Restore commercial fleet emissions performance with this premium Skyline aftermarket Navistar 2594140C91 / 5011118R91 DOC Inlet Module Replacement Kit. This brand-new flow-through Diesel Oxidation Catalyst (DOC) functions as an absolute match for factory-stamped numbers 2594140C91 and 5011118R91. Engineered as a genuine OE manufactured component replacement for heavy-duty emissions modules running Navistar MaxxForce 7 and MaxxForce DT powertrain platforms, it requires no exhaust system modifications for installation, carries zero core charge, and ships free within the continental United States.
✓ Free Shipping
✓ EPA Compliant
Cross-References for INTERNATIONAL / Navistar 2594140C91
Instant Fitment Verification: This direct-fit replacement diesel oxidation catalyst replaces components stamped with housing part numbers, casting codes, master assembly codes, or tag profiles matching any of the interchangeable manufacturing references listed below:
Manufacturer
Cross Reference Part Numbers
Navistar OEM Cross References
2594140C91, 5011118R91
Skyline
MC0501
Roadwarrior
C0019-ID
DuraFit
C20-0031
Dinex
65026
Global Reference
GESi-541
FSS Emission Product
MC0501-FSS
Choose the Setup That Fits Your Shop’s Needs
Select the setup from the product options above that best fits your shop's needs:
Full Kit (Best Value): Includes (1) Brand-New Particulate Filter, (1) 2594129C1 OEM-quality gasket, and (1) 2594128C1 heavy-duty hardware clamp.
DOC Only: Includes the replacement catalyst module core only. Service gaskets and mounting clamps are not included.
TECHNICAL SPECIFICATIONS
Measurement Parameter
Specification Value
Material Base Construction
Stainless Steel
Net Assembly Weight
26.15 lbs (11.87 kg)
Overall Length
39.57 inches (1005.08 mm)
Outer Body Diameter
4.00 inches (101.60 mm)
Component Dimensions (W x H)
9.30 x 16.19 inches (236.22 x 411.23 mm)
Exhaust Emissions Norm
EPA07 Compliant
Key Features
Proudly Built in the USA: Designed, engineered, and manufactured in America.
EPA Compliant: Meets federal EPA07 emission standards for legal installation nationwide.
No Core Charge: Brand-new unit; completely eliminates dirty core return tracking and balance hassles.
Exact-Fit™ Technical Dimensions: Built with matching inlet/outlet outer diameters, pre-machined sensor ports, and specialized body hanger brackets for zero exhaust system modifications.
Substrate Performance Matrix: Advanced flow-through catalyst core uses verified washcoat metal loading to sustain exhaust temperature control and lower backpressure limits.
Premium Stainless Steel Construction: High-grade stainless steel shell maximizes thermal durability, preventing oxidation under heavy fleet use.
Fast Free Shipping: Free ground freight within the continental United States. Orders confirmed before 2:00 PM Eastern can ship out the same business day.
Warranty Protection: Supported by an extensive 3-year unlimited mileage replacement coverage matrix.
Engine Compatibility & Fitment Guide
Direct alternative replacement solution for supported model year commercial configurations running horizontal chassis architectures. Optimized for:
Engine Platforms: Highly optimized for heavy-duty Navistar MaxxForce 7 and MaxxForce DT powertrain platforms matching approximate model years 2007 to 2009.
Chassis Fitments: Extensively deployed across medium-to-heavy regional transport setups, vocational frameworks, dump trucks, delivery trucks, day cabs, and bus fleet applications matching engine specifications.
Frequently Asked Questions
Does this replacement DOC require a core return?
No. This is a brand-new aftermarket unit. There are no core charges, core tracking hassles, or return freight expenses required.
Does this replacement unit come with the necessary clamps and gaskets?
It depends on your selection. Selecting the "Full Kit" configuration adds the listed service gaskets and hardware clamps to your shipment package. Opting for the "DOC Only" selection provides the replacement core unit alone without service mounting hardware accessories.
Will this unit clear active dashboard emissions fault codes?
Yes, assuming downstream diesel particulate filters and exhaust sensors are operating within specification. Replacing a degraded catalyst restores legal conversion thresholds, allowing the vehicle control module to clear active DOC efficiency faults.
SIGNS YOUR DIESEL OXIDATION CATALYST (DOC) NEEDS REPLACEMENT
Frequent, unprompted, or incomplete DPF regeneration cycles linked directly to upstream catalyst efficiency degradation matching part numbers 2594140C91 / 5011118R91
Excessive particulate soot face-plugging or heavy face mask scaling across the internal catalyst face assembly
Active dashboard diagnostic trouble codes (DTCs) pointing directly to poor catalyst conversion efficiencies or thermal response delays
Unexplained commercial engine backpressure spikes or noticeable horsepower deterioration under loaded transport pulls
*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 module casing before placing an order.
California Shipping Notice: This product is EPA compliant but is NOT for sale in California and cannot be shipped to a California address.
Disclaimer: Product images are for reference only. Service installation hardware depends on configuration parameters selected during product checkout lines. Selecting the "Full Kit" option adds the explicitly listed high-temperature gaskets and hardware clamps to your tracking shipment. Price is for (1) pre-packaged DOC component setup. Inventory levels are subject to local availability updates.
Warranty Information
Skyline Emissions, Inc., offers a 3-year, unlimited mileage warranty on all their DPFs and DOCs.