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NOS Racer's Safety Diffuser Cap Assembly (79-21 All)

Item 405206
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      Product Information

      Features, Description, Q&A, Specs & Installation


      • Safety Diffuser Assembly
      • For Safe Bleeding of Pressure from Nitrous Bottle
      • Replacement Cap for NOS Safety Adapter
      • Made of 2024-Grade Aluminum
      • Finished in Black
      • Fully Assembled for Immediate Installation
      • Sold Individually
      • Backed by a 90-Day Warranty
      • Compatible With All 1979 to 2021 Ford Mustang Models


      Replace Broken Diffuser Assembly. The safety adapter for your nitrous bottle is an essential feature for bleeding pressure safely in the event of overpressure. However, there comes a time when you need to replace the diffuser assembly. Fortunately, you don’t have to replace the entire safety adapter set. You can simply replace the diffuser with the NOS Racer's Safety Diffuser Cap Assembly.

      Top Quality. This NOS Racer's Safety Diffuser Cap Assembly is made of 2024-aluminum to ensure a strong but lightweight construction. And surfaces are coated with a black finish to keep the corrosion away from the assembly.

      Fully Asembled. The NOS Racer's Safety Diffuser Cap Assembly is delivered fully assembled. All you need to do is to connect it to the NOS safety adapter for immediate use.

      Covered by a Ninety-Day Warranty. Holley warrants the NOS Racer's Safety Diffuser Cap Assembly from defects in material and workmanship for 90 days, starting from the date of purchase. Exclusions may include damage resulting from accidents, misuse, neglect, and installation mistakes.

      Application. The NOS Racer's Safety Diffuser Cap Assembly fits all 1979 to 2021 Ford Mustang models.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

      NOS 16175BNOS

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Safety Diffuser Cap Assembly

      Reviews of NOS Intake Products (2)

      Reviews of NOS Intake products have an average rating of 3.5 out of 5

        Questions & Answers

        10 More Questions

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