Product Overview
Cummins 5418478 4395106 4394601 DOC Diesel Oxidation Catalyst
Cummins DOC replacement: The Skyline BJ0303 Diesel Oxidation Catalyst is a direct-fit aftermarket replacement for 5418478, 5418478NX, 5418478RX, 4395106, 4395106NX, 4395106RX, 4394601, 4394601NX, 4394601RX, 2116695X and 2468125XS. These Cummins OEM and service references identify compatible DOC configurations used with select diesel exhaust aftertreatment systems.
Engine applications: Designed for select Cummins B6.7 and Cummins L9 commercial diesel engine applications equipped with compatible exhaust aftertreatment systems. Approximate applications include select 2017–2025 configurations, with exact compatibility dependent on engine configuration, emissions family, chassis, exhaust layout, aftertreatment assembly and original stamped DOC number.
Product details and configurations: Brand-new Skyline aftermarket DOC with stainless steel housing, no core charge, EPA compliance for applicable federal emissions applications, and a 3-Year Unlimited Mileage Warranty. Choose the DOC only or the Full Kit with one 2871772 installation gasket, one 2866636 installation gasket, one 5417471 heavy-duty clamp and one 2880482 heavy-duty clamp. Free ground shipping is available within the continental United States excluding California.
Cummins 5418478 4395106 4394601 DOC Specifications
- Product type
- Diesel Oxidation Catalyst (DOC)
- Brand / part number
- Skyline BJ0303
- Primary OEM numbers
- 5418478, 4395106, 4394601
- OEM service numbers
- 5418478NX, 5418478RX, 4395106NX, 4395106RX, 4394601NX, 4394601RX, 2116695X, 2468125XS
- Compatible engines
- Select Cummins B6.7 and Cummins L9 applications
- Approximate application era
- Select 2017–2025 applications depending on vehicle and aftertreatment configuration
- Length / width
- 12.59 in (320.00 mm)
- Height
- 7.55 in (192.00 mm)
- Weight
- 18.32 lb (8.31 kg)
- Housing material
- Stainless steel
- Full Kit hardware
- 1 2871772 gasket, 1 2866636 gasket, 1 5417471 clamp, and 1 2880482 clamp
- Condition
- Brand-new aftermarket replacement
- Core charge
- None
- Emissions compliance
- EPA compliant for applicable federal emissions applications
- Warranty
- 3-Year Unlimited Mileage Warranty
Cummins 5418478 4395106 4394601 DOC Cross References
Compare the original Cummins DOC part number stamped on the catalyst housing or printed on the exhaust aftertreatment identification tag with the OEM and aftermarket cross-reference numbers below before ordering.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins OEM | 5418478, 5418478NX, 5418478RX, 4395106, 4395106NX, 4395106RX, 4394601, 4394601NX, 4394601RX, 2116695X, 2468125XS |
| Skyline | BJ0303 |
| Roadwarrior | C0375-ID |
| Global Emission Systems / GESi | GESi-563 |
| Dinex | 58327 |
Cummins B6.7 L9 5418478 4395106 4394601 DOC Fitment
The Skyline BJ0303 DOC is intended for select Cummins B6.7 and Cummins L9 commercial diesel engine applications equipped with compatible exhaust aftertreatment systems. Exact compatibility varies by engine configuration, emissions family, model year, chassis, exhaust layout, aftertreatment assembly and original stamped DOC part number.
Cummins B6.7 and L9 Engine Applications
- Select Cummins B6.7 diesel engine applications
- Select Cummins L9 diesel engine applications
- Select 2017–2025 applications depending on vehicle and emissions configuration
- EPA compliant for applicable federal emissions applications outside California
Fitment verification: Always verify exact compatibility using the vehicle VIN, engine serial number, emissions-family label, aftertreatment assembly information and original stamped Cummins DOC part number before ordering.
Skyline BJ0303 DOC and Installation Kit Options
Choose the configuration that best fits your installation needs. The Skyline BJ0303 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 BJ0303 DOC, 1 2871772 installation gasket, 1 2866636 installation gasket, 1 5417471 heavy-duty clamp, and 1 2880482 heavy-duty clamp. |
| DOC Only | 1 new Skyline BJ0303 Diesel Oxidation Catalyst only. Installation gaskets and clamps are not included with the DOC-only option. |
Skyline BJ0303 DOC Key Features
- Brand-new DOC: New Skyline aftermarket Diesel Oxidation Catalyst rather than a remanufactured core.
- Full Kit option: Includes two installation gaskets and two heavy-duty clamps.
- DOC Only option: Available without installation hardware.
- No core charge: No used catalyst return is required.
- Stainless steel housing: Uses stainless steel housing construction.
- EPA compliant: Intended for applicable federal emissions applications outside California.
- Free shipping: Free ground shipping within the continental United States excluding California.
- Warranty: 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.
