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Billet Micro Switch Bracket Kit - Holley 4150 and 4150HP Flange

Brand NOS Reference 16512NOS

Tired of tinkering with your microswitch bracket to get the proper adjustment? NOS has just released 2 new part numbers to remedy this. Made from laser engraved, black anodized aluminum, these brackets are superior to any other brackets on the market.

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Available from the manufacturer 22 in stock at factory
Expected delivery to you on Nov 13, 2026
This lead time is an estimate and may change due to circumstances beyond our control

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Tired of tinkering with your microswitch bracket to get the proper adjustment? NOS has just released 2 new part numbers to remedy this. Made from laser engraved, black anodized aluminum, these brackets are superior to any other brackets on the market.

Key features

  • Billet design will not flex or bend allowiing consistent activation every time
  • Provides a simple solution to microswitch mounting
  • Laser engraved NOS logo
  • Microswitch brackets come in a NOS clamshell and include a new microswitch

Technical specifications

  • Brand: NOS (Nitrous Oxide System PI)
  • Manufacturer part number: 16512NOS

Good to know

  • NOTE: The 16512NOS Microswitch Bracket requires the choke to be permanently removed for installation. If you require a choke or have a vacuum secondary 4150 such as a Street Avenger, the 16513NOS 4160 Microswitch Bracket should be used.

Important: this product runs on nitrous oxide (N2 PI), a gas we do not supply and which is currently difficult to obtain. It is your responsibility to find a local supplier of gas for professionals. NOS bottles do not comply with CE standards (they do not carry the PI mark): only CE-approved bottles may be used. European manufacturers offer bottles approved to contain this gas; please check the applicable standards and verify the manufacturer's origin and compliance before purchasing. NOS fittings are not metric (AN / NPT threads depending on the part numbe PI): plan for the adapters needed for your installation. Please comply with the regulations in force in your country.

Product family: Engine
Engine Supports d’électrovanne / microswitch
Materials: Aluminum
Produit mis à jour le: 2026-10-23 15:38:19