Diesel Exhaust Fluid Caps

Diesel exhaust fluid is a urea-based liquid that is injected into the exhaust stream to reduce the emissions of diesel engines. This technology has been used for several years in ‘clean diesels’, including Mercedes Benz and Volkswagen. All diesels manufactured after January 1, 2010 require the diesel exhaust fluid and the cap. There are three different caps for the light duty aftermarket; One for Ford, GM and Chrysler/Dodge. These caps do not hold pressure.