Product Overview
Cummins 4328760 4353257 5302735 A043U500 DOC Diesel Oxidation Catalyst
Cummins DOC replacement: The Skyline XN0621 Diesel Oxidation Catalyst inlet module is a direct-fit aftermarket replacement for 4328760, 4328760NX, 4328760RX, 4353257, 4353257NX, 4353257RX, 5302735, 5302735NX, 5302735RX and A043U500. Additional Cummins interchange references include A047V455 and A042M051.
Engine applications: Designed for select Cummins ISX and ISX15 heavy-duty diesel engine applications equipped with compatible EPA13 exhaust aftertreatment systems. Common applications include select highway, long-haul, regional-freight and vocational configurations from approximately 2013–2016, depending on vehicle and aftertreatment configuration.
Product details and configurations: Brand-new Skyline aftermarket DOC inlet module with premium stainless steel construction, no core charge, EPA13 compliance for applicable federal emissions applications, and a 3-Year Unlimited Mileage Warranty. Choose the DOC only or the Full Kit with one 2871453 gasket, one 2866337 gasket, one 2871863 heavy-duty clamp and one 2880483 heavy-duty clamp. Free ground shipping is available within the continental United States excluding California. Orders placed before 2:00 PM Eastern may ship the same business day when inventory is available.
Cummins 4328760 4353257 5302735 A043U500 DOC Specifications
- Product type
- Diesel Oxidation Catalyst (DOC) Inlet Module
- Brand / part number
- Skyline XN0621
- Primary OEM numbers
- 4328760, 4353257, 5302735, A043U500
- Additional OEM numbers
- 4328760NX, 4328760RX, 4353257NX, 4353257RX, 5302735NX, 5302735RX, A047V455, A042M051
- Compatible engines
- Select Cummins ISX and ISX15 applications
- Approximate application era
- Select 2013–2016 EPA13 applications depending on vehicle and aftertreatment configuration
- Housing material
- Premium stainless steel
- Weight
- 59.54 lb (27.03 kg)
- Length
- 12.80 in (325.12 mm)
- Core diameter
- 13.14 in (334 mm)
- Overall dimensions
- 13.15 x 13.15 in (334 x 334 mm)
- Condition
- Brand-new aftermarket replacement
- Core charge
- None
- Emissions compliance
- EPA13 compliant for applicable federal emissions applications
- Warranty
- 3-Year Unlimited Mileage Warranty
Cummins 4328760 4353257 5302735 A043U500 DOC Cross References
Compare the original Cummins DOC part number stamped on the catalyst housing or printed on the aftertreatment identification tag with the OEM and aftermarket cross-reference numbers below before ordering.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | 4328760, 4328760NX, 4328760RX, 4353257, 4353257NX, 4353257RX, 5302735, 5302735NX, 5302735RX, A043U500, A047V455, A042M051 |
| Skyline | XN0621, XN0621-M, XN0621-C |
| Roadwarrior | C0126-ID |
| Dinex | 58056 |
| DuraFit | C20-0057 |
| Global Emission Systems / GESi | GESi-553 |
Compatible Cummins OEM Aftertreatment Assembly Numbers
The following Cummins OEM aftertreatment assembly numbers are associated with compatible configurations using this DOC. These are complete aftertreatment assembly references and should not be confused with the individual DOC part numbers listed above. Customers searching by an assembly number should verify the original stamped DOC number, VIN, emissions-family information and complete aftertreatment configuration before ordering.
4328834, 4329549, 5301132, 5308325, 5310788, A041K757, A043D371, A043N438, A044X440, A045Y589
Cummins ISX ISX15 4328760 4353257 DOC Fitment
The Skyline XN0621 DOC inlet module is designed for select heavy-duty highway, long-haul, regional-freight and vocational applications equipped with compatible Cummins ISX and ISX15 EPA13 exhaust aftertreatment systems. Exact compatibility varies by engine configuration, emissions family, model year, chassis, exhaust layout, aftertreatment assembly and original stamped DOC number.
Cummins ISX and ISX15 Engine Applications
- Select Cummins ISX heavy-duty diesel engine applications
- Select Cummins ISX15 heavy-duty diesel engine applications
- Select EPA13 applications commonly associated with approximately 2013–2016 model years
Compatible Truck and Chassis Applications
- Select Freightliner Cascadia applications
- Select Freightliner Coronado applications
- Select Kenworth T660 applications
- Select Kenworth T680 applications
- Select Kenworth W900 applications
- Select Peterbilt 389 applications
- Select Peterbilt 567 applications
- Select Peterbilt 579 applications
- Select International/Navistar highway tractor configurations equipped with compatible Cummins engines and matching DOC assemblies
Fitment verification: Always verify exact compatibility using the vehicle VIN, engine serial number, emissions-family label, aftertreatment assembly number and original stamped Cummins DOC part number before ordering.
Skyline XN0621 DOC and Installation Kit Options
Choose the configuration that best fits your installation needs. The Skyline XN0621 is available as the DOC only or as a Full Kit with the applicable installation gaskets and clamps.
| Option | Included Components |
|---|---|
| DOC with Gaskets and Clamps | 1 new Skyline XN0621 DOC, 1 2871453 installation gasket, 1 2866337 installation gasket, 1 2871863 heavy-duty clamp, and 1 2880483 heavy-duty clamp. |
| DOC Only | 1 new Skyline XN0621 Diesel Oxidation Catalyst only. Installation gaskets and clamps are not included with the DOC-only option. |
Skyline XN0621 DOC Key Features
- Direct-fit Cummins DOC: Replaces the Cummins Diesel Oxidation Catalyst applications listed in the cross-reference section above.
- No core charge: Brand-new aftermarket DOC with no used catalyst core return required.
- EPA13 compliant: Designed for supported Cummins ISX and ISX15 EPA13 aftertreatment applications.
- Brand-new unit: New aftermarket Diesel Oxidation Catalyst rather than a remanufactured core.
- Stainless steel construction: Built with premium stainless steel material for heavy-duty exhaust applications.
- Full Kit available: Full Kit includes one 2871453 gasket, one 2866337 gasket, one 2871863 clamp and one 2880483 clamp.
- Free shipping: Free ground shipping within the continental United States excluding California.
- Same-day dispatch: Orders placed before 2:00 PM Eastern may ship the same business day when inventory is available.
- Warranty protection: Backed by a 3-Year Unlimited Mileage Warranty.
Signs Your DOC May Need Inspection or 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
- Increased exhaust backpressure or reduced engine performance
- Physical cracking, melting, corrosion or damage to the DOC substrate or housing
These symptoms can have multiple causes and do not automatically mean the DOC must be replaced. Diagnose the complete engine, fuel, turbocharger, sensor and exhaust aftertreatment systems before replacing the catalyst.
Skyline XN0621 Multi-Warehouse Shipping
Multi-Warehouse Dispatch: Orders ship from regional fulfillment hubs to help provide fast delivery to your repair shop or location. Orders placed before 2:00 PM Eastern may ship the same business day when inventory is available.
