Product Overview
Cummins PACCAR 4353249 1978266 DOC Filter
Interchange References: 4353249, 4353249NX, 4353249RX, 1978266, 1978266PE, 1978266PEX, A047V447, 5298340, 5298340NX, 5298340RX, 5286910, 5286910NX, 5286910RX, A035E403, A041P368, A047V562, XN0619, XN0619-M, XN0619-C, C0127-ID, 58041, 58041-NCG, C20-0200, GESi-547
Restore emissions performance with this premium aftermarket Cummins PACCAR 4353249 / 1978266 DOC Filter. This brand-new Skyline Diesel Oxidation Catalyst is a direct-fit replacement for Cummins OEM part numbers 4353249, 4353249NX, 4353249RX, 5298340, 5298340NX, 5298340RX, 5286910, 5286910NX, 5286910RX, A047V447, A035E403, A041P368, and A047V562, as well as PACCAR OEM part numbers 1978266, 1978266PE, and 1978266PEX. Engineered for select Cummins ISX12, ISX15, and QSX engine applications, this DOC installs without exhaust system modifications, carries no core charge, is backed by a 3-year unlimited mileage warranty, and ships free within the continental United States.
Cummins PACCAR 4353249 1978266 DOC Cross Reference Table
How to Verify Your Unit: Use the cross-reference table below to compare the original stamped OEM part number on your catalyst housing, manufacturing tag, or unit label with compatible OEM and aftermarket interchange numbers.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | 4353249, 4353249NX, 4353249RX, A047V447, 5298340, 5298340NX, 5298340RX, 5286910, 5286910NX, 5286910RX, A035E403, A041P368, A047V562 |
| PACCAR OEM | 1978266, 1978266PE, 1978266PEX |
| Skyline | XN0619, XN0619-M, XN0619-C |
| Roadwarrior | C0127-ID |
| Dinex | 58041, 58041-NCG |
| DuraFit | C20-0200 |
| Global Emission Systems | GESi-547 |
Cummins ISX12 ISX15 QSX DOC Fitment Guide
This Cummins PACCAR DOC is designed for select heavy-duty commercial trucks and vocational equipment using compatible Cummins emissions systems. Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before ordering.
- Engine Platforms: Cummins ISX12, Cummins ISX15, and QSX 15-liter engine applications.
- Approximate Emissions Era: Commonly associated with EPA-compliant heavy-duty aftertreatment systems from approximately 2013 to 2016, depending on truck configuration.
- Common Chassis Applications: Select Kenworth, Peterbilt, Freightliner, International, and vocational truck applications equipped with the matching Cummins or PACCAR DOC assembly.
- Compatible OEM Numbers: 4353249, 4353249NX, 4353249RX, 1978266, 1978266PE, 1978266PEX, A047V447, 5298340, 5298340NX, 5298340RX, 5286910, 5286910NX, 5286910RX, A035E403, A041P368, A047V562
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit (Best Value): Includes one (1) brand-new DOC unit, one (1) 2866337 flange gasket, one (1) 2871453 flange gasket, one (1) 2871863 heavy-duty clamp, and one (1) 5290118 heavy-duty clamp.
- DOC Only: Includes one (1) DOC only. Service gaskets and mounting clamps are not included.
Cummins PACCAR 4353249 1978266 DOC Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Product Type | Diesel Oxidation Catalyst (DOC) |
| Primary OEM Part Numbers | 4353249, 1978266 |
| Manufacturer Part Number | Skyline XN0619 |
| Material Base Construction | Premium Stainless Steel |
| Assembly Weight | 59.54 lbs (27.03 kg) |
| Overall Length | 12.80 inches (325.12 mm) |
| Outer Body Diameter | 13.15 inches (334.00 mm) |
| Overall Dimensions (W x H) | 13.15 x 13.15 inches (334.00 x 334.00 mm) |
| Exhaust Emissions Norm | EPA Compliant |
Cummins PACCAR 4353249 1978266 DOC Key Features
- Direct-Fit Cummins PACCAR DOC: Replaces Cummins 4353249, 4353249NX, 4353249RX and PACCAR 1978266, 1978266PE, 1978266PEX DOC applications.
- No Core Charge: Brand-new component with no dirty core return, core tracking paperwork, or return freight expense.
- EPA Compliant: Meets federal emissions standards for supported heavy-duty diesel applications.
- Stainless Steel Construction: Built with premium stainless steel material for long-term durability in heavy-duty exhaust systems.
- Available Full Kit: Full Kit option includes one (1) 2866337 gasket, one (1) 2871453 gasket, one (1) 2871863 clamp, and one (1) 5290118 clamp.
- Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day when inventory is available.
- Warranty Protection: Backed by a 3-year unlimited mileage warranty.
Signs Your Cummins PACCAR DOC Needs Replacement
- Frequent or incomplete DPF regeneration cycles caused by poor upstream DOC performance.
- Diagnostic trouble codes related to catalyst efficiency, exhaust temperature performance, or emissions system performance.
- Reduced engine performance caused by aftertreatment restriction or poor catalyst function.
- Increased soot loading in the downstream DPF caused by reduced DOC performance.
Multi-Warehouse Dispatch
Orders ship from regional fulfillment hubs to help provide fast delivery to your repair shop or location.
*Note: Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before placing an order.
Disclaimer: Product images are for reference only. Price is for one (1) physical DOC unit. Included hardware is listed above where applicable.
