The exhaust aftertreatment system plays an important role in controlling the gases produced during diesel engine operation. One of the key components in this system is the Selective Catalytic Reduction (SCR) assembly. In International N13 engines, the SCR module works with Diesel Exhaust Fluid (DEF) to convert nitrogen oxide (NOx) emissions into nitrogen and water vapor before the exhaust leaves the system. This chemical process helps reduce harmful pollutants released into the environment.
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Key Component in Emissions Control Systems
The SCR assembly forms part of the engine’s aftertreatment setup, where it helps reduce nitrogen oxide levels in the exhaust stream before the gases exit the tailpipe. -
Designed for International N13 Engines (2018–2021)
This unit is intended for diesel engines within the International/Navistar N13 platform produced from 2018 to 2021, supporting compatibility with the engine’s factory emissions system layout. -
Works with DEF to Neutralize Pollutants
Diesel Exhaust Fluid is introduced into the exhaust stream where it reacts within the catalyst chamber, helping convert harmful NOx gases into safer compounds. -
Direct Replacement Built to OEM Specifications
Manufactured according to OEM 5418526 standards, the SCR assembly is designed to integrate with existing aftertreatment components such as sensors, DEF dosing hardware, and exhaust piping. -
Constructed for Heavy-Duty Diesel Applications
SCR components operate within hot exhaust conditions and continuous gas flow, so the assembly is built to withstand the demanding environment found in commercial truck engines.
The SCR module is an essential part of maintaining balanced emissions treatment in diesel-powered vehicles. For International N13 engines, using the correct SCR assembly helps support consistent exhaust processing and proper coordination between the engine and its aftertreatment system.






