Crossover Truck Tool Boxes

Shop crossover truck tool boxes, also called saddle boxes. A crossover box spans the truck bed just behind the cab and rests on both bed rails, giving you large, lockable storage while leaving the bed floor open beneath it. We carry crossover boxes for full-size and mid-size pickups in aluminum and steel from Weather Guard, UWS, Highway Products, TrailFX, Better Built, Dee Zee, RKI, Buyers Products, CamLocker, Westin, Brute and Magnum. Looking for other styles? Shop all truck tool boxes.

Crossover Box Lid Styles

• Single lid crossover tool boxes open with one wide lid for full access to the whole box.
• Gull wing truck tool boxes have two lids that open from each side of the truck, so you can reach tools from the driver or passenger side.

Profile and Tub Depth

Standard crossover boxes give the most capacity above the rails. Low profile truck tool boxes sit lower to keep more of your rear window view. Below the rails, deep and angled tubs extend further into the bed for more storage. Compare listed dimensions and volume on each product page.

Crossover Box Sizes

Crossover box length matches the width of your bed, not its length. Full-size pickups typically take a box around 69 to 72 inches; mid-size trucks such as the Tacoma, Colorado, Canyon, Ranger and Frontier take a box around 60 to 63 inches. Use the vehicle filter to see boxes that fit your truck.

Aluminum or Steel

Aluminum crossover boxes are lighter and resist rust without a coating, in bright, gloss black and matte black finishes. Steel boxes rely on a powder coat finish and usually cost less for the same size.

Crossover Truck Tool Boxes by Brand

• Weather Guard crossover boxes
• UWS crossover boxes
• Highway Products crossover boxes
• TrailFX crossover boxes
• Better Built crossover boxes
• Dee Zee crossover boxes
• RKI crossover boxes
• Buyers Products crossover boxes
• CamLocker tool boxes
• Westin crossover boxes
• Brute crossover boxes
• Magnum crossover boxes

Crossover Truck Tool Box FAQs

Is a saddle box the same as a crossover box?

Yes. Saddle box and crossover box are two names for the same style: a box that spans the bed behind the cab and rests on both bed rails.

Should I get a single lid or gull wing crossover box?

A single lid opens the whole box at once and is the most common choice. A gull wing box has two lids, so you can reach tools from either side of the truck without walking around it.

Does a crossover box block the bed?

No. It sits on the bed rails, so the bed floor beneath it stays open for sliding in long material.

What is a deep or angled tub?

The tub is the part of the box below the lid. A deep tub extends further down into the bed, and an angled tub is shaped to add volume while clearing the bed. Both add storage over a standard tub.

Can I use a crossover box with a transfer tank?

Yes, with an L-shaped transfer tank, whose lower section leaves room for a crossover box above it. Check the tank and box dimensions to confirm clearance. See fuel transfer tanks.