From 2017 on, the Raptor's body is aluminum-intensive like the rest of the F-150 line — and aluminum changes how you treat a dent, a scratch, or a corrosion spot. Aluminum doesn't rust the way steel does, but it corrodes badly through galvanic reaction wherever steel hardware touches bare metal. The honest rule: treat any paint breach promptly, never mount steel accessories against bare aluminum, and know that real dent repair on these panels is a body-shop job, not a driveway pull.
The 2017-and-later Raptor shares the F-150's high-strength aluminum-alloy body. That saved weight is part of why the truck moves the way it does, but it has consequences for how you maintain and repair the body. Trail rash, rock chips, and the occasional brush with a desert ironwood are part of owning a Raptor. How you handle them differs from a steel truck.
Aluminum doesn't form the flaking red rust that eats a steel fender. Left alone with an intact oxide layer, it's stable. The problem is galvanic corrosion: when bare aluminum contacts a dissimilar metal — steel bolts, a steel bracket, a stainless accessory — in the presence of moisture and road salt, the aluminum sacrifices itself and corrodes at the contact point. This is the failure mode that bites Raptor owners who bolt steel accessories directly to body panels or who leave a paint chip exposed next to steel hardware.
The defenses are straightforward: keep paint and primer intact so bare aluminum is never exposed, isolate dissimilar metals with nylon washers or anti-galvanic compound, and rinse the underbody after salt or playa exposure. This is the same corrosion discipline worth applying to armor mounting, covered in [Raptor Skid Plates](/db/?v=raptor).
Aluminum work-hardens and doesn't spring back like steel. A paintless dent removal tech can sometimes massage a shallow aluminum dent, but sharp creases and anything that stretched the metal need a shop with aluminum-specific tools and a clean, steel-free work area — cross-contamination from steel dust causes corrosion later. Don't attempt a slide-hammer or stud-welder pull on an aluminum panel with steel-truck technique; you'll make it worse.
Surface scratches and rock chips, though, are a reasonable DIY job — and the more important one, because an untreated chip is where corrosion starts.
For chip and scratch repair: aluminum-safe sandpaper, a self-etching aluminum primer, color-matched Ford touch-up paint, and a steady hand. For preventing galvanic corrosion on accessory mounts: nylon isolating washers, stainless hardware, and an anti-seize or anti-galvanic compound rated for aluminum. For trim removal: plastic trim tools and a heat gun for adhesive-backed pieces.
The classic mistake is treating an aluminum panel like steel — using steel-contaminated tools, steel wool, or a steel wire brush, all of which embed steel particles that corrode the aluminum from within. Use only aluminum-dedicated abrasives. The second mistake is bolting steel accessories or armor brackets directly to bare body aluminum without isolation; that contact point will corrode within a season in a salt climate. The third is leaving rock chips unpainted — on steel you have time, on aluminum a breached coating next to dissimilar metal starts corroding faster than owners expect.
A touch-up kit with primer and color-matched paint runs $40–$70 and handles a season of trail chips. Anti-galvanic isolation hardware is $15–$25. Professional aluminum dent repair starts around $300 and climbs fast for creased or stretched panels — aluminum bodywork carries a labor premium over steel because of the specialized tools and isolated work area required. A full panel replacement is four figures.
| Part | Vendor | Est. price |
|---|---|---|
| Touch-up paint (color-matched, Ford code) | Ford / Automotive Touchup | ~$25 |
| Aluminum-safe primer | SEM / 3M | ~$20 |
| Self-etching aluminum primer | Dupli-Color | ~$15 |
| Nylon/stainless fastener anti-galvanic kit | aftermarket | ~$18 |
Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.