GlowShift’s Transmission Test Port Extender is specifically designed for the 94-07.5 Dodge Ram. GlowShift’s Transmission Test Port Extender is required when installing any of our transmission temperature gauges into your 1994–2007.5 Dodge Truck. If this extender is not installed, internal transmission parts will break the sensor which could result in major damage. This 1/8 NPT adapter will extend the transmission test port allowing you to easily install your transmission temperature gauge’s temperature sensor. Does not work with 68RFE Transmissions.