Diesel engines generate nitrogen oxide (NOx) emissions during combustion, which must be treated before exiting the exhaust system. The Cummins X15 SCR 2022–2024: OEM 5418634 is a Selective Catalytic Reduction (SCR) assembly designed to help process these gases as part of the engine’s aftertreatment system. Within this system, diesel exhaust fluid (DEF) is introduced into the exhaust stream and reacts inside the SCR catalyst, converting harmful NOx gases into nitrogen and water vapor.
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Designed for Cummins X15 engines from 2022 to 2024, the OEM 5418634 SCR fits within the factory aftertreatment configuration used in heavy-duty trucks.
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The SCR catalyst contains a structured internal substrate that provides the surface where the chemical conversion process occurs.
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Diesel exhaust fluid injected upstream of the SCR reacts with nitrogen oxide gases inside the catalyst chamber.
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This reaction converts NOx emissions into nitrogen and water vapor, reducing harmful exhaust output.
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A properly functioning OEM 5418634 SCR assembly helps maintain balanced readings from emission sensors positioned before and after the catalyst.
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The SCR unit works alongside the DEF dosing system and other aftertreatment components to maintain proper exhaust chemistry.
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The catalyst housing is engineered to tolerate high exhaust temperatures and the constant flow of gases during heavy-duty truck operation.
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Replacing a worn or restricted SCR unit can help restore proper emission conversion within the exhaust aftertreatment system.
The Cummins X15 SCR 2022–2024: OEM 5418634 from Tamerx Diesel Parts offers a dependable replacement solution for maintaining emission system reliability. Installing the correct SCR assembly helps ensure the aftertreatment system continues converting exhaust gases effectively while supporting consistent diesel engine operation.








































