Light and Medium Diesel Repair Services

ASE-Certified Technicians | Same-Day Service | Since 1915

ASE-Certified Technicians

Same-Day Service

Since 1915

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Top-Quality Diesel Mechanics in Windsor Mill, MD

Trust your light- or medium-duty diesel vehicle repair or maintenance needs to the top diesel mechanics at Stirn's Garage Inc. Our ASE-certified mechanics have the experience and knowledge to ensure that your engine gets the best service and repair possible.


All work is completely covered by a one-year or 12,000-mile warranty. Need a tow? Don't panic. We recommend Rockdale Towing in Reisterstown, MD, who will tow your vehicle to our shop for fast and affordable repairs. Call us at (410) 944-2838 to schedule an appointment.

Comprehensive Light- and Medium-Duty Diesel Services

  • ACM inspection station for trucks over or under 10,000 pounds
  • Complete engine service and replacement
  • Diagnostics and repair
  • Ford diesel service and repair
  • Dodge diesel service and repair
  • Navistar caterpillar repair
  • GM diesel service and repair
  • Towing

Same-Day Diesel Repair Estimates

Ask About Our Warranties

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(410) 944-2838

(410) 944-2838
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I had several mechanics tell me to throw out my 2005 car due to bad gasket and engine damage, or get new engine. But there was nothing actually wrong with it besides the thermostat. Stirn’s fixed it, flushed my coolant and I just drove it 400 miles with no overheating or anything. I don’t even live in MD, and this place was highly recommended by another smaller shop who couldn’t see me. So it sounds like they usually have availability too.

- ms413k5, Google Review

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Stirn's Garage Inc

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