Restore exhaust filtration performance with this premium Skyline aftermarket Cummins 4395009 / 5579376 Diesel Particulate Filter (DPF) Replacement. This brand-new unit serves as a direct alternative to OEM part numbers 4395009, 5579376, A055R127, A064B971, 4395009NX, 4395009RX, 5579376NX, and 5579376RX. Engineered as an exact-fit replacement for commercial vehicles powered by Cummins B6.7 / ISB 6.7L, Cummins L9 / ISL 9L, PACCAR PX-7, and PACCAR PX-9 engines, it requires no exhaust system modifications for installation, carries zero core charge, and ships free within the continental United States.

Cummins 4395009 / 5579376 Cross Reference Interchange Matrix

How to Verify Your Unit: This direct-fit particulate filter replaces exhaust components stamped with housing, casting, or manufacturing tags matching any of the interchangeable assembly numbers or supplier cross-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 DPF, (2) 2871772 Original Equipment Quality gaskets, and (2) 5417471 clamps.
• DPF Only: Includes the replacement DPF filter only. Installation gaskets and clamps are not included.

Key Features & Specifications for Part 4395009 / 5579376

• 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 zero exhaust system modifications required.
• Substrate Performance Matrix: Advanced flow-through wall-flow 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 federal emissions standards for applicable particulate matter reduction requirements.
• Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day.

Cummins 4395009 Vehicle Fitment Guide

Direct alternative solution for approximately 2017 to Present commercial vehicles equipped with heavy-duty Cummins diesel powertrains. Optimized for:

• Engine Platforms: Cummins B6.7 (ISB 6.7L), Cummins L9 (ISL 9L), PACCAR PX-7, and PACCAR PX-9 variants. Used across standard medium-duty delivery, vocational refuse, and regional distribution applications.
• Chassis Fitments: This DPF configuration accommodates standard commercial trucks, conventional boxes, urban distribution units, and passenger fleet platforms:
  • Kenworth DPF Applications: Medium and heavy conventional platforms including T270, T370, T280, T380, and T480 configurations matching core tag 4395009.
  • Peterbilt DPF Applications: Commercial vocational and regional haul setups including 337, 348, 536, 537, and 548 chassis matching line element 5579376.
  • Freightliner DPF Applications: Business Class M2 106 and M2 112 distribution and severe-service models.
  • International / Navistar DPF Applications: Work-ready vocational models from the MV Series and HV Series.
  • Western Star DPF Applications: Premium vocational configurations built on Cummins and PACCAR engine blocks.
  • Bus Fleet Layouts: Frequently installed on Blue Bird transit, shuttle, and school bus chassis setups.

Compatible OEM Master Assembly Numbers: 4395009, 4395009NX, 4395009RX, 5579376, 5579376NX, 5579376RX, A055R127, A064B971

Signs Your Cummins DPF Needs Replacement

• Frequent, unprompted, or incomplete DPF regeneration cycles linked to fault codes matching 4395009 / 5579376
• Excessive particulate soot loading or exhaust face-plugging at the filter module core face
• Active dashboard diagnostic trouble codes (DTCs) signaling low soot capacity or filter cracking
• Unexplained commercial engine backpressure increases or gradual exhaust system power loss

*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 filter unit casing before placing an order.

Disclaimer: Product images for reference only. Final replacement hardware items matching OEM 4395009 / 5579376 such as gaskets, clamps, and sensor ports depend on your kit configuration. Selecting the "Full Kit" option adds the explicitly listed installation components to your shipment.