Selective Catalytic Reduction (SCR) filters play a critical role in diesel exhaust aftertreatment systems by supporting the reduction of nitrogen oxide (NOx) emissions before gases exit the tailpipe. For Cummins QSB 4.5L engines manufactured from 2011 through 2020, the Cummins QSB 4.5L SCR Filter 2011–2020: OEM 4353699 delivers a direct-fit, factory-compatible solution engineered to help maintain proper emissions control and support smooth engine operation.
• The SCR filter supports NOx reduction by enabling essential chemical reactions that turn harmful emissions
into nitrogen and water, helping your engine stay within EPA emissions standards.
• The OEM 4353699 SCR filter is specifically designed for Cummins QSB 4.5L applications built between 2011 and 2020,
ensuring accurate fitment and seamless integration with original exhaust aftertreatment components.
• Proper SCR filtration helps maintain balanced exhaust cleaning and supports consistent DEF dosing,
which contributes to dependable emissions performance during daily driving.
• Installing the correct OEM SCR filter helps reduce the risk of fault codes, warning lights, and derate events,
minimizing interruptions and unnecessary diagnostic time.
• A well-matched SCR filter also helps protect downstream components from excessive emissions buildup,
supporting longer service life for related parts and fewer maintenance surprises.
• Choosing an OEM replacement like the Cummins QSB 4.5L SCR Filter 2011–2020: OEM 4353699 gives you confidence
in durability, correct system integration, and reliable control of harmful emissions.
An SCR filter is a key part of effective emissions management and lasting engine performance. The OEM 4353699 SCR filter is engineered to restore proper aftertreatment function for your Cummins QSB 4.5L engine, helping reduce emissions-related issues and support smoother operation. At Tamerx Diesel Parts, we provide trusted diesel components to help keep your engine operating efficiently mile after mile.








































