2inch/52mm transmission oil temp gauge and sending unit. In-line black aluminum hose fitting with temp sensor port. Monitor transmission temperature and prevent overheating. 80-260'F black face, tinted lens and illuminated red needle. Selectable 7 color LED back-lighting with color recall ability. 1/8-27 NPT temperature sender passes signal to the gauge. 7 color settings: blue, green, red, teal, yellow, purple, white. Fitting sized by the outside diameter of the outer raised lip. Includes detailed instructions and easy DIY wiring diagram.