1/8-27 NPT Transmission Test Port Extender

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    30 DayNo Hassle Returns

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    Free Shipping Over $50Contiguous USA

  • Free In-House Support

    Free In-House Support

  • One Year Limited Warranty

    One Year
    Limited Warranty


GlowShift 1/8-27 NPT Transmission Test Port Extenders are specifically designed for the 1994-2007.5 Dodge Ram and are required when installing any of our transmission temperature gauges into this model year range. While it is made for these Ram trucks, it can also be used universally on other makes and models as well. If the extender is not installed, internal transmission parts will break the sensor which could result in significant damage. This 1/8-27 NPT adapter will extend the transmission test port, allowing you to easily install the transmission temperature gauge sensor. Built for durability, it is made from Carbon Steel with a Yellow Zinc coating to prevent corrosion.

Note: Does not work with 68RFE Transmissions.

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  • 1/8-27 NPT Transmission Test Port Extender
  • Designed for 1998.5-2007.5 Dodge Ram
  • Can Be Used with Most Makes and Models
  • Required for GlowShift Trans Temp Gauges
  • Made from Carbon Steel
  • Yellow Zinc Coating to Prevent Corrosion
  • Free Lifetime Tech Support
  • One Year Limited Warranty
  • Installation Instructions
Tech Specs
Female Thread: 1/8-27 NPT
Male Thread: 1/8-27 NPT
Engine: 6.7L Cummins
Engine: 5.9L Cummins
Gauge Type: Transmission Temperature

Includes an installation guide which is available online and included with your order. You can also visit our library of installation videos which include complete step-by-step tutorials and useful tips on how to install a wide range of GlowShift products.

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