Product Overview
Cummins 5287480 4965285 PACCAR Q621385 DOC Diesel Oxidation Catalyst
Interchange References: Cummins 5287480, 5287480NX, 5287480RX, 4965285, 4965285NX, PACCAR Q621385, Skyline BG0401, FSS Emission Products BG0401-FSS, DuraFit C20-0001, Roadwarrior C0103-ID, GESi GESi-507, Dinex 58022
Replace a worn or damaged Cummins 5287480, Cummins 4965285, or PACCAR Q621385 DOC Diesel Oxidation Catalyst with this brand-new Skyline aftermarket DOC. This catalyst also cross-references Cummins service numbers 5287480NX, 5287480RX, and 4965285NX. It is intended for select Cummins ISB 6.7L and PACCAR PX-6 6.7L diesel engine applications equipped with compatible EPA07 exhaust aftertreatment systems. The Full Kit includes two 2871451 installation gaskets and two 2871861 heavy-duty clamps. This DOC has no core charge, includes a 3-year unlimited mileage warranty, is EPA compliant, and ships free within the continental United States.
Cummins and PACCAR DOC Cross References
Cummins 5287480 and 4965285 and PACCAR Q621385 DOC catalysts cross-reference with Skyline BG0401 and the additional OEM service and aftermarket replacement numbers listed below.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | 5287480, 5287480NX, 5287480RX, 4965285, 4965285NX |
| PACCAR OEM | Q621385 |
| Skyline | BG0401 |
| FSS Emission Products | BG0401-FSS |
| DuraFit | C20-0001 |
| Roadwarrior | C0103-ID |
| GESi | GESi-507 |
| Dinex | 58022 |
Cummins ISB 6.7L and PACCAR PX-6 DOC Compatibility
This Skyline DOC is intended for select Cummins ISB 6.7L and PACCAR PX-6 6.7L commercial diesel engine applications equipped with compatible EPA07 exhaust aftertreatment systems. Exact compatibility varies by engine configuration, emissions family, model year, chassis, exhaust layout, aftertreatment assembly, and the original stamped DOC part number.
- Engine Platforms: Select Cummins ISB 6.7L and PACCAR PX-6 6.7L applications
- Approximate Model Years: Select 2007–2009 applications
- Emissions Standard: Select EPA07 exhaust aftertreatment applications
- Full Kit Gaskets: Two 2871451 gaskets
- Full Kit Clamps: Two 2871861 clamps
Choose the Setup That Fits Your Shop’s Needs
Select the configuration from the product options that best fits your installation needs.
- Full Kit (Best Value): Includes one (1) brand-new DOC unit, two (2) 2871451 installation gaskets, and two (2) 2871861 heavy-duty clamps.
- DOC Only: Includes one (1) Diesel Oxidation Catalyst only. Installation gaskets and clamps are not included.
DOC Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Diesel Oxidation Catalyst |
| Cross References | Cummins 5287480, 5287480NX, 5287480RX, 4965285, 4965285NX; PACCAR Q621385; Skyline BG0401; FSS Emission Products BG0401-FSS; DuraFit C20-0001; Roadwarrior C0103-ID; GESi GESi-507; Dinex 58022 |
| Engine Compatibility | Select Cummins ISB 6.7L and PACCAR PX-6 6.7L applications |
| Overall Length | 7.56 in (192.02 mm) |
| Outer Body Diameter | 10.18 in (258.40 mm) |
| Weight | 21.83 lb (9.90 kg) |
| Housing Material | Stainless steel |
| Included Installation Hardware | Full Kit includes two 2871451 installation gaskets and two 2871861 heavy-duty clamps |
| Product Condition | Brand-new aftermarket unit |
| Core Charge | No core charge |
| Warranty | 3-year unlimited mileage warranty |
| Emissions Standard | EPA07 compliant |
Key Features
- Brand-new Skyline aftermarket DOC Diesel Oxidation Catalyst
- Full Kit includes two 2871451 installation gaskets and two 2871861 heavy-duty clamps
- DOC Only configuration available without installation hardware
- No core charge or used catalyst return required
- Stainless steel housing construction
- EPA07 compliant for applicable federal emissions applications outside California
- Ships free within the continental United States
- Backed by a 3-year unlimited mileage warranty
Signs Your DOC May Need Inspection or Replacement
- Frequent, incomplete, or unsuccessful DPF regeneration cycles
- DOC efficiency or catalyst-conversion diagnostic trouble codes
- Slow exhaust-temperature increase during an active regeneration
- Excessive soot, oil, fuel, or ash contamination on the catalyst face
- High exhaust backpressure or abnormal pressure readings
- Reduced engine performance under load
- Cracking, melting, corrosion, or other physical catalyst damage
These symptoms may have multiple causes. Diagnose the complete engine, fuel, turbocharger, sensor, and exhaust aftertreatment systems before replacing the DOC.
*Note: Always verify exact compatibility using the vehicle VIN, emissions-family label, aftertreatment assembly information, and the original stamped OEM part number on the DOC before ordering.
Disclaimer: Product images are for reference only. Each selected configuration includes one (1) physical DOC unit. The Full Kit option includes one DOC, two 2871451 installation gaskets, and two 2871861 heavy-duty clamps. The DOC Only option includes one DOC only, with no installation gaskets or clamps included.
