Fleet and Commercial Body
Truck Toolbox, Cross Box and Crane Body Installation
Typical range
$1,500 to $10,000
Shop hours
10 to 40
Labor rate
$210/hr
The short answer
Toolbox and crane body installation covers cross boxes, side boxes, underbody boxes, and crane-equipped service bodies including subframe reinforcement and outrigger mounting. Work runs $1,500 to $10,000, or 10 to 40 hours at $210 per hour plus equipment. In shop install only.
01
What this work actually involves
Toolbox mounting looks trivial until you follow the load. A loaded cross box on a pickup rail puts several hundred pounds of concentrated weight on two bed flanges that were never designed for it, and on a truck running Inland Empire job sites over rough yard entries and unpaved staging areas, that flange cracks. The fix is not a bigger bolt. It is spreading the load with backing plates, isolating the mounting hardware so the steel box does not corrode the aluminum bed rail, and locating the fasteners where the structure can actually carry them.
Crane bodies are a different order of magnitude. A crane applies a moment load that increases with boom extension, and every bit of that moment goes into the subframe, the outrigger legs, and the chassis rails. Installation means calculating what the chassis can take, fabricating a subframe stiff enough to distribute it, and mounting outriggers so they plant on the pads instead of levering the body. We build the mounting structure, weld it, and reinforce the rails where the manufacturer requires it. Skipping that step produces a body that visibly twists on the first heavy lift.
One important scope line. We fabricate and install the mounting structure and the body. Crane load testing, capacity certification, and periodic inspection are performed by a certified crane inspector, not by this shop. We will coordinate the truck being available for that inspection, and we build the mounting to the crane manufacturer specification so it passes. In shop body, paint, structural, and equipment install only. Engine, drivetrain, and DOT inspection work are not performed.
Systems and brands we work on: Weather Guard, Knapheide, Reading.
Location: All work is performed at our Yorba Linda facility. We do not offer mobile, roadside, or fleet route service.
02
What the job includes
- Cross box, side box, chest box, and low profile toolbox mounting
- Underbody and between-the-rails box installation with clearance verification
- Backing plate and load spreading hardware fabrication at every mounting point
- Galvanic isolation between steel hardware and aluminum bed rails or bodies
- Crane body subframe fabrication and chassis rail reinforcement
- Outrigger and stabilizer leg mounting, pad fabrication, and clearance work
- Crane pedestal mounting to the manufacturer specification
- Compartment shelving, drawer unit, and divider installation inside boxes
- Box lighting, latch, and gas strut replacement and adjustment
- Refinish of fabricated structure and corrosion coating of all welds
03
When you need this service
- A cracked bed flange or split rail where a toolbox is mounted
- A toolbox that has shifted, rocked, or worn its mounting holes oval
- White corrosion powder around steel bolts through an aluminum bed rail
- Visible body twist or rack when the crane lifts near rated capacity
- Outriggers that lift the body rather than planting solidly on the pads
- A new crane or box on the shelf with no mounting structure on the truck
- Underbody boxes hanging low enough to catch on driveway transitions
04
How we do it, step by step
- 01
Load path and capacity review
Equipment weight, crane moment rating, and chassis capacity reviewed together before layout. The chassis has to carry the load, not just accept the bolt pattern.
- 02
Mounting layout
Fastener locations planned onto actual structure rather than onto sheet metal, with clearance checked against exhaust, fuel, air lines, driveline, and the full range of suspension travel.
- 03
Backing and reinforcement fabrication
Backing plates, spreader bars, and subframe reinforcement fabricated so concentrated equipment loads distribute into the frame rails instead of concentrating on four bolts and cracking a bed flange.
- 04
Welding and isolation
Structural welds run to the correct procedure for the base metal, and every dissimilar metal joint isolated so a steel fastener does not consume an aluminum rail.
- 05
Equipment mounting
Boxes, crane pedestal, and outriggers set, aligned, and torqued to specification, with outrigger geometry checked under deployment so the legs plant on their pads rather than lever the body.
