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 $282.00 USDRegular priceUnit price / per$0.00 USDSale price $282.00 USD -
6540-71-1110 | DEF Injector | For Komatsu® Equipment
Regular price $387.00 USDRegular priceUnit price / perSale price $387.00 USD -
4326864 | NOx Sensor | For Cummins® Engines
Regular price $293.00 USDRegular priceUnit price / per$340.00 USDSale price $293.00 USDSale -
0 281 020 457 | Dosing Control Unit | For Isuzu® Engines
Regular price $1,692.00 USDRegular priceUnit price / per$0.00 USDSale price $1,692.00 USD -
451-8101 | DEF Pump | For Caterpillar® Engines
Regular price $1,488.00 USDRegular priceUnit price / perSale price $1,488.00 USD
POPULAR ITEMS
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12 Pin DEF Pump Repair Harness | For Bosch® Style DEF Pumps (Grey Keyway)
Regular price $75.00 USDRegular priceUnit price / perSale price $75.00 USD -
5461550, 4384375, 4383978 | Particulate Matter Sensor | For Cummins® Engines
Regular price $282.00 USDRegular priceUnit price / per$0.00 USDSale price $282.00 USD -
6462213 | DEF Pump 12 Pin Harness Pigtail | For Cummins® Engines
Regular price $122.00 USDRegular priceUnit price / per$0.00 USDSale price $122.00 USD -
4919353 | DEF Pump 12 Pin Harness Pigtail | For Cummins® Engines
Regular price $122.00 USDRegular priceUnit price / per$0.00 USDSale price $122.00 USD -
2871879 | DEF Pump | For Cummins® Engines
Regular price $620.00 USDRegular priceUnit price / perSale price $620.00 USD
TECHNICAL ADVICE BLOG
View all-
Why Your Emissions Fault Code Doesn’t Clear—Eve...
Many operators replace a failed DEF pump, NOx sensor, or temperature probe—only to find the emissions fault code still active. This is a common issue in modern diesel engines. Simply...
Why Your Emissions Fault Code Doesn’t Clear—Eve...
Many operators replace a failed DEF pump, NOx sensor, or temperature probe—only to find the emissions fault code still active. This is a common issue in modern diesel engines. Simply...
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How to Tell If Your NOx Sensor Is Failing (And ...
 How to Tell If Your NOx Sensor Is Failing (And What to Do About It) Modern diesel engines rely heavily on NOx sensors to control emissions and optimize engine...
How to Tell If Your NOx Sensor Is Failing (And ...
 How to Tell If Your NOx Sensor Is Failing (And What to Do About It) Modern diesel engines rely heavily on NOx sensors to control emissions and optimize engine...
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




