About Tri-County Diesel Marine
Tri-County Diesel Marine in Bellingham, Washington handles diesel engine repair work from a shop location serving the northern Puget Sound region and I-5 corridor. The business operates within a 15-mile service radius, reaching customers in Lynden, Blaine, and Sedro-Woolley, making it accessible to owner-operators and fleet managers moving freight through the Pacific Northwest. Diesel engine repair is the core focus, with the shop equipped to diagnose and service heavy-duty diesel powerplants for trucks, marine equipment, and industrial applications. Call (360) 733-8880 for diesel engine repair.
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Our Services
Diesel Engine Repair
Diesel Specialist
Customer Reviews
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Verified Customer
Google Review
If 6 stars were available, Tri County would get an easy 6 stars from me. We retained Tri County to get our newly purchased Jeanneau 469 ready for the season. Three weeks after the service, the service manager, Austin, met us at the boat to assist with some fine tuning and troubleshooting. We are customers for life!
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Verified Customer
Google Review
Austin, Mike Rusk, and the team at Tri-County are great! We have used Tri-County numerous times for the company that I work for. We routinely fly Tri-County mechanics over to Hawaii to work on our vessels. Excellent attention to detail and after-sales service, highly recommend.
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Verified Customer
Google Review
Wife Carol and I heard noise in engine proceeding across Whidby Island in very high seas, of course a field of crab pots kept us on our toes. Suddenly no engine power the transmission stopped. A tow in to Bellingham and a search led to Tri ...