E85 Checker - FOR E85 FUEL ONLY - 26-147 flowmaster 7L V8 1979 - 1989

7L V8 1979 - 1989 GMC P3500   454/7

Fits: 1995-1997 Ford F-350

8L V8 1969 Ford Fairlane 351/5

7L V8 Hemi Engine

E85 Checker - FOR E85 FUEL ONLY - 26-147 flowmaster 7L V8 1979 - 1989Overview: Calibrating the right air fuel mixture is important to gain proper power and efficiency from your carburetor and engine. But for vehicles running E85 fuel, proper calibration is difficult if you don't know the exact percentage of ethanol to gasoline in the fuel. Because E85 fuel can vary in the amount of ethanol and gasoline mixture, Holley's E85 Checker is an essential tool that can instantly determine the ratio in the E85 fuel you're