Frequently Asked Questions About Kenworth T880 DPF & Mufflers

What model years of Kenworth T880 are these DPF systems and mufflers compatible with?

Our DPF systems and mufflers are designed for Kenworth T880 models from 2013 to present. However, compatibility can vary based on your specific engine configuration (Paccar MX-13, Cummins ISX15, or Cummins X15). Always verify your engine model and EPA certification year before ordering, as emissions equipment requirements changed in 2017 and again in 2021. Contact our team with your VIN for exact fitment confirmation.

How difficult is it to install a replacement DPF or muffler on my T880?

Installation typically takes 2-4 hours for experienced technicians. The DPF replacement requires disconnecting sensors, V-band clamps, and mounting brackets. You'll need standard hand tools plus a torque wrench for proper clamp specifications (typically 45-50 ft-lbs for V-bands). The most challenging aspect is usually accessing the upper mounting points. We recommend having a second person assist with supporting the unit during installation. Professional installation is advised if you're not familiar with emissions systems.

What's the difference between OEM and aftermarket DPF units for the T880?

OEM DPFs use cordierite substrate material and typically last 200,000-300,000 miles with proper maintenance. Aftermarket options often use silicon carbide substrates, which can offer better thermal efficiency but may have shorter service life (150,000-250,000 miles). OEM units guarantee exact fit and maintain warranty compliance, while quality aftermarket options can save 30-40% in cost. Both must meet EPA standards, but aftermarket units may require more frequent cleaning intervals.

How do I know when my DPF needs replacement versus just cleaning?

Signs your DPF needs replacement include: frequent regeneration cycles (more than once per day), check engine lights with codes P2002 or P244B, excessive back pressure readings above 3.0 PSI at idle, or visible cracks in the housing. If your DPF has been cleaned 3-4 times or has over 250,000 miles, replacement is often more cost-effective than another cleaning. A professional inspection can measure ash load and flow rates to determine if cleaning will restore function.

What muffler options provide the best sound reduction without restricting exhaust flow?

For T880 applications, straight-through perforated core mufflers offer optimal flow with moderate sound reduction (typically 15-20 dB reduction). Chambered mufflers provide better sound control (20-25 dB reduction) but create slightly more back pressure. Most operators prefer 5-inch or 6-inch diameter mufflers depending on their engine size. Stainless steel construction is recommended for longevity, especially in northern climates where road salt is used. Consider your local noise ordinances when selecting - many municipalities require keeping exhaust noise under 80 dB.