Shop Peterbilt 357 & 378 Grilles

Ride in style with a custom chrome or aftermarket grille for your Peterbilt 378 from 4 State Trucks. Shop our selection of custom and aftermarket grilles, replacement bars and more. Find the coolest grille options for your Peterbilt that highlight your style and personality at 4 State Trucks.

Peterbilt 357/378 Grilles

Give your Peterbilt 357 or 378 a custom, show-worthy look with a bold aftermarket grille upgrade. Whether you're going for a clean, classic vibe or a more aggressive, custom style, this product lineup has the grille options to match your truck’s personality. Built tough and designed to impress, our grilles let you put a finishing touch on your rig that stands out from the crowd.

Why Upgrade Your Semi Truck Grille?

Swapping out your factory grille is a fast, effective way to upgrade your rig’s style. Here’s why it matters: - Adds a bold, custom touch to your front-end truck - Pairs perfectly with chrome bumpers, visors, and fenders - Helps your truck stand out at shows or on the highway - Some grille styles help improve airflow to your radiator Plus, with high polish finishes and detailed design work, these grilles bring out the best in your Peterbilt’s iconic styling.

Effortlessly Personalize Your Rig

These aftermarket grilles are more than just decorative—they’re built from premium materials like polished stainless steel, aluminum mesh, and custom-punched or slotted steel panels. They’re designed to hold up to daily driving while delivering serious visual impact. Choose from styles like: - Straight bar grilles for that classic Peterbilt look - Punched or louvered patterns for custom builds - Grille surrounds and trim kits for a fully polished front-end upgrade Whether you drive a Peterbilt 357 or 378, you’ll find grilles that are built to fit and easy to install. Each grille in this collection is designed to match the fitment and dimensions of the Peterbilt 357 or 378. Whether you’re replacing an old grille or building a full custom look, you’ll find: - Direct-fit designs - Easy mounting options - Optional grille trim and accessories Shop Peterbilt 357 & 378 Grilles at 4 State Trucks and turn your front-end into a statement piece. Protect your investment with some heavy-duty Pete 357/378 grille guards or pair your purchase with blind-mount front bumpers, filler panels and bumper trims, or Peterbilt 357/378 bumper flip kits. Peterbilt Durable, stylish, and built for the open road—these grilles bring form and function together in one clean package.

Frequently Asked Questions About Peterbilt 357/378 Grilles

Will these grilles fit my specific year Peterbilt 357 or 378?

Most aftermarket grilles for Peterbilt 357 and 378 models are designed to fit trucks manufactured from 1987 through 2007. However, there are slight variations between early models (1987-1999) and later models (2000-2007) due to mounting bracket changes. Always verify the exact year range listed for each grille, and note that some 378 models with extended hoods may require different grille dimensions. When in doubt, measure your existing grille opening or contact us with your VIN for confirmation.

What's the difference between stainless steel and chrome-plated grilles?

Stainless steel grilles are made from solid 304-grade stainless steel, offering superior corrosion resistance and durability without any coating that can peel or flake. They maintain their appearance with minimal maintenance but cost more upfront. Chrome-plated grilles feature a chrome finish over steel or aluminum, providing a mirror-like shine at a lower price point. However, chrome can eventually pit or peel, especially in harsh weather conditions or areas using road salt. For long-term durability, stainless steel is the better investment.

How difficult is the installation, and what tools do I need?

Installation typically takes 2-4 hours and requires basic hand tools including socket wrenches (usually 13mm and 15mm), screwdrivers, and possibly a drill for certain mounting brackets. Most grilles use the existing mounting points, but some custom styles may require drilling new holes. The biggest challenge is usually accessing the lower mounting bolts and properly aligning the grille while tightening. Having a second person helps significantly. Professional installation runs $150-300 if you prefer not to do it yourself.

What grille styles work best with bug screens and winter fronts?

Horizontal bar and punch-hole pattern grilles typically work best with bug screens as they provide adequate mounting surface area. Vertical bar grilles can be trickier, sometimes requiring custom brackets. For winter front compatibility, look for grilles with mounting studs or brackets specifically designed for winter front attachment. Avoid grilles with extremely wide spacing between bars if you regularly use winter fronts, as they may not provide enough support points.

Why are some grilles priced so differently when they look similar?

Price differences reflect material quality, manufacturing process, and fit precision. Budget grilles often use thinner gauge metal, basic chrome plating, and universal mounting brackets that may require modification. Premium grilles feature heavier gauge stainless steel, precision laser-cut or CNC-machined components, and model-specific mounting hardware for perfect fitment. The warranty also varies significantly - budget options typically offer 90 days to 1 year, while premium grilles often include 3-5 year warranties against defects and corrosion.