The Bosch SP0F000049 is a Style Line 2" Electrical Water/Oil Temperature Gauge. It features a range of 100-280 degrees Fahrenheit. Requires hook up wire. Includes sending unit with 1/8" NPT thread and 1/4", 3/8" and 1/2" adapters. The gauge is a standard 2" black dial for a 2-1/16" opening and features a black bezel with removable black mounting panel. Includes mounting hardware and 12 volt internal back lighting. Only for 12 volt negative ground systems. The Style Line features a clean easy to read look with a bright pointer against a white or black background. Bosch is known for precision, engineering, and innovation. Add style and you have the first-ever line of Bosch gauges, including replacement tachometers, speedometers, temperature and pressure gauges for all applications. Bosch Branded Gauges represent the latest in design following our 100+ year history of Automotive, Industrial, and Racing products.