Product Overview
International/Navistar 2596407C92 5011122R91 2594007C91 DOC Diesel Oxidation Catalyst
International/Navistar DOC replacement: The Skyline MC0503 Diesel Oxidation Catalyst is a brand-new aftermarket replacement for International/Navistar 2596407C92, 5011122R91 and 2594007C91. Skyline references include MC0503, MC0503-M and MC0503-C, with additional Roadwarrior C0069-ID, DuraFit C20-0026, Dinex 65028 and Global Emission Systems GESi-539 cross references.
Engine applications: Designed for select International/Navistar MaxxForce diesel applications using compatible EPA07 exhaust aftertreatment systems. Common applications include select medium-duty, heavy-duty, regional, vocational, dump, delivery and fleet configurations.
Included installation hardware: The Gaskets Included configuration includes one brand-new DOC and one 2593998C1 aftermarket exhaust gasket. Clamps are not required for installation. This DOC has no core charge, is EPA compliant, is backed by a 3-year unlimited mileage warranty, and ships free within the continental United States.
International/Navistar 2596407C92 5011122R91 2594007C91 DOC Specifications
- Product Type
- Diesel Oxidation Catalyst (DOC)
- Common Search Term
- DOC Filter
- Primary OEM Part Numbers
- 2596407C92, 5011122R91, 2594007C91
- Manufacturer Part Number
- Skyline MC0503
- Engine Compatibility
- International Navistar MaxxForce
- Material
- Stainless Steel
- Weight
- 31.64 lbs (14.36 kg)
- Length
- 35.08 inches (891.03 mm)
- Outer Body Diameter
- 7.97 inches (202.50 mm)
- Overall Dimensions
- 7.97 x 15.16 inches (202.50 x 385.06 mm)
- Core Condition
- Brand-New Aftermarket Unit
- Core Charge
- No Core Charge
- Warranty
- 3-Year Unlimited Mileage Warranty
- Exhaust Emission Norm
- EPA07 Compliant
International/Navistar 2596407C92 5011122R91 2594007C91 DOC Cross References
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 |
|---|---|
| International/Navistar OEM | 2596407C92, 5011122R91, 2594007C91 |
| Skyline | MC0503, MC0503-M, MC0503-C |
| Roadwarrior | C0069-ID |
| DuraFit | C20-0026 |
| Dinex | 65028 |
| Global Emission Systems / GESi | GESi-539 |
How to Locate Your Stamped Part Number: Original manufacturer part numbers are commonly stamped into the metal canister body band or printed on the emissions tag attached to the catalyst shell. Always compare the stamped number on your original unit to the cross-reference numbers listed above before ordering.
International/Navistar MaxxForce DOC Fitment Guide
This International/Navistar DOC is designed for select medium-duty, heavy-duty, regional, vocational, dump, delivery and fleet applications equipped with compatible International/Navistar MaxxForce exhaust aftertreatment systems.
- Engine Platforms: Select International Navistar MaxxForce diesel applications using the matching DOC assembly.
- Approximate Emissions Era: Commonly associated with select EPA07 applications from approximately 2007 to 2009, depending on vehicle configuration.
- Common Chassis Applications: Select commercial transport, regional pickup, dump, delivery truck, and vocational fleet applications using the matching exhaust layout.
- Compatible OEM Numbers: 2596407C92, 5011122R91, and 2594007C91.
Skyline MC0503 DOC Installation Configuration
This DOC is available with the supplied gasket configuration or as a DOC-only option.
| Option | Included Components |
|---|---|
| Gaskets Included | Includes one (1) brand-new DOC unit and one (1) 2593998C1 aftermarket exhaust gasket. Clamps are not required for installation. |
| DOC Only | Includes one (1) DOC only, with no gasket included. |
Skyline MC0503 DOC Key Features
- Direct-Fit International Navistar DOC: Replaces International Navistar diesel oxidation catalyst applications listed in the cross-reference table above.
- Gaskets Included: Includes one (1) 2593998C1 aftermarket exhaust gasket with the Gaskets Included configuration.
- No Core Charge: Brand-new aftermarket DOC with no dirty core return, core tracking paperwork, or return freight expense.
- EPA Compliant: Designed for supported International Navistar MaxxForce aftertreatment applications.
- Brand-New Unit: New aftermarket Diesel Oxidation Catalyst rather than a remanufactured core.
- Stainless Steel Construction: Built with stainless steel material for durability in heavy-duty exhaust systems.
- 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.
- Increased exhaust backpressure or reduced engine performance.
- Physical cracking, melting, corrosion, or damage to the DOC substrate or housing.
Skyline MC0503 Multi-Warehouse Shipping
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.
