration.

Engine builders and nitrous system installers rely on this bracket kit for carburetor-fed systems where electronic throttle position sensors are impractical or unavailable. Weighing just 0.1 lbs and sized to fit snugly within the compact envelope of 4150 carburetors, the kit integrates cleanly with minimal fabrication required. Proper installation ensures your nitrous system responds only when intended, delivering the safety margin critical for motor longevity and predictable power delivery across varying load conditions.