If you’re in the market for a purpose-built work truck — one that can handle oilfield, construction, or fleet maintenance — STI (Service Trucks International) should be at the top of your list. At Star Truck Equipment in Wharton, TX, we carry STI products and upfit trucks for buyers across Texas and Louisiana. Here’s everything you need to know about the STI lineup.
What Is STI (Service Trucks International)?
Service Trucks International is a leading manufacturer of heavy-duty service truck bodies and upfitted work trucks. STI builds bodies designed for demanding trades — mechanics who work on equipment in the field, fleet operators running fuel and lube routes, and contractors who need a crane on their truck every single day.
STI bodies are built tough, with heavy-gauge steel construction, intelligent storage layouts, and options engineered for real-world durability. They’re not the cheapest option — and they’re not meant to be. They’re built for buyers who need their truck to work as hard as they do.
STI Product Lineup Overview
1. STI Mechanics Trucks
The STI mechanics truck is the flagship of the lineup. These units are purpose-built for field service technicians — think equipment repair crews, oil and gas field mechanics, and fleet maintenance operations.
STI mechanics truck bodies typically feature:
- Deep, organized tool storage with lockable drawers and compartments
- Built-in air compressor mounts and plumbing runs
- Generator prep options for 120V or 240V power in the field
- Custom crane body integration for combination crane/service setups
- Available in SRW and DRW configurations to fit your chassis
If you’re running a Ford F-550, Ram 5500, or similar chassis cab and you need a mechanics body that can take a beating, the STI mechanics truck is a serious contender.
👉 Explore our service bodies for sale
2. STI Crane Bodies
STI crane bodies are designed to pair with truck-mounted cranes — including Tiger Cranes, Autocrane, and other leading brands. These bodies offer a stable, reinforced platform for crane operation, with built-in subframe support and strategic outrigger placement.
Key features of STI crane bodies:
- Heavy-duty structural steel subframe for crane mounting
- Outrigger pockets positioned for maximum stability
- Integrated tool and parts storage on both sides
- Compatible with a wide range of crane tonnage classes (from 3-ton to 10-ton and up)
- Custom cable and hose management routing
Whether you’re doing oilfield equipment lifts or utility infrastructure work, an STI crane body gives you a purpose-built platform rather than a bolted-together workaround.
👉 See our crane bodies for sale
3. STI Lube Trucks
Fleet maintenance operations need a reliable way to deliver oil changes, greasing, and fluid top-offs to equipment in the field — and STI lube trucks are built for exactly that.
STI lube truck bodies typically include:
- Multiple fluid tank compartments (engine oil, gear oil, antifreeze, grease)
- Reel mounts for fluid delivery hoses
- Pump systems and flow meters
- Lockable compartment access for fluid product security
- DOT-compliant tank configurations
Oilfield companies, large construction fleets, and agricultural operations in Texas and Louisiana commonly run STI lube trucks. If your crew is servicing equipment out in the pasture or on a remote drilling site, a properly spec’d lube truck saves hours every week.
4. STI Fuel Service Bodies
Similar to lube trucks, STI fuel service bodies are built to transport and dispense diesel or other fuels in the field. These are purpose-built for operations that can’t afford downtime due to empty tanks on equipment.
STI fuel service bodies can be configured with:
- DOT-compliant fuel tanks (single or multiple)
- High-flow pump systems with hose reels
- Flow meters for accurate fuel tracking
- Lockable compartments for tools and spare parts
- Combo lube-and-fuel configurations for maximum versatility
If you’re running an oilfield operation, large-scale construction site, or ag operation in Texas or Louisiana, a fuel service truck pays for itself quickly in reduced equipment downtime.
How STI Compares to the Competition
STI often comes up against brands like Maintainer, Knapheide, and NAP (National Automotive Parts) in service truck comparisons. Here’s the quick version:
- vs. Maintainer: Both are strong. STI tends to offer more modular crane body integration; Maintainer has a longer production run on certain configurations.
- vs. Knapheide: Knapheide is excellent for lighter-duty service body applications. STI is built more toward heavy commercial and oilfield environments.
- vs. NAP: NAP offers custom service bodies at competitive price points; STI has more standardized heavy-duty engineering with proven field performance.
For Texas and Louisiana buyers running hard in demanding industries, STI is consistently one of the top performers.
Get STI Products at Star Truck Equipment
We upfit trucks with STI bodies right here in Wharton, TX — centrally located to serve customers from Houston to Corpus Christi, and from Baton Rouge to Lake Charles in Louisiana.
Whether you need a full mechanics truck, a crane body setup, a lube truck, or a fuel service body — we can help you spec the right unit for your operation and get it installed on your chassis.
📞 Call us today: (979) 532-1486
📍 2507 County Rd 231, Wharton, TX 77488
👉 Browse all service bodies | View crane bodies | See our STI page
We work with fleet buyers, contractors, and owner-operators across Texas and Louisiana. Give us a call or stop by — we’ll help you get the right STI setup for your truck and your budget.
