Peterbilt 357/378 Bumpers

Frequently Asked Questions About Peterbilt 357/378 Bumpers

Will these bumpers fit my specific year model Peterbilt 357 or 378?

Most aftermarket bumpers for Peterbilt 357/378 trucks are designed to fit models from 1986 through 2007. However, there can be slight variations between early and late production years. The 357 and 378 share the same bumper mounting points and dimensions, making them interchangeable. We recommend checking your OEM or contacting us with your truck's year and any modifications to ensure proper fitment, especially if you have a pre-1990 model or have made frame modifications.

What's the difference between chrome steel and stainless steel bumpers, and which holds up better?

Chrome-plated steel bumpers offer a mirror-like finish at a lower price point but require regular polishing and can rust if the chrome gets chipped or scratched. Stainless steel bumpers (typically 304 grade) cost more initially but resist corrosion better and maintain their appearance with less maintenance. For trucks operating in northern states with road salt exposure, stainless steel provides better long-term value. Chrome works well for show trucks or southern operations where corrosion is less of a concern.

Do I need to drill new holes or make modifications to install these bumpers?

Most quality aftermarket bumpers use the factory mounting holes and brackets, requiring no drilling for basic installation. However, if you're adding accessories like fog lights or changing from a standard to heavy-duty bumper, you may need to drill mounting holes for brackets or accessories. The installation typically takes 2-3 hours with basic hand tools. Some bumpers may require slight adjustments to align with existing light bars or grille guards.

What styles are available, and can I add accessories to these bumpers?

Common styles include standard OEM replacement, Texas square, curved classic, and heavy-duty tow bumpers. Most bumpers come with pre-drilled holes or mounting points for common accessories like fog lights, step plates, and license plate brackets. Bumper thickness typically ranges from 14-gauge to 3/8-inch steel, with heavier options better suited for vocational trucks. Many bumpers also accommodate bolt-on center tow hooks or pintle hitch receivers.

How much weight do these bumpers add, and will they affect my truck's handling?

Standard replacement bumpers typically weigh 45-65 pounds, while heavy-duty models can weigh 85-120 pounds. The weight difference is generally not significant enough to affect handling or require suspension adjustments. However, if you're upgrading from a plastic or fiberglass bumper to steel, or adding a heavy-duty bumper with integrated tow equipment, you may notice a slight change in front-end weight distribution. This rarely impacts daily driOEMg but can slightly improve stability when plowing or towing.