Detroitengine platform
Detroit Diesel (Daimler) engines power Freightliner and Western Star trucks. We use Detroit DiagnosticLink to read fault codes, clear aftertreatment derates, and service the full DD lineup from the DD16 down to the DD5 medium-duty.
Detroit engines in service
The Detroit engine model numbers in production and in service across Class 5-8 commercial trucks over roughly the last 15 years. MTG diagnoses and services every one of these.
15.6L heavy-duty; severe-duty and heavy-haul Class 8.
14.8L heavy-duty flagship (Gen 5 current); the most common Detroit big-bore.
12.8L heavy-duty; regional and line-haul Class 8.
7.7L medium-duty (2020+); Freightliner M2 106Plus and Class 6-7.
5.1L medium-duty (2019+); Freightliner M2 106 and Class 5-6.
12.7L / 14L heavy-duty; Detroit's long-running pre-DD15 big-bore, produced through 2011 and still widely in service.
Diagnostics, not guesswork
We connect the right brand-specific diagnostic software for Detroit, pull both active and inactive fault codes, and read live data — soot load, differential pressure, NOx readings, EGT, fuel pressure, charging voltage — before recommending a single part. From forced DPF regens and SCR/DEF derates to no-starts, cooling faults, and air system service, our techs handle it in the shop or on the shoulder.
MTG Shops does not perform Detroit engine overhauls or in-frame / out-of-frame rebuilds in-house. We have quality partners in every market who specialize in Detroit overhauls. We handle the diagnosis, get the truck to the right specialist, and coordinate the handoff so your downtime stays minimal.
Get a bay time and a straight estimate.