Colorado · Wyoming · Texas
Truck & trailer repair shop
// Heavy- & medium-duty diesel

Caterpillar (CAT)engine platform

Caterpillar exited on-highway engine production around 2010, but Cat-powered trucks remain in service across thousands of fleets. We diagnose and service the ACERT-era engines still running in Class 5-8 vocational and line-haul trucks.

Model numbers — Class 5-8, last ~15 years

Caterpillar (CAT) engines in service

The Caterpillar (CAT) 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.

C15 / C15 ACERT

15.2L heavy-duty; the last Cat big-bore, widely in service.

C13 / C13 ACERT

12.5L heavy-duty; line-haul and vocational Class 8.

C9 / C9 ACERT

8.8L; vocational and refuse Class 6-8.

C7 / C7 ACERT

7.2L; medium-duty Class 6-7.

C12

12L; older heavy-duty, still in service.

3406E

14.6L; pre-ACERT big-bore, still in service in older Class 8.

C18

18L; severe-duty and vocational heavy-haul.

How MTG works on Caterpillar (CAT)

Diagnostics, not guesswork

We connect the right brand-specific diagnostic software for Caterpillar (CAT), 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.

No overhauls — specialized partners who do

MTG Shops does not perform Caterpillar (CAT) engine overhauls or in-frame / out-of-frame rebuilds in-house. We have quality partners in every market who specialize in Caterpillar (CAT) overhauls. We handle the diagnosis, get the truck to the right specialist, and coordinate the handoff so your downtime stays minimal.

Schedule Caterpillar (CAT) service

Get a bay time and a straight estimate.

(303) 476-3622