0001405639 | Genuine Detroit Diesel® Diesel Exhaust Fluid Dosing Unit Sealco or grinding noises coming from

or grinding noises coming from the ABS pump/modulator area (usually near the engine bay)

cabin climate control won’t work right

Signs of a Bad Diesel Exhaust Fluid Header 2515990C3:

Needle remains in one position regardless of actual conditions

0001405639 | Genuine Detroit Diesel® Diesel Exhaust Fluid Dosing Unit Sealco or grinding noises coming fromDescription: A Diesel Exhaust Fluid (DEF) Dosing Unit 0001405639 is a component in modern diesel vehicles that injects Diesel Exhaust Fluid into the exhaust system to reduce harmful emissions. Part Number: 0001405639 Condition: New Manufacture Brand: Detroit Diesel Related Part Numbers: A0001405639, DDE A0001405639, DDEA0001405639, RA0001405639, EA0001405639 Fits 0001405639 For Detroit Diesel Freightliner heavy trucks with SCR emissions systems