Frequently Asked Questions About International PayStar 5000 DPF & Mufflers

Will these DPF and muffler systems fit my specific PayStar 5000 model year?

Our DPF and muffler systems are designed to fit International PayStar 5000 models from 2007-2017. However, compatibility can vary based on your engine type (MaxxForce 11, MaxxForce 13, or Cummins ISX) and whether you have a set-forward or set-back front axle configuration. We recommend checking your VIN or calling our tech support at 1-888-875-7787 with your truck's specifications to ensure proper fitment before ordering.

How difficult is the installation process, and what tools will I need?

Installation typically takes 3-4 hours for experienced mechanics and requires standard shop tools including impact wrenches, jack stands, and exhaust hangers. The most challenging aspect is properly aligning the DPF unit with existing mounting brackets. You'll need to support the exhaust system during installation to prevent damage to flex pipes. Many customers report that having a helper makes the job significantly easier, especially when positioning the heavier DPF units.

What's the difference between OEM and aftermarket DPF systems in terms of quality and lifespan?

OEM DPF systems typically last 200,000-300,000 miles with proper maintenance, while quality aftermarket units generally achieve 150,000-250,000 miles. The main differences are in the catalyst substrate density and stainless steel grade used. Aftermarket options offer significant cost savings (usually 40-60% less than OEM) and often include improved designs that address common OEM failure points, such as better heat shielding and reinforced mounting brackets.

Do these mufflers change the sound level or exhaust tone of my PayStar?

Most replacement mufflers maintain factory sound levels to comply with DOT regulations, typically measuring 80-85 decibels. However, we do carry performance mufflers that can reduce back pressure while staying within legal limits. These may produce a slightly deeper tone without excessive volume. If you're concerned about noise regulations in your operating area, stick with OEM-style mufflers that match original specifications.

What are the warning signs that my DPF needs replacement versus just cleaning?

DPF cleaning is recommended every 150,000-200,000 miles and can restore performance if you're experiencing frequent regeneration cycles or slight power loss. However, replacement is necessary if you see: cracked DPF housing, melted internal substrate visible through inspection ports, check engine lights with codes P2002 or P244B that return after cleaning, or excessive back pressure readings above 2.5 PSI at idle. Physical damage from road debris or internal substrate collapse always requires replacement rather than cleaning.