The Selective Catalytic Reduction (SCR) filter is a crucial part of the emissions control system on Cummins QSB 6.7L engines from 2011 to 2018. Working within the SCR framework, this filter helps reduce nitrogen oxide (NOx) pollutants in the exhaust, supporting cleaner emissions and helping your engine maintain compliance with environmental regulations. Over time, SCR filters can become worn or restricted, which can lead to reduced emissions performance and potential fault codes. The Cummins QSB 6.7L SCR Filter OEM 4328919 from Tamerx Diesel Parts is engineered to meet original equipment standards, offering a dependable replacement to help maintain proper emissions control.
• Reduces NOx emissions effectively by enabling the SCR system to convert nitrogen oxides into harmless
nitrogen and water vapor, supporting cleaner exhaust output and helping meet emissions requirements
• Designed for Cummins QSB 6.7L engines (2011–2018) ensuring proper fitment, correct installation, and
smooth integration with the factory exhaust and SCR system
• Supports stable exhaust flow by maintaining consistent gas movement through the SCR system, helping
downstream emissions components operate efficiently
• OEM-grade construction (4328919) offering dependable durability, consistent performance, and full
compatibility with original SCR hardware
• Ideal for highway and commercial use where sustained emissions control and efficient SCR operation
are key for long-term engine reliability
Replacing a worn or failing SCR filter with the Cummins QSB 6.7L SCR Filter OEM 4328919 from Tamerx Diesel Parts helps restore proper emissions treatment and supports the overall health of your exhaust system. Choosing a high-quality, OEM-matched SCR filter ensures your engine maintains efficient emissions performance and continues running reliably across varied driving conditions.
































