Bosch SP0F000020 Sport II 3-3/8" Tachometer (White Dial Face, Chrome Bezel) 3-3/8" white dial face with 250 degree sweep with chrome bezel and mounting hardware 0-8000 RPM range, driven by Air Core motor Adjustable redline pointer Compatible with 4, 6, and 8 cylinder engines Functions with breaker points, electronic, and most aftermarket ignition systems (not magnetos)