For racing, must be used with an MSD 6, 7 or 8-series ignition. 2012-chevrolet-silverado-3500-hd-esi6745586 Air-Fuel Ratio Gauge - Chrono

Air-Fuel Ratio Gauge - Chrono Series - Wideband - 8:1-18:1 AFR - Electric - Analog - Full Sweep - 2-1/16 in Diameter - Black Face - Each

Air Cleaner Assembly - 14 in Round - 3 in Element - 5-1/8 in Carb Flange - Dropped Base - Ball Milled - Aluminum - Polished - Kit

5 in Length - 525 lb/in Spring Rate - Front - Steel - Gold Powder Coat - Each

835 in Bearing Bore - Steel - Natural - Small Ford - Pair

For racing, must be used with an MSD 6, 7 or 8-series ignition. 2012-chevrolet-silverado-3500-hd-esi6745586 Air-Fuel Ratio Gauge - ChronoThe Chevrolet housing has several racing features that racers will appreciate. At the base of the CNC machined housing there are two O ring grooves. These seals prevent oil in the lifter gallery from leaking through the oil passage. If the engine deck, heads or intake have been modified, there is an adjustable slip collar which allows you to set the correct installation depth.