Contact

  • 898 Valentine Ave SE, Pacific 98047
  • (253) 691-6645
  • frontdesk@sttrwa.com
  • Roadside Service 24/7/365

Exhaust

Exhaust System Services for Commercial Trucks & Trailers

DPF, Mufflers, Pipes & Emissions Repairs | STTR, Inc. – Pacific, WA

Exhaust issues don’t just affect your engine’s performance—they can lead to costly downtime, DOT violations, and environmental penalties. At Sound Truck & Trailer Repair (STTR, Inc.), we provide expert exhaust system diagnostics, repairs, and replacements for semi trucks, heavy-duty trucks, and commercial trailers across the Puget Sound region.

🔧 Complete Exhaust System Repairs

Our technicians are trained to inspect, repair, and replace every component of your truck exhaust system. Whether you need a simple muffler replacement or a full DPF service or DPF replacement, STTR delivers professional solutions with fast turnaround times.

We service and replace:

  • Exhaust Manifolds

  • Mufflers & Resonators

  • Catalytic Converters

  • Diesel Particulate Filters (DPF)

  • Exhaust Flex Pipes

  • Clamps, Gaskets & Mounting Hardware

  • Tailpipes & Stacks

  • Heat Shields & Hangers

  • SCR Systems (Selective Catalytic Reduction)

  • NOx Sensors, DEF Heaters & Injectors

We work on OEM and aftermarket systems, using high-quality parts and secure installations that withstand vibration, heat, and road wear.

⚠️ Exhaust System Symptoms to Watch For

  • Strong exhaust odors in the cab or around the trailer

  • Visible smoke from tailpipe

  • Increased engine noise or rattling

  • Failed emissions tests

  • Poor fuel economy or loss of power

  • Active DPF/Check Engine warning lights

If you notice any of these signs, don’t wait—your safety, performance, and DOT compliance may be at risk.

🌎 DPF Cleaning & Emissions Compliance

Diesel Particulate Filters (DPFs) are critical for emissions control, but they require proper maintenance and cleaning to function correctly. We provide:

  • DPF filter removal & replacement

  • DPF cleaning (off-truck service coordination available)

  • Diagnosis of regeneration issues

  • DEF system diagnostics and repairs

  • Emission sensor replacement

  • SCR and DOC system inspection

STTR helps you meet federal and Washington State emissions regulations, avoiding penalties and downtime from failed inspections.

🧰 Fleet Exhaust Services

We support fleet maintenance programs with regular exhaust system inspections and scheduled DPF service intervals. Keeping your fleet compliant and on the road is our top priority.

📍 Schedule a service call 24 hours a day, 7 days a week, 365 days a year

Our exhaust services are available at our full-service repair facility in Pacific, WA Monday – Friday, 8 AM – 5 PM

  • 898 Valentine Ave SE, Pacific, WA 98047

  • Open Monday through Friday, 8:00 AM – 5:00 PM

  • Serving truckers and fleets throughout the Puget Sound

Why Choose STTR for Exhaust System Repairs?

  • ✔ Heavy-Duty Truck & Trailer Exhaust Specialists

  • ✔ DPF, DEF, SCR & Emissions Expertise

  • ✔ Quick Diagnosis & Repairs

  • ✔ DOT & EPA Compliant Solutions

  • ✔ Trusted Since 2008 by Fleets & Independent Drivers

📞 Call (253) 691-6645 to schedule your exhaust service or request a quote online at www.STTRWA.com.
Breathe easier, run cleaner—trust STTR for professional exhaust system care.

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