Product Overview
Cummins A030W856 2888247 4965304 PACCAR Q621319 Diesel Oxidation Catalyst DOC
Interchange References: A030W856, 2888247, 2888247NX, 2888247RX, 4965304, 4965304NX, 4965304RX, Q621319, XN0502, XN0502-M, XN0502-C, C0015-ID, 58027, C20-0007, GESi-506, 2871453, 2871863
Restore exhaust aftertreatment performance with this premium aftermarket Cummins PACCAR Diesel Oxidation Catalyst DOC. This brand-new Skyline DOC is a direct-fit replacement for Cummins A030W856, Cummins 2888247, Cummins 4965304, and PACCAR Q621319, with additional compatible OEM references listed in the cross-reference table below. Designed for select Cummins ISX, ISX15, and QSX 15L EPA07 aftertreatment 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 DOC Cross Reference Table
How to Verify Your Unit: Use the table below to compare the original stamped OEM part number on your DOC canister, emissions tag, or catalyst housing with compatible OEM and aftermarket interchange numbers.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | A030W856, 2888247, 2888247NX, 2888247RX, 4965304, 4965304NX, 4965304RX |
| PACCAR OEM | Q621319 |
| Skyline | XN0502, XN0502-M, XN0502-C |
| Roadwarrior | C0015-ID |
| Dinex | 58027 |
| DuraFit | C20-0007 |
| Global Emission Systems | GESi-506 |
Cummins ISX ISX15 QSX15 DOC Fitment Guide
This Cummins PACCAR DOC is designed for select heavy-duty trucks, vocational vehicles, motorcoaches, and Class 8 applications equipped with compatible Cummins ISX, ISX15, and QSX 15L EPA07 exhaust aftertreatment systems.
- Engine Platforms: Cummins ISX, Cummins ISX15, and Cummins QSX 15L heavy-duty diesel engine applications.
- Approximate Emissions Era: Commonly associated with select EPA07 applications, approximately 2007 to 2009, depending on vehicle configuration.
- Common Chassis Applications: Select Freightliner Cascadia, Columbia, Coronado, Kenworth T660, T800, W900, Peterbilt 386, 388, 389, International Navistar LoneStar, ProStar, Western Star linehaul, and severe-duty vocational configurations using the matching DOC assembly.
- Compatible OEM Numbers: A030W856, 2888247, 4965304, Q621319, and related NX/RX service numbers listed above.
Compatible OEM Assembly Numbers: 4965322, 4969500, 4969802
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, two (2) 2871453 installation gaskets, and two (2) 2871863 heavy-duty clamps.
- DOC Only: Includes one (1) DOC only. Installation gaskets and clamps are not included.
DOC Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Product Type | Diesel Oxidation Catalyst (DOC) |
| Common Search Term | DOC Filter |
| Primary OEM Part Numbers | A030W856, 2888247, 4965304, Q621319 |
| Manufacturer Part Number | Skyline XN0502 |
| Core Condition | Brand-New Aftermarket Unit |
| Substrate Type | Flow-Through Catalyst Core |
| Core Charge | No Core Charge |
| Warranty | 3-Year Unlimited Mileage Warranty |
| Exhaust Emission Norm | EPA Compliant |
Key Features
- Direct-Fit Cummins PACCAR DOC: Replaces Cummins and PACCAR diesel oxidation catalyst applications listed in the cross-reference table above.
- No Core Charge: Brand-new aftermarket DOC with no dirty core return, core tracking paperwork, or return freight expense.
- EPA Compliant: Designed for supported Cummins ISX, ISX15, and QSX 15L aftertreatment applications.
- Flow-Through Catalyst Core: Designed to support exhaust oxidation and the temperatures required by the downstream aftertreatment system.
- Available Full Kit: Full Kit option includes two (2) 2871453 gaskets and two (2) 2871863 clamps.
- 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 DOC Needs Replacement
- Difficulty reaching or maintaining the exhaust temperatures needed for DPF regeneration.
- Frequent, incomplete, or unsuccessful regeneration cycles.
- Diagnostic trouble codes related to DOC catalyst efficiency or exhaust temperature performance.
- Excessive soot loading in the downstream DPF.
- Fuel, oil, or other contamination visible at the catalyst inlet.
- Physical cracking, melting, corrosion, or damage to the DOC substrate or housing.
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. Each selected option includes one (1) physical DOC unit. The Full Kit option includes one DOC with the listed gaskets and clamps. The DOC Only option includes one DOC only, with no gaskets or clamps included.
