Multicolored bar graph shows ratio from "Lean" to "Rich" For gauge ZX815401 (sold separately) Monitors amount of oxygen in exhaust to determine air-to-fuel ratio. 2-1/6" diam. gauge mounts in dash or on or under dash with gauge panel or housing (sold separately). Black bezel, face. Display blacks out when ignition turned off—no visible logos, legends. Instructions included. Note: Can be used with existing factory exhaust sensor, or purchase one from us if vehicle lacks it. Exhaust oxygen sensor also available.
Price: $105.03
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