O'Briens Diesel & Performance

O'Briens Diesel & Performance operates as Gulfport's premier diesel-focused repair facility, earning a 4.6-star average across 120 verified customer reviews. The shop's service area spans the Mississippi Gulf Coast, accommodating drivers from Biloxi, Ocean Springs, and surrounding communities who rely on diesel-powered pickups and commercial vehicles. Their facility handles light-duty diesel repairs across major domestic platforms, including Ford Powerstroke, Chevrolet Duramax, and Ram Cummins derivatives, alongside Caterpillar, Cummins, and Mercedes-Benz diesel powertrains found in commercial applications.

The technical depth at O'Briens distinguishes them from general-purpose mechanics. Their website lists explicit brand specialization for each platform, from early 7.3L Powerstroke generations through current 6.7L Cummins derivatives, indicating franchise-level training and tooling specific to each manufacturer. The parts catalog reveals in-house transmission and drivetrain capabilities, including Suncoast torque converteroptions for heavy-duty upgrades. Performance electronics and tuning services suggest capacity beyond routine maintenance, addressing owners seeking modified calibrations or diagnostic clarification for advanced onboard systems.

Customer narratives from verified reviewers illuminate the shop's operational character. Ernest Zeeto recounts dropping his F250 for what other shops described as insurmountable problems, praising technicians who "pin point the problem, talk to you about your option" before proceeding. Nick Anderson's 2022 Duramax received same-week turnaround between Wednesday drop-off and Friday pickup, resolving an issue that prompted consultation before repair authorization. Tiffany Benning specifically mentions ongoing care for a 2001 7.3L Powerstroke that "they've got it running better than ever" following multiple service visits.