Protect your classic big rig with aftermarket grill guards that offer a lot of style and visual appeal. Our comprehensive lineup of Peterbilt 379 grille guards is built for owner-operators who want more than just looks they want real protection, real functionality, and real durability. Grille guards offer more than a pretty face to your rig! Your bumper handles the lower blows from light debris. A grille guard takes it further'shielding your grille, headlights, radiator, and even the hood from big debris, animal hits, brush, or minor scrapes. Think of it as armor for your truck's face. Whether you hit backroads, job sites, or wildlife-heavy stretches, a good guard can help prevent costly damage and downtime. One cracked radiator or busted headlight and you're out time and money. With a grille guard in place, you're better covered. Built Tough with Premium Materials Choose from strong aluminum or durable stainless steel options. Both offer serious strength and corrosion resistance, especially in rough climates. Some guards even feature powder-coated black finishes for that aggressive look. Looking to match up with your current bumper or create a bold contrast? We carry top brands like Herd grille guard bumpers that range from the classic 4-post Texas and Big Tex designs to the more rugged Defender and Super Road Train models. They add a lot of front-end protection with features like latches, lift assists, and integrated lighting. Improve your Peterbilt's style and functionality with aftermarket grille guards. Get style and functionality in one heavy-duty product. A Peterbilt 379 grille guard doesn t just protect it upgrades your truck's style. It gives your front end that rugged, ready-for-anything look. And when you combine it with an aftermarket bumper? It completes the package. Many guards come with mounting points for extra lights: driving, fog, or work lights, and slam latches for easy access when needed. Every item on this page includes full product information, so you can sort and choose the setup that works best for your hauls. Keep Costs Down in the Long Haul Even a minor front-end impact can lead to expensive repairs. A grille guard can take that hit instead keeping your grille, lights, and radiator intact. That's money saved and less time off the road. Not only that, a lot of insurance companies will give you a discount on your monthly premium if they know you're using a grille guard on your commercial truck. What to Consider - Some designs may add weight to your truck - A few styles may slightly affect airflow (but most are optimized to keep air moving) - Check your area for any local regulations but most guards are fully road legal for semis - You may need a freight quote depending on stock and size Ready to add serious front-end protection and style to your Peterbilt? Scroll through our Peterbilt 379 grille guards, compare features, and find the one that fits your rig and driving needs. When you're ready, just hit "Add to Cart." Your Peterbilt 379 deserves more than basic defense. Give it the guard it needs to stand tall and stay safe.

FAQs - Peterbilt 379 Grille Guards

1. What does a grille guard do? It protects your front end grille, headlights, and radiator from damage caused by road debris, wildlife, or low-speed impacts. 2. Will this fit my Peterbilt 379? Yep most grille guards in this category are designed specifically for the 379. Just double-check the mounting setup and bumper compatibility. 3. Are they hard to install? Not really. Most bolt onto your frame or bumper mounts using included hardware. Basic tools and a helping hand are usually all you need. 4. What materials are they made of? Mostly polished stainless steel or heavy-duty aluminum. Both are corrosion-resistant and built for commercial use. 5. Can I still open the hood with a grille guard installed? If you're using a bumper flip kit, yes. Some guards are tilt-compatible or fold down for hood access. Check the product details before you order. 6. Do they interfere with lights or sensors? Nope. Most are designed with clearance for bumper lights, turn signals, and even fog lights. Some have pre-drilled tabs for mounting extra lights, too. 7. Can I add accessories to my grille guard? Yes many have spots for light bars, fog lights, or even tool holders. Just make sure the guard is rated to hold the extra weight. 8. Are grille guards worth it? Definitely. One minor impact could cost thousands in front-end repairs. Some insurance companies offer a discount for drivers with grille guards. 9. Will it affect airflow to my radiator? Not if it's properly designed. Most guards are open-frame styles that allow plenty of airflow while still offering protection.

Frequently Asked Questions About Peterbilt 379 Grille Guards

What years do these grille guards fit, and will they work with my specific 379 model?

Our Peterbilt 379 grille guards are designed to fit model years 1987-2007. However, compatibility can vary based on your truck's specific configuration. Extended hood models require different mounting brackets than standard hood models. If your truck has aftermarket bumpers or custom modifications, you'll need to verify mounting point measurements. We recommend checking your VIN-specific details or calling our tech support at 1-888-875-7787 with your truck's year and hood type for exact fitment confirmation.

What's the difference between aluminum and stainless steel grille guards, and which should I choose?

Aluminum grille guards typically weigh 40-60% less than stainless steel options, making them ideal if weight is a concern for your application. They resist corrosion well but may show scratches more easily. Stainless steel guards offer superior impact resistance and maintain their polish longer, though they require regular cleaning to prevent water spots and road film buildup. For trucks in harsh winter conditions with heavy salt exposure, stainless steel with a mirror finish provides the best long-term durability. Aluminum works excellently for show trucks or lighter-duty applications where weight savings matter.

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

Installation typically takes 2-4 hours and requires basic mechanical skills. You'll need a socket set (typically 3/4" and 7/8"), drill with metal bits for any custom mounting, and a torque wrench to ensure proper tightening to 80-100 ft-lbs on frame mounts. Most guards use existing frame holes, but some models require drilling 2-4 additional mounting points. The most challenging part is usually aligning the guard while supporting its weight - having a second person helps significantly. Detailed instructions come with each guard, and installation videos are available on our YouTube channel.

Will a grille guard affect my headlight beam pattern or cooling system performance?

Properly designed Peterