OVERNIGHT SHIPPING
OEM Parts. In stock - With warranty.
RECENTLY ADDED
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5461550, 4384375, 4383978 | Particulate Matter Sensor | For Cummins® Engines
Regular price $327.00 USDRegular priceUnit price / per$0.00 USDSale price $327.00 USD -
6540-71-1110 | DEF Injector | For Komatsu® Equipment
Regular price $376.00 USDRegular priceUnit price / perSale price $376.00 USD -
4326864 | NOx Sensor | For Cummins® Engines
Regular price $285.00 USDRegular priceUnit price / per$0.00 USDSale price $285.00 USD -
4 pin DEF Pump Repair Harness | For Cummins® EURO6 DEF Pumps
Regular price $55.00 USDRegular priceUnit price / perSale price $55.00 USD -
4353889 | DEF Filter | For Cummins® DEF Headers
Regular price $62.00 USDRegular priceUnit price / per$0.00 USDSale price $62.00 USD
POPULAR ITEMS
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12 Pin DEF Pump Repair Harness | For Bosch® Style DEF Pumps (Grey Keyway)
Regular price $73.00 USDRegular priceUnit price / perSale price $73.00 USD -
6462213 | DEF Pump 12 Pin Harness Pigtail | For Cummins® Engines
Regular price $118.00 USDRegular priceUnit price / per$0.00 USDSale price $118.00 USD -
4919353 | DEF Pump 12 Pin Harness Pigtail | For Cummins® Engines
Regular price $118.00 USDRegular priceUnit price / per$0.00 USDSale price $118.00 USD -
5461550, 4384375, 4383978 | Particulate Matter Sensor | For Cummins® Engines
Regular price $327.00 USDRegular priceUnit price / per$0.00 USDSale price $327.00 USD -
4919354 | DEF Pump 12 Pin Harness Pigtail | For Cummins® Engines
Regular price $118.00 USDRegular priceUnit price / per$0.00 USDSale price $118.00 USD
TECHNICAL ADVICE BLOG
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SPN 4364 FMI 18: SCR Efficiency Low — Causes, T...
SPN 4364 FMI 18 indicates low SCR NOx conversion efficiency, but it doesn’t automatically mean the SCR catalyst has failed. Learn how DEF quality, NOx sensors, dosing problems, exhaust leaks,...
SPN 4364 FMI 18: SCR Efficiency Low — Causes, T...
SPN 4364 FMI 18 indicates low SCR NOx conversion efficiency, but it doesn’t automatically mean the SCR catalyst has failed. Learn how DEF quality, NOx sensors, dosing problems, exhaust leaks,...
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Inlet vs Outlet NOx Sensor: How to Tell Which O...
Learn the difference between inlet and outlet NOx sensors, what Sensor 1 and Sensor 2 mean, how to compare NOx readings, and how to diagnose which sensor is bad.
Inlet vs Outlet NOx Sensor: How to Tell Which O...
Learn the difference between inlet and outlet NOx sensors, what Sensor 1 and Sensor 2 mean, how to compare NOx readings, and how to diagnose which sensor is bad.
WE UNDERSTAND YOUR NEEDS
At AftertreatmentParts.com, we understand that equipment downtime is loss of revenue. That's why we specialize in providing high-quality emissions components, in stock and ready to ship. We offer an unmatched warranty at the most competitive cost, so you can save money and keep your equipment running smoothly, so you can have peace of mind knowing that you're covered in the event of any issues. Trust us to provide the best solutions for your aftertreatment needs.
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Technical Support
Having trouble with emissions relaibility? Let us help you increase equipment availability all while reducing overhead costs.
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Consignment
Wanting to stock our parts, but not carry the overhead cost? Email us to discuss a plan. support@aftertreatmentparts.com
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1-2 Day Shipping North America
We ship FAST because we know your downtime costs you money. DHL Worldwide express - international.
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New Parts Added Frequently
We are constantly sourcing new parts and expanding our inventory to serve you better




