Product Overview
Aftermarket DOC for International / Navistar 2596666C91 Assemblies
Interchangeable Component Configurations: 2596666C91
International / Navistar OEM Cross Reference
Verify Your Unit: This direct-fit replacement diesel oxidation catalyst replaces parts stamped with housing numbers, casting codes, or tags matching any of the interchangeable manufacturing references listed below:
| Manufacture | Cross Reference Part Numbers |
|---|---|
| International / Navistar OEM | 2596666C91 |
| Skyline | 1N0505 |
| Dura-Fit | C20-0050 |
| Roadwarrior | C0122-ID |
| Dinex | 65025 |
| FSS Emission | 1N0505-FSS |
Restore commercial fleet emissions performance with this premium aftermarket replacement diesel oxidation catalyst module core matching International / Navistar OEM part 2596666C91. This brand-new Diesel Oxidation Catalyst (DOC) serves as a direct-fit standalone element alternative to your commercial fleet's factory setup. Engineered for heavy-duty systems running Navistar MaxxForce 11 and MaxxForce 13 engine platforms, it requires no exhaust system modifications for installation, carries zero core charge, and ships free within the continental United States.
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit: Upgrades your order to include (1) Brand-New DOC, (1) 2601233C1 and (1) 3853371C1 Aftermarket Exhaust Gaskets, plus (1) 2596663C1 and (1) 3621545C1 Heavy-Duty Mounting Clamps.
- DOC Only: Includes the replacement DOC only. Installation gaskets and clamps are not included unless upgraded via configuration options.
Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Material Base Construction | Stainless Steel |
| Net Assembly Weight | 42.80 lbs (19.43 kg) |
| Overall Length | 15.16 inches (385.06 mm) |
| Outer Body Diameter | 13.17 inches (334.00 mm) |
| Component Dimensions (W x H) | 13.15 x 13.15 inches (334.00 x 334.00 mm) |
| Exhaust Emissions Norm | EPA Compliant (EPA07 Standard) |
Key Features & Specifications for Navistar Replacement
- Proudly Built in the USA: Designed, engineered, and manufactured in America.
- No Core Charge: Brand-new component; completely eliminates dirty core returns, core log documentation tracking, and core bank delays.
- Technical Dimensions: Engineered with OEM-matching physical sizing, pre-machined sensor bosses, and rigid factory-spec hanger brackets for direct exhaust installation without modification.
- Substrate Performance Matrix: High-efficiency precious metal core substrate ensures precise upstream exhaust breakdown and reliable downstream DPF regeneration support.
- EPA Compliant: Meets federal emission standard regulations for legal installation nationwide.
- Free Shipping: Free ground delivery inside the continental United States. Orders confirmed before 2:00 PM Eastern ship out for immediate shipment the same business day.
Warranty
Backed by a three-year unlimited mileage warranty on all aftermarket DPF and DOCs.
Engine Compatibility & Fitment Guide
Direct alternative replacement solution for heavy-duty over-the-road commercial equipment tracking under approximate model years 2007 to 2009. Optimized for:
- Engine Platforms: Navistar MaxxForce 11 and Navistar MaxxForce 13 heavy-duty diesel powertrains operating with matching configurations.
- Chassis Fitments: Extensively featured across major International highway tractors, regional delivery units, vocational models, and fleet frameworks matching factory line assembly paths.
Signs Your Diesel Oxidation Catalyst (DOC) Needs Replacement
- Inability to reach or hold stable downstream temperatures required for active DPF regeneration cycles linked to codes matching part number 2596666C91
- Face-plugging, oil contamination buildup, or physical cell blockages visible on the internal catalyst substrate face
- Active dashboard diagnostic trouble codes (DTCs) signaling poor catalytic conversion efficiency or unexpected pressure drops across the oxidation framework
- Unexplained commercial engine exhaust smell increases or accelerated downstream DPF loading under standard loaded tractor operations
*Note: Always verify exact vehicle compatibility using your vehicle's VIN number, emissions family descriptor tag, or the original stamped OEM part number on your catalyst unit casing before placing an order.
We ship from several warehouses throughout the USA and Canada to get your DPF or DOC to you as fast as possible.
Contact us today if you need cross-reference validation.
Frequently Asked Questions
Is there a core charge for this aftermarket emissions unit?
No, this is a 100% brand-new aftermarket component. Unlike remanufactured factory units, there is absolutely zero core charge, zero tracking paperwork required, and no need to spend money shipping your old, dirty unit back to us.
Does this replacement unit come with the necessary clamps and gaskets?
When you select the "Full Kit" option from the dropdown on this page, all exact-fit installation gaskets and heavy-duty clamps required for installation are bundled and shipped directly with the assembly. Selecting the component-only option provides the bare unit without hardware.
How fast will my order ship out?
Orders confirmed before 2:00 PM Eastern standard time ship out from our closest regional fulfillment hub on the exact same business day. Free standard ground shipping is included to the continental United States and expedited overnight air choices can be selected directly at checkout.
How do I verify this aftermarket filter matches my truck's setup?
You can verify fitment by identifying the original casting, housing, or tag stamp directly on your factory exhaust unit canister shell. If that number matches any of the cross-references listed on this page, or if your engine model and year line up with our application guide, it will bolt directly in with a perfect factory alignment.
Disclaimer: Product images are for reference only. Final replacement hardware items matching OEM parameters such as gaskets, clamps, and sensor ports depend on your user-selected configuration options. Price is for (1) core unit.
