When your crew is working remote job sites in the Texas oilfield, along pipeline rights-of-way, or on Gulf Coast construction projects, you need a mechanics truck that works as hard as you do. STI (Service Truck International) mechanics truck bodies are purpose-built for exactly that — heavy-duty field service work where downtime isn’t an option.
At Star Truck Equipment in Wharton, TX, we spec, install, and deliver STI mechanics trucks to fleets across Texas and Louisiana. Here’s everything you need to know about STI’s mechanics truck lineup.
What Is a Mechanics Truck?
A mechanics truck (also called a service crane truck or lube/mechanics truck) combines a heavy-duty service body with a truck-mounted crane — giving a field mechanic everything they need to diagnose, repair, and maintain heavy equipment without returning to the shop. STI mechanics trucks typically run on Class 5–7 chassis cabs (Ford F-550, F-600, Ram 5500, or equivalent medium-duty trucks).
STI Mechanics Truck Body Models
STI offers several mechanics truck body configurations built for different capacity needs:
- STI Model 1100 Series — Entry-level mechanics body on F-450/F-550. Steel construction, multiple compartment configurations, crane-pad ready. Ideal for contractors and smaller fleet operations.
- STI Model 1500 Series — Mid-tier mechanics body with increased compartment depth, heavier steel gauge, and integrated crane mount. Popular with oilfield service companies and pipeline contractors.
- STI Model 2000 Series — Full-spec heavy-duty mechanics truck body for Class 6–7 chassis. Maximum storage, reinforced subframe, 5–10 ton-meter crane capacity. Standard choice for large fleet maintenance programs.
- STI Crane-Ready Mechanics Body — All STI mechanics truck bodies come crane-ready and pair factory-direct with Tiger Cranes for a complete turn-key build at Star Truck Equipment.
Chassis Guide for STI Mechanics Trucks
| Chassis | GVWR | Best STI Config | Notes |
|---|---|---|---|
| Ford F-550 | 19,500 lb | STI 1500 Series + Tiger 4–6 ton-m crane | Most popular mechanics truck platform in Texas |
| Ford F-600 | 22,000 lb | STI 1500–2000 Series | More payload margin for heavy crane + toolbox build |
| Ram 5500 | 19,500 lb | STI 1500 Series + Tiger 4–6 ton-m crane | Good alternative when Ford allocation is tight |
| International MV / Hino 258 | 25,500 lb | STI 2000 Series + Tiger 7–10 ton-m crane | Best for maximum payload — oilfield heavy fleet |
Who Uses STI Mechanics Trucks?
STI mechanics trucks are a proven choice across multiple Texas and Louisiana industries:
- Oilfield service companies — Eagle Ford, Permian Basin, and Gulf Coast operators rely on STI mechanics trucks to keep drilling and production equipment running in the field
- Pipeline construction contractors — From bend to bend, pipeline crews need a crane + mechanics body that can lift and position equipment along ROW
- Construction equipment fleets — Excavator, crane, and heavy equipment fleets use STI mechanics trucks to handle track shoe repairs, cylinder swaps, and component pulls on-site
- Agricultural operations — Large Texas cattle and row-crop operations use STI mechanics trucks for combine, tractor, and irrigation equipment repairs
- County road departments — Public works crews across Texas use STI mechanics trucks for road grader, motor grader, and culvert maintenance
STI Mechanics Truck vs. Competitors
Compared to national brands like Maintainer or Knapheide, STI has several advantages for Texas and Louisiana buyers:
- Local availability — STI is made in Waco, TX and available at Star Truck Equipment in Wharton — faster delivery, no cross-country freight
- Turn-key crane builds — We install Tiger Cranes on STI bodies here at the shop; no need for a separate crane installer
- Texas oilfield spec — STI’s heavy-gauge steel and reinforced compartments are spec’d for the abuse of oilfield field service work
- Full lineup from one source — Service bodies, crane bodies, mechanics trucks, lube trucks, and fuel service bodies — all STI, all at Star Truck Equipment
Ready to Order an STI Mechanics Truck?
We stock and install STI truck bodies at our Wharton, TX facility. Whether you need a single mechanics truck for your crew or you’re outfitting an entire field service fleet, we can spec the right body, source the chassis, and have your truck ready to work.
Call us at (979) 532-1486 or visit us at 2507 County Rd 231, Wharton, TX 77488. We serve fleets across Texas and Louisiana — from Houston to San Antonio, Corpus Christi to Shreveport.
Also see: STI Service Bodies | STI Crane Bodies | All Crane Bodies | All Service Bodies