SKU: 23486874864

4353274NX Genuine Cummins DOC Diesel Oxygen Catalyst

Sale price$584.55 Regular price$649.50
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Description

4353274NX Genuine Cummins DOC Diesel Oxygen CatalystPart details DESCRIPTION DOC Diesel Oxygen Catalyst CONDITION Used BRAND Cummins PART NUMBER 4353274NX OTHER OEM PART NUMBERS THAT WILL WORK 2510787C91, , 4353274RX, 5313770, 5313770NX, 5313770RX, 4353274 Function of this part The aftertreatment system treats exhaust gases after they leave the engine using components such as the DOC, DPF, and SCR catalyst. It controls soot and NOx emissions by trapping particulates and converting harmful gases into

Part details

DESCRIPTION DOC Diesel Oxygen Catalyst
CONDITION Used
BRAND Cummins
PART NUMBER 4353274NX
OTHER OEM PART NUMBERS THAT WILL WORK 2510787C91, , 4353274RX, 5313770, 5313770NX, 5313770RX, 4353274

Function of this part

The aftertreatment system treats exhaust gases after they leave the engine using components such as the DOC, DPF, and SCR catalyst. It controls soot and NOx emissions by trapping particulates and converting harmful gases into less harmful compounds.

Why this part matters

These components are central to emissions compliance on modern diesel trucks. Problems in the aftertreatment system can cause frequent regens, power derates, and down-time until the fault is corrected.

About the brand

Cummins engine parts are trusted for reliable power in a variety of heavy-duty truck and equipment applications.

Fitment & usage

Used OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.

Note: Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 23486874864

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4.2 ★★★★★
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Verified Purchase
judith stevens
Battle Creek, US
★★★★★ 1
Some of the components are plastic
This is not a heavy duty application what so ever . One of the flanges broke . We do not recommend this product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2024
K
Verified Purchase
Kimberly matthews
Birmingham, US
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025
A
Verified Purchase
Alexandra
Grantham, US
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2024
E
Verified Purchase
Eric
Bozeman, US
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly. Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration. Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
C
Verified Purchase
Carl L. Bradley
Massapequa, US
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025

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