Cummins ISX Aftermarket 2880500 / A029U531 Diesel Oxidation Catalyst (DOC) Kit

Cummins 2880500 A029U531 Diesel Oxidation Catalyst DOC

Interchange References: 2880500, 2880500NX, 2880500RX, 2880500CUM, A029U531, assembly number 5291772, Skyline XN0638, FSS Emission Products XN0638-FSS, DuraFit C20-0122, gaskets 2871453 and 2866337, clamps 2871863 and 2880483

Replace a worn or damaged Cummins 2880500 or A029U531 Diesel Oxidation Catalyst DOC with this brand-new Skyline aftermarket DOC filter. This direct-fit replacement is designed for select Cummins ISX heavy-duty diesel engine applications using compatible EPA10 exhaust aftertreatment systems, including select Class 8 highway, long-haul, regional-freight, and vocational chassis configurations. 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 2880500 A029U531 DOC Cross Reference Table

Compare the stamped part number or emissions identification tag on your original DOC with the interchangeable references below.

Cummins ISX DOC Fitment Guide

This Skyline DOC filter is intended for select heavy-duty diesel applications equipped with compatible Cummins ISX EPA10 exhaust aftertreatment systems. Exact compatibility varies by engine calibration, emissions family, model year, chassis configuration, exhaust layout, and original DOC part number.

• Engine Platforms: Select Cummins ISX heavy-duty diesel engines
• Approximate Model Years: Select 2010–2012 applications
• Approximate Emissions Era: EPA10 exhaust aftertreatment applications
• Common Chassis Applications: Select Class 8 highway, long-haul, regional-freight, and vocational configurations
• Compatible OEM Numbers: 2880500, 2880500NX, 2880500RX, 2880500CUM, and A029U531

Choose Your Kit Configuration

Select the configuration from the product options that best fits your installation needs.

• Full Kit (Best Value): Includes one (1) brand-new DOC unit, one (1) 2871453 installation gasket, one (1) 2866337 installation gasket, one (1) 2871863 heavy-duty clamp, and one (1) 2880483 heavy-duty clamp
• DOC Only: Includes one (1) DOC only. Installation gaskets and clamps are not included

DOC Technical Specifications

Key Features

• Direct-fit replacement for the listed Cummins OEM applications
• Brand-new Skyline aftermarket Diesel Oxidation Catalyst DOC
• No core charge or used catalyst return required
• EPA compliant for applicable federal emissions applications outside California
• Available Full Kit with 2871453 and 2866337 gaskets and 2871863 and 2880483 clamps
• Ships free within the continental United States
• Backed by a 3-year unlimited mileage warranty

Signs Your DOC Needs Replacement

• Difficulty reaching or maintaining 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

*Note: Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before placing an order.

Disclaimer: Product images are for reference only. Each selected option includes one (1) physical DOC unit. The Full Kit option includes one DOC with the listed gaskets and clamps. The DOC Only option includes one DOC only, with no gaskets or clamps included.