Semi Truck Saddle Tool Box with Two Steps, 18in Wide β€” Aluminum Step Box

$599.75
SKU: STB-18I-OW-CC In Stock

Aluminum saddle tool box with two punched-tread steps. 18in wide, gas strut, lockable. Brackets sold separately.

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Field-Tested, Not Just Listed Every product in our catalog runs on real flatbed loads before it ships.

About This Product

A saddle tool box, a step tool box and a step box are one object. It fills the empty frame rail between the fuel tank and the quarter fender, with two steps at the front. Most tractors leave that space empty. This fills it and keeps the step.

Ask anyone who has torn a box off a frame: bolts through the floor of a box full of chain pull through aluminum. This one is not bolted to the frame. It sits on brackets that carry the weight, and those bolt or weld to the rail. Brackets sold separately.

The lid opens across the whole box rather than a narrow hatch, so a coiled chain goes in flat. A gas strut holds it up. Chains rust in an open box. This one closes onto a rubber seal running the full perimeter. It locks, and two keys come with it. Lid and both steps carry punched tread formed into the aluminum.

Measure the gap between your fuel tank and the quarter fender. That picks the width, not the make. The 18in is the widest we stock, so if the gap takes it, this is the one to drill the frame for.

Technical Details

Width 18in
Box Dimensions 24.5in x 28.4in x 18in
Material Aluminum, welded
Lid Punched tread, wide opening, gas strut
Lid Seal Rubber, full perimeter
Steps Two, punched tread aluminum
Latch Recessed T-handle, lockable
Keys Two supplied
Mounting Brackets, bolt-on or weld-on (sold separately)
Shipping Weight 41.5 lbs
Shipping Carton 30 1/4in x 20in x 26 3/4in
Item β„– STB-18I-OW-CC

Key Features

Two Steps and a Tool Box in One
Fills the empty frame rail between the fuel tank and the quarter fender, and you still climb on it.
Sits on Brackets, Not on Bolts
The brackets carry the weight and bolt or weld to the rail, so nothing is pulling through the floor of a loaded box.
Punched Tread, Formed In
The anti-slip pattern is pressed into the aluminum on the lid and both steps. Nothing to peel off or wear away.
Wide Lid, Gas Strut, Lock
Opens across the whole box and stays up on its own while both hands are busy. Recessed T-handle locks.

Best For

Where it goes
The open frame rail on a tractor, between the drive axle and the fuel tank.
What it holds
Binders, 3/8 chain, tire chains, edge protectors, gloves and fluids, out of the cab and off the deck.
Picking a width
Measure the gap on your own truck. Fitment is set by the build, not by the make.
Safety Tip

Mount on brackets, never bolted straight through the frame flange. Check the bracket hardware after the first few loads and at every inspection, and keep heavy chain low and centred in the box.

Questions About This Product?

Talk to a real flatbed equipment specialist.

Orders placed before 2:00 PM CT are processed the same business day.

Google Reviews

What fleet operators and drivers say

5.0

87 reviews on Google. Every one of them five-star.

Real feedback from flatbed drivers, fleet managers, and shop operators who buy from us regularly. We don’t pay for reviews. We earn them.

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Alex Sorokin ★★★★★

“I own a small trucking company in Charleston, SC, and we’ve been ordering from Cargo Control Center for the past couple of months after a recommendation. I have to say, we’re really impressed with the quality and the price of their equipment. We’ve been using their…”

Alex Sorokin, on Google

Tatiana Sorokina ★★★★★

“Got 2 4ft tarps and 2 8ft tarps for my husband’s birthday since he drives a flatbed. It’s been a while now, and he’s been using them non-stop—says they’re the best tarps he’s ever had. They seriously withstand everything! Super tough and still look like new.”

Tatiana Sorokina, on Google

Uliana Pyrozhuk ★★★★★

“Great shop for trucking equipment and supplies! Excellent selection, top-notch quality, and competitive prices. The staff is super helpful and knowledgeable. Highly recommend for anyone in the trucking industry!”

Uliana Pyrozhuk, on Google

$599.75 In stock
Semi Truck Saddle Tool Box with Two Steps, 18in Wide β€” Aluminum Step Box $599.75 In stock
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