Frequently Asked Questions About International RH DPF & Mufflers

What International RH model years are these DPF systems and mufflers compatible with?

These DPF systems and mufflers are designed for International RH models from 2018 to present. They're specifically engineered for trucks equipped with Cummins X15 and International A26 engines. Always verify your engine type and emission year before ordering, as pre-2018 models may have different mounting configurations and sensor locations.

How difficult is the installation process, and what tools are required?

Installation typically takes 3-4 hours for experienced technicians. You'll need standard shop tools including impact wrenches, torque wrenches, and jack stands. The most challenging aspects are aligning the heavy DPF unit (weighing 80-100 lbs) and ensuring proper gasket sealing. Many customers recommend having a second person assist with positioning. New clamps and gaskets should always be used during installation to prevent exhaust leaks.

What's the difference between OEM and aftermarket DPF options for the International RH?

OEM DPFs meet exact factory specifications and typically last 200,000-300,000 miles with proper maintenance. Aftermarket options can save 30-50% on cost and often feature improved flow designs, but verify they meet EPA compliance standards. Look for units with stainless steel construction and ceramic substrates rated for at least 1,200?F continuous operation. All our aftermarket options carry DOT certification.

How often should I clean or replace my International RH DPF, and what are the warning signs?

DPF cleaning is recommended every 150,000-200,000 miles under normal operating conditions. Warning signs include frequent regeneration cycles, reduced fuel economy (more than 15% drop), check engine lights with codes P2002 or P244A, and excessive black smoke. If your DPF requires regeneration more than once per day or shows backpressure readings above 2.5 PSI at idle, it's time for service or replacement.

Are there different muffler styles available, and how do they affect sound levels?

We offer three main styles for International RH trucks: straight-through designs that reduce backpressure but increase sound by 3-5 dB, chambered mufflers that maintain near-stock sound levels while improving flow, and hybrid designs that balance performance and noise reduction. All options maintain compliance with DOT noise regulations (80 dB limit). Polished stainless and aluminized finishes are available, with stainless offering 5-7 years longer service life in harsh climates.