Restore emission system performance with this premium Skyline aftermarket Cummins A035H234 / 4965222 / 5287477 / Q621299 DOC Inlet Module Replacement. Also acting as a high-efficiency direct-fit DOC filter alternative, this brand-new flow-through catalyst module serves as a direct counter-part to OEM cross-references A035H234, 4965222, 4965222NX, 5287477, 5287477NX, 5287477RX, and Q621299. Engineered for exact physical proximity within medium-duty commercial vehicles, it installs cleanly with no exhaust system modifications, carries zero core charge, and ships free within the continental United States.

Cummins A035H234 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 (2871451), and (2) heavy-duty clamps (2871861).
• Component Only: Includes core unit only. Hardware items excluded.

Key Features & Specifications for Part A035H234 / 4965222

• 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.
• 求EPA Compliant: Meets federal emissions standards for legal installation nationwide.
• Fast Free Shipping: Free ground freight within the continental United States. Orders confirmed before 2:00 PM Eastern ship out the same business day.

Cummins Vehicle Fitment Guide

Direct alternative solution for approximately 2007 to 2009 model year commercial vehicles running EPA07 medium-duty regional transportation and vocational architectures with horizontal chassis exhaust configurations. Deployed widely across standard Class 6, Class 7, regional box lines, delivery trucks, municipal frameworks, and passenger fleets:

• Engine Platforms: Cummins ISB 6.7L and PACCAR PX-6 medium-duty engine layouts running under alignment parameters.
• Freightliner Applications: Medium-duty box and local distribution layouts including Business Class M2 106 configurations matching component reference A035H234.
• Kenworth Applications: Conventional medium-duty trucks including Kenworth T270 and T370 configurations running under tracking parameters.
• Peterbilt Applications: Regional distribution and city delivery vehicle models including vocational conventional 335, 337, and 348 platforms aligned to number 4965222.
• International / Navistar Applications: Medium-duty vocational vehicle networks and regional distribution configurations matching 5287477 specifications.
• Bus Fleet Systems: Heavily optioned across major passenger transit setups, commercial regional shuttles, and school route buses built by Blue Bird, Thomas Built, and Gillig transit chassis configurations.

Compatible OEM Master Assembly Numbers: 4965044, 4965148, 4965176

Signs Your Diesel Oxidation Catalyst (DOC) Needs Replacement

• Frequent, unprompted, or incomplete DPF regeneration cycles triggered by active trouble codes matching A035H234 / 4965222
• 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
• 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.