Cummins 2888249 / 4969542 / 4965030 / 5273094 DOC Inlet Module Replacement

Restore commercial fleet emissions performance with this premium Skyline aftermarket Cummins 2888249 / PACCAR Q621430 DOC Inlet Module Replacement Kit. Built as a direct replacement for your factory unit, this brand-new flow-through catalyst module serves as a direct counter-part to OEM cross-references 2888249, 4969542, 4965030, 5273094, Q621430, A030W858, 4965317, Q621503, A030K998, Q620970, 2888249NX, 2888249RX, 4969542NX, 4969542RX, 4965030NX, 4965030RX, 5273094NX, 5273094RX, 4965317NX, and 4965317RX. Engineered for an exact fit, with no installation modifications required, it installs cleanly into the factory exhaust setup, carries zero core charge, and ships out in a plain white box with free standard ground shipping within the continental United States.

Cummins & PACCAR Cross Reference

How to Verify Your Unit: This direct-fit replacement replaces components stamped with housing numbers, casting codes, or tag profiles matching any of the interchangeable manufacturing references listed below:

Choose Your Kit Configuration

Select the setup from the product options above that best fits your shop's needs:

• Full Kit (Best Value): Includes (1) Brand-New Component, (2) installation gaskets (2871453), and (2) heavy-duty clamps (2871863) linked cleanly via internal absolute paths.
• Component Only: Includes core unit only. Hardware items excluded.

Key Features & Specifications for Part 2888249 / Q621430

• Proudly Built in the USA: Designed, engineered, and manufactured in America.
• No Core Charge: Brand-new aftermarket component; completely eliminates dirty core tracking and return 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.
• Industry-Leading Warranty: Backed by an extensive 3-year unlimited mileage coverage matrix.
• EPA Compliant: Meets all federal emissions standards for legal installation nationwide.
• Fast Free Shipping: Free standard ground freight within the continental United States. Overnight and expedited shipping options are available at checkout. Orders confirmed before 2:00 PM Eastern ship out the same business day.

Vehicle Fitment Guide

Direct alternative solution for commercial heavy-duty trucks, vocational vehicles, transit systems, and Class 8 applications running compatible powertrain setups:

• Engine Platforms: Approximate Model Years 2007 to 2009 Cummins ISX 15L and QSX 15L aftertreatment platforms.
• Freightliner Applications: Heavy transport line layouts including Cascadia, Cascadia 125, Century Class, Columbia, and Argosy architectures.
• Kenworth Applications: Premium conventional trucks including T600A, T660, T800, W900, T2000, and C500 layouts tracking under codes 2888249 and Q621430.
• Peterbilt Applications: Heavy haul chassis frameworks including 389, 388, 387, 386, 385, 384, 378, 379, 367, 365, and 357 variants.
• International / Navistar Applications: Fleet long-haul models including LoneStar and ProStar systems matching element variables.
• Volvo / Mack Applications: Select line-haul configurations upfitted with matching Cummins engine builds.
• Blue Bird Applications: Commercial transit configurations and school route bus chassis platforms from model years 2007 and newer.

Compatible OEM Master Assembly Numbers: 2866536, 2888164, 2888175, 2888188, 4964974, 4965035, 4965131, 4965132, 4965133, 4965134, 5284044, 5284045, 5284046, A030K228

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 2888249 / 4969542 / 4965030
• 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 trailer pulls

*Note: Always verify exact vehicle compatibility using your vehicle's VIN number, emissions family descriptor tag, or the original stamped part number on your catalyst unit casing before placing an order.

Disclaimer: Product images for reference only. Hardware depends on configuration. Price is for (1) unit. Inventory levels are subject to local availability updates. Selecting the "Full Kit" option adds the explicitly listed installation components to your shipment.