The Bosch SP0F000020 is a Sport II 3-3/8" Tachometer. It features a 0-8000 RPM range, driven by an air core motor. The gauge features a 3-3/8" white dial face with a 250 degree sweep and chrome bezel with mounting hardware. Compatible with 4, 6, and 8 cylinder engines and has an adjustable redline pointer. Functions with breaker points, electronic, and most aftermarket ignition systems (not magnetos). The Sport II Tachometers deliver style and performance while featuring high accuracy with fast needle response for 90% of full scale. 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.