The 10 Best Truck Undercoatings

A high-performance selection with excellent adhesion properties, Dynatron 544 Dyna-Pro (appx. $119) can be applied via a brush or a spray gun. It leaves behind a flexible black layer that resists chipping, and if you're pressed for time, you'll appreciate that it dries quickly.

Thanks to its clean, lanolin-based formula, Fluid Film Prevention (about $45) will appeal to eco-friendly consumers who prefer to avoid products that use ozone-depleting chemicals. It contains an anti-freezing agent, so you can expect superior performance in extremely cold climates.

CRC Brakleen (about $49) uses a low-VOC spray to safeguard everything from undercarriages and wheel wells to firewalls from moisture, salt, and road debris. It is sold as a single or in a 5-pack, so if you're on the fence, you can try one out before committing to more.

If your main concerns are sealing and preventing rust, then you'll appreciate that POR-15 45404 (about $42) can be applied directly to metal that's already corroded, which means you won't have to spend hours removing flaky buildup with a wire brush and elbow grease beforehand.

Thanks to its potent, asphalt-based solution, 3M 03584 Professional (appx. $54) is especially well suited to protect heavy machinery and large vehicles from damage. Once cured, the resultant rubberized coating will help insulate the cabin from engine and road noise, too.

Wurth High-Build Underseal (around $20) goes on thick and spreads evenly, so the application process isn't too arduous. It's ideal for instances where heavy or coarse texture patterns are desired, and is great for touching up areas where a factory undercoat may have rubbed away.

Rusfre Automotive Black (appx. $20) contains reinforced, bound fibers that help it bond to both painted and bare surfaces without peeling, in addition to special rust inhibitors to keep corrosion at bay. For the best results, use a spray gun to apply it at room temperature or higher.

The affordably-priced Evercoat 1348 Premium (about $12) leaves a lightly textured layer that can be painted over in as little as 2 hours without bleeding through, so it's great for restoration projects. It's perfect for rocker and lower body panels, as well as splash pans and trunks.

Coming from a renowned brand that's been in the business for nearly a century, oil-based Rust-Oleum Mist (appx. $7) is dry to the touch after an hour, producing a flat black finish when all is said and done. Plus, it only needs about a minute to set before you add your second coat.

Not only does Chemical Guys Bare Bones (about $35) shield your vehicle's underside from contaminants, but it also goes one step further and restores its original shine, too. And thanks to its advanced UV solar protection, you won't have to worry about damage from the Sun, either.