Injector, Diesel Exhaust Fluid: Description

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of CHRYSLER GROUP, LLC

The Diesel Exhaust Fluid (DEF) injector (1) is similar to a fuel injector, but modified to be compatible with the Urea fluid. The DEF injector is mounted to the front of the Selective Catalytic Reduction (SCR) catalyst and is designed to operate in a underbody environment.