4080535C1 | Genuine International® Diesel Exhaust Fluid (DEF) Aftertreatment System - Hose

Functions: 
System efficiency: By efficiently returning unused DEF, the hose contributes to the overall effectiveness of the aftertreatment system in reducing exhaust emissions.
DEF Level maintenance: Returning the DEF helps maintain the appropriate DEF level in the tank, ensuring the system has enough DEF for ongoing emission control.
DEF Return path: It channels the DEF solution back from the aftertreatment components, like the Selective Catalytic Reduction (SCR) system, to the DEF tank.

Navistar® is a proud manufacturer of some of the widely used trucks, yellow school buses, defense vehicles, and engines. It was recognized as the first truck and engine manufacturer to be certified by the EPA for meeting 2007 standards for hydrocarbons and particulate matter. But the company's global portfolio is not limited to its line of vehicles and engines—it also carries high-quality replacement parts and accessories to keep all these working in top condition at all times. From hose fuel, bolts, plugs, rivets, and bearings to flashers, incandescent lamps, camshaft brake, gasket injector, and spring door locks, Navistar has also got you covered.