Restore commercial fleet emissions performance with this premium Skyline aftermarket Cummins / PACCAR 4394980 / 5633697 / A055T679 / 5506859 Diesel Particulate Filter (DPF) Replacement. This brand-new unit serves as a direct alternative to high-traffic factory configurations 4394980, 5633697, A055T679, 5506859, A061S599, 5633712, 2064075X, and 2663949XS. Engineered as an exact-fit replacement for medium and heavy-duty 2017 to present aftertreatment assemblies running Cummins B6.7, ISB 6.7L, L9, ISL 9L, PACCAR PX-7, and PACCAR PX-9 engine platforms, it requires no exhaust system modifications for installation, carries zero core charge, and ships free within the continental United States.

Cummins / PACCAR 4394980 Cross Reference

How to Verify Your Unit: This direct-fit particulate catalyst replaces elements stamped with factory housing numbers, tracking codes, or database identification plates matching any of the interchangeable manufacturer listings below:

Choose Your Kit Configuration

Select the configuration option from the choices above that matches your current fleet installation requirements:

• Full Kit (Best Value): Includes (1) Brand-New Filter Assembly, (2) OEM-quality mounting seals (2871772), and (2) high-torque installation clamps (5417471).
• DPF Only: Includes the core direct-fit replacement filtration element canister only. Gaskets and hardware clamps are excluded.

Key Features & Specifications for Part 4394980 / 5633697 / A055T679

• Proudly Built in the USA: Designed, engineered, and precision-manufactured in America.
• No Core Charge: 100% brand-new aftermarket component; eliminates core handling logistics, tracking administration, and return freight costs.
• Exact-Fit™ Technical Dimensions: Crafted with matching internal flow geometry, precise inlet/outlet port outer diameters, pre-machined sensor bosses, and factory orientation pin locations.
• Substrate Performance Matrix: High-efficiency wall-flow monolith channel loading ensures standard particulate containment and consistent regeneration backpressure levels.
• Industry-Leading Warranty: Backed by a full 3-year unlimited mileage warranty protection plan.
• EPA Compliant: Complies with federal Clean Air Act standards for legal installation nationwide on over-the-road engine families.
• Free Shipping: Free ground shipping to any commercial or residential warehouse within the continental United States. Orders submitted before 2:00 PM Eastern ship out the same business day.

Cummins / PACCAR Vehicle Fitment Guide

Direct alternative configuration for commercial vehicles and vocational equipment running approximately 2017 to present chassis setups. Tailored for:

• Engine Platforms: Cummins B6.7 (6.7L Inline 6), Cummins L9 (8.9L Inline 6), PACCAR PX-7, and PACCAR PX-9 setups.
• Chassis Fitments: This high-traffic geometry matches factory frame positions across major conventional lines:
  • Freightliner Platforms: Business Class medium and heavy-duty trucks including M2 106, M2 112, 108SD, and 114SD configurations.
  • Peterbilt Platforms: Vocations spanning class 6/7 conventional and medium models 337, 348, 536, 537, and 548.
  • Kenworth Platforms: Equivalent specialized distribution and distribution platforms matching factory index markers.
  • International / Navistar & Western Star: Regional delivery applications and vocational trucks running inline commercial power blocks.
  • Passenger Transit Infrastructure: Municipal transit, regional shuttle fleets, and vocational school bus lines.

Signs Your Diesel Particulate Filter (DPF) Needs Replacement

• Frequent, unprompted, or incomplete DPF regeneration cycles linked to active system errors tracking under numbers 4394980 / 5633697 / A055T679 / 5506859
• Abnormal accumulation of face soot loading or internal structural melting discovered during automated system check teardowns
• Active dashboard diagnostic trouble codes (DTCs) pinpointing excessive restriction or low catalyst flow capacity limits
• Loss of vehicle pulling efficiency, diminished fuel tracking stats, or excessive backpressure warnings on heavy haul lines

*Note: Always verify exact component layout using your vehicle's VIN, engine information tag, dealer build quote, or the active manufacturing numbers stamped directly into your existing canister assembly shell.

Disclaimer: Product images for reference only. Final hardware selections matching technical layout parameters depend on configuration. Selecting the "Full Kit" option adds the explicitly listed installation components to your shipment. Price is for (1) DPF.