Restore emission system performance with this premium Skyline aftermarket Cummins 2871571 Diesel Oxidation Catalyst (DOC) Filter Inlet Module Replacement. This brand-new unit serves as a direct alternative to OEM numbers 2871571, 2871571NX, 2871571RX, 2871467, 2871467NX, 2871467RX, 2871760, 2871760NX, and 2871760RX. Engineered as an exact-fit replacement for medium-duty trucks powered by Cummins ISB 6.7L and Cummins QSB 6.7L engines, it requires no exhaust system modifications for installation, carries zero core charge, and ships free within the continental United States.
✓ Free Shipping
✓ EPA Compliant
Cummins 2871571 Cross Reference
How to Verify Your Unit: This direct-fit catalyst replaces components stamped with housing, casting, or manufacturing tags matching any of the interchangeable assembly numbers or supplier cross-references listed below:
Select the setup from the product options above that best fits your shop's needs:
Full Kit (Best Value): Includes (1) Brand-New DOC, (1) 2866636 inlet gasket, (1) 2871451 primary gasket, (1) 2871861 clamp, and (1) 2880482 clamp.
DOC Only: Includes the replacement catalyst module only. Gaskets and clamps are not included.
Key Features & Specifications
Proudly Built in the USA: Designed, engineered, and manufactured in America.
No Core Charge: Brand-new aftermarket component; eliminates the hassle and downtime of shipping a dirty core back.
Exact-Fit™ Technical Dimensions: Engineered with OEM-matching inlet/outlet diameters, pre-machined sensor ports, and factory-spec hanger alignments for direct exhaust installation with no modifications required.
Substrate Performance Matrix: Advanced flow-through core utilizes optimized precious metal washcoat loading to maintain optimal exhaust temperatures and long-term emission control.
Industry-Leading Warranty: Backed by a 3-year unlimited mileage warranty on all Skyline aftermarket solutions.
EPA Compliant: Meets all federal emissions standards for diesel oxidation catalyst replacement requirements.
Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day.
Vehicle & Engine Application Guide
Fits approximately 2010 to 2012 commercial vehicles equipped with medium-duty Cummins diesel powertrains. Optimized for:
Chassis Fitments: This module fits select medium-duty conventional trucks, bus platforms, and vocational fleets. Compatible configurations include:
Fits select Freightliner, Kenworth, Peterbilt, Blue Bird, Thomas Built, and commercial vocational bus chassis configurations running these specific engine models.
Signs Your Cummins DOC Needs Replacement
Frequent, unprompted, or incomplete DPF regeneration cycles
Excessive particulate soot loading or exhaust face-plugging at the inlet module catalyst face
Unexplained commercial engine backpressure increases or gradual exhaust system power loss
*Note: Always verify exact compatibility using your vehicle's VIN number, engine serial number, or original stamped OEM part number on the unit 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. Final components such as the DOC, gaskets, and clamps depend on the selected configuration. Price is for one (1) physical DOC unit. Selecting the "Full Kit" option adds the explicitly listed installation gaskets and clamps to your shipment.
Warranty Information
Skyline Emissions, Inc., offers a 3-year, unlimited mileage warranty on all their DPFs and DOCs.