- 06
Function and clearance testing
Boxes cycled and latches and gas struts adjusted, outriggers deployed and stowed through their full range, and every clearance rechecked with the suspension loaded and at full travel.
- 07
Coating and handoff
All fabricated structure and welds coated against corrosion, the installation documented in photographs, and the unit made ready for third-party crane load testing and certification where required.
05
Pricing and posted rates
| Item | Rate or range | Notes |
|---|---|---|
| Typical job range | $1,500 to $10,000 | Varies with extent of damage and parts availability |
| Shop hours | 10 to 40 | Quoted after teardown, not before |
| Body and paint labor | $210 per hour | 2026 posted rate |
| Paint supplies | $55 per paint hour | Calculated automatically on every estimate |
| Body supplies | $5 per body hour | Calculated automatically on every estimate |
| Parts | 100% markup under $100, 35% over | Special order parts require a non refundable deposit at order |
| Deposit | 50% at authorization over $2,000 | Additional 25% when parts arrive on jobs over $10,000 |
| Sales tax | 7.75% on parts and materials | Labor is not taxed |
Insurance billed jobs may be billed at carrier negotiated labor rates that differ from the posted retail rates above. See all posted rates.
07
Vehicles we do this work on
Vehicle
Utility Trucks
Utility trucks carry a compartmented service body loaded with tools, parts, and frequently a crane, and the compartments are where
Vehicle
Flatbed Trucks
Flatbed trucks carry unprotected loads on an open deck, so the deck, headboard, rub rails, and stake pockets take the damage rathe
Vehicle
Bucket Trucks
Bucket trucks carry an aerial device whose loads run through a torsion box and outrigger structure into the chassis frame. Outrigg
Vehicle
Mobile Workshops
Mobile workshops carry benches, vises, compressors, welders, and dense tool inventory, which makes weight and mounting the definin
Vehicle
Dump Trucks
Dump bodies take abrasive load impact, hoist stress, and tailgate hardware abuse that no other truck body sees. Floor wear-through
Vehicle
Tow Trucks
Tow trucks take structural load from vehicles they carry and pull, so the deck, subframe, wheel lift mounting, and tie-down points
08
Questions about toolbox and crane body installation
Frequently asked questions
What does toolbox and crane body installation cost?
Work runs $1,500 to $10,000, or 10 to 40 hours at $210 per hour, plus the equipment and fabricated material. A pair of side boxes with backing plates sits at the low end. A crane body with fabricated subframe, rail reinforcement, and outrigger mounting sits at the high end. Deposits are 50 percent at authorization over $2,000, with an additional 25 percent when parts arrive on jobs over $10,000.
How much downtime does a crane body install take?
Toolbox mounting is usually one to two working days. A crane body installation runs seven to fifteen working days, because subframe fabrication, welding, reinforcement, and outrigger fitting each have to be done in sequence and checked. Add time for third-party crane certification, which is scheduled separately and is not performed by this shop.
Do you certify the crane after installation?
No. We fabricate and install the mounting structure, the subframe, and the outriggers to the crane manufacturer specification, and we document the installation. Load testing, capacity certification, and periodic crane inspection are performed by a certified crane inspector. We will coordinate scheduling so the truck is available and ready when that inspector arrives.
Why did my toolbox crack the bed rail on my last truck?
Concentrated load on unsupported sheet metal. A loaded cross box puts several hundred pounds onto two bed flanges through four bolts, and on rough job site entries that flange fatigues and splits. Backing plates spread that load across a much larger area. Steel bolts through an aluminum rail with no isolation make it worse by corroding the hole out from the inside.
Do you service the crane hydraulics or the truck itself?
No. We handle mounting structure, fabrication, body work, and equipment installation. In shop body, paint, structural, and equipment install only. Engine, drivetrain, or DOT inspection work is not performed at this facility, and crane hydraulic service belongs with your crane vendor. What we build is the structure that everything else bolts to, and we build it so the chassis can actually carry the load.
09
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More fleet and commercial body work
Ready to move on toolbox and crane body installation? Bring it to Yorba Linda.