General Motors GM-50422 DEF Diesel Refractometer Shop By Vehicle>Nissan It's carefully designed so the

It's carefully designed so the shank and body diameter align perfectly

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General Motors GM-50422 DEF Diesel Refractometer Shop By Vehicle>Nissan It's carefully designed so theGeneral Motors GM 50422 DEF Diesel Refractometer Kent Moore Tool Number: EN 50422 2010 2011 Model year and newer diesel engines use an emission control system which injects Diesel Exhaust Fluid (DEF) into the exhaust to reduce emissions. Diagnosis of the DEF system requires measuring the percent concentration of the DEF, approximately 32. 5%. EN 50422 is a refractometer that allows a direct reading of the DEF concentration. To determine the DEF