Exhaust aftertreatment systems are responsible for reducing harmful gases produced during diesel combustion. The Cummins B6.7 SCR 2022–2024: OEM 5418580 is a Selective Catalytic Reduction (SCR) assembly designed to help lower nitrogen oxide (NOx) emissions in Cummins B6.7 engines. Inside the exhaust system, this SCR catalyst works together with diesel exhaust fluid (DEF) to convert harmful NOx gases into nitrogen and water vapor before the gases leave the tailpipe.
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Designed for Cummins B6.7 engines from 2022 to 2024, the OEM 5418580 SCR integrates with the engine’s factory aftertreatment system layout.
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The catalyst chamber provides the environment where DEF reacts with nitrogen oxide gases in the exhaust stream.
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During this catalytic reaction, harmful NOx emissions are converted into nitrogen and water vapor.
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The catalyst substrate contains a honeycomb-style structure that increases the surface area for effective exhaust gas treatment.
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A properly functioning OEM 5418580 SCR assembly helps maintain accurate emission readings from NOx sensors positioned in the exhaust system.
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The SCR unit works alongside DEF dosing components and electronic controls that regulate emission reduction.
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The durable catalyst housing is designed to handle continuous exposure to high exhaust temperatures during heavy-duty operation.
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Replacing a restricted or aging SCR unit can help restore proper exhaust gas conversion and stable aftertreatment system performance.
The Cummins B6.7 SCR 2022–2024: OEM 5418580 from Tamerx Diesel Parts provides a dependable replacement option for maintaining emission system function. Installing the correct SCR assembly helps ensure consistent exhaust treatment and reliable operation of the engine’s aftertreatment system.








































