0001405139 | Genuine Detroit Diesel® DEF Metering Unit DEF Metering Unit A Quick Release / Double

A Quick Release / Double Check Valve OR289714 rapidly releases air from brake chambers (quick release) and smartly chooses the higher of two air sources to control a brake (double check)

CARB (California Air Resources Board)

Unusual noises like squeaking or clicking when opening or closing the hood

Blown fuses or tripped circuit breakers related to AC motor circuits

6L V8 - Gas 2022 GMC Savana 4500 Base 6

0001405139 | Genuine Detroit Diesel® DEF Metering Unit DEF Metering Unit A Quick Release / DoublePart Number: 0001405139 Condition: New Manufacture Brand: Detroit Diesel Related Part Numbers: 0001404039, A0001404778, A0001404878 Description: A DEF metering unit also known as a DEF doser, urea metering unit, or DEF dosing module is a key component of the Selective Catalytic Reduction (SCR) emissions system on diesel powered vehicles. It precisely controls the flow of Diesel Exhaust Fluid (DEF) into the exhaust stream. DEF Metering Unit, Doser