Truck bed and body terminology: what the back of a truck is called

The back of a truck is the bed, on a pickup, also the box, which is the word Ford, GM and Ram use in their own parts books. The panel that drops at the rear is the tailgate, the side walls are bedsides, the wall behind the cab is the bulkhead. The rest of that vocabulary, in the words a salvage yard uses, is below.

Every part of a pickup bed, named

Ask for the wrong word and you get the wrong part. These are the names on our shelf tags:

• Bed, box, cargo box, the whole rear assembly; it unbolts from the frame, fuel filler and lamp wiring included.
• Bedside, one outer wall, a single stamping from bulkhead to taillight, so a crease mid-panel means a whole side.
• Bulkhead, the front wall facing the cab, cataloged as the front bed panel, sometimes called the headboard.
• Bed rail, the flat top edge; the plastic strip over it is a rail cap, and it hides drilled holes.
• Wheelhouse, the arch over each rear tire, also the wheel tub. The gap between them decides whether sheet goods lie flat.
• Tailgate, the hinged rear panel, and the most replaced body part on a pickup. Late ones carry a camera, step or power lock, so identical-looking gates can be wired differently; our used and new pickup tailgates by generation list the hardware.

Fleetside versus stepside: two shapes, one name per brand

A fleetside bed is the smooth full-width box that runs flush with the cab, rear wheels pushed into tubs inside the cargo floor. Chevrolet coined the name in its 1958 Apache marketing; every brand had its own word for the same idea. A stepside is the older narrow box with the fenders bolted outside it, leaving a flat step between cab and fender.

The difference is money, not vocabulary. A stepside fender bolts off, so a bent one is a cheap fix; on a fleetside the damaged panel is the whole bedside, which is why a complete used box often costs less than repairing one side and matching paint. Our used and take-off pickup beds are listed by style as well as length, because a fleetside box will not bolt onto a truck built as a stepside.

Short bed, standard bed, long bed, the names are nominal

No bed is exactly the length on the badge. The number that matters is the inside length at the floor with the tailgate closed, from the makers' own cargo-box specs:

A generation change moves the same badge by an inch or two, so a cover sold for a 6.5 ft bed must still be matched to model years; measuring along the top rail, or with the gate down, adds inches no cover maker counts. Width is steadier: every truck above runs roughly 50 to 51 inches between the wheelhouses, which is why a four-foot sheet of plywood lies flat in almost any modern pickup.

What is a flatbed?

A flatbed is a body, not a vehicle: a flat platform deck with no fixed sides and no roof, usually with rub rails, stake pockets and a bulkhead or headache rack at the front. On a pickup it replaces the factory box, ordered by the chassis cab-to-axle dimension and deck size, aftermarket steel and aluminum decks commonly run about 84 to 97 inches wide and 7 to 12 feet long. Many go on because the bedsides rusted out, which is how a straight take-off box reaches our racks.

What is a flatbed truck?

Any truck wearing that body. At the small end, a one-ton chassis cab with an eight-foot deck, a gooseneck ball in the floor and a headache rack. At the large end, a Class 8 tractor pulling a flatbed trailer 48 or 53 feet long and 102 inches wide, deck around 60 inches off the ground, good for roughly 48, 000 pounds of freight, a ceiling set by the federal 80, 000-pound gross combination limit and axle spacing rules, not by the deck. A rollback car carrier is a tilting version of the same idea.

Service bodies, dump bodies and the rest of the family

Once the box is off, the chassis can wear anything, and each body has a name:

• Service or utility body, lockable compartments down both sides, open cargo floor between them.
• Dump body, a short steel bed on a hoist, with a gate that swings or spreads.
• Chassis cab, often ordered as a box delete, bare frame rails behind the cab, waiting for one of the above.

None interchange with a pickup box, and most do not reuse its bumper or lamps.

Dually fenders, rockers and cab corners: the panels people mis-name

A dually has dual rear wheels, DRW on the build sheet, against SRW for a single rear wheel. Its bed is wider at the back because the fenders bulge over the outer tires: on a current Ford Super Duty, about 96 inches across the body as a DRW against about 80 inches as an SRW, and other brands are close but not identical. An SRW and a DRW bed of the same length and year therefore do not interchange, and dually fenders are separate bolt-on panels sold in steel and fiberglass.

Two more names get swapped constantly. The rocker panel is the strip below the doors between the wheel openings; the cab corner is the lower rear corner of the cab, behind the last door. Both are separate stampings, both rot first on a salted Ohio truck, and neither belongs to the bed. A pickup has no quarter panel either, the outer bedside does that job. Hoods, doors and fenders sit in our used truck body panels and fenders.

Cab configurations, because a bed name alone does not identify a truck

Cab and bed are ordered together, and the three cab lengths carry a different name at every brand:

• Regular cab, one row of seats, two doors; Ford, GM and Ram all use the term.
• Extended cab, a small second row. SuperCab at Ford, Double Cab at GM, Quad Cab at Ram, Access Cab at Toyota, King Cab at Nissan.
• Crew cab, four full doors. SuperCrew on the F-150, Crew Cab at GM and Ram, CrewMax at Toyota; Ram's stretched heavy-duty version is the Mega Cab.

Give the cab as well as the bed when you call: running boards, rockers, carpet and wiring change with it.

Caps, toppers and tonneau covers are not the same thing

A cap (topper, canopy or camper shell) is a rigid roofed structure that clamps to the bed rails and stands at roughly cab height, usually with side windows and a lifting rear glass. A tonneau cover closes the bed at rail level instead: soft roll-up, tri-fold, hard folding, retractable into a canister, or a one-piece hinged lid. A cap buys a dry, lockable, standing-height load space; a tonneau keeps the truck's profile. Both are sold by nominal bed length and model years, so measure the floor first, then match years. We stock used truck caps and bed toppers and a smaller run of tonneau covers and hard bed covers.

What these words mean when you order from our yard

We buy damaged pickups in Toledo and sell what we pull, so this vocabulary arrives attached to a truck. A take-off part is one removed from a vehicle and sold used, exactly as it came off. Of 3, 001 listings, roughly 2, 350 are used and 651 are new aftermarket or OEM stock, and every listing says which: a used bedside is listed as a used bedside, with its flaws, never as new. The deepest shelf for one truck is Silverado 1500 parts by generation.

Shipping is included in the listed price to all 50 states, parts carry a 90-day warranty, returns run 30 days with no restocking fee. Nothing here is a labor quote: we sell parts and fit nothing. A box swap is bolt-on work for any shop, but a bedside, rocker or cab corner is bodywork and paint, and that labor belongs to your body shop. Payment is reply-first, tell us the part, we send an invoice payable by wire, Zelle, Apple Cash, Chime or Cash App; there is no card checkout on this site. Call the yard at (419) 295-3565 with a year, make, model, cab and bed length and we will tell you whether the panel on our rack fits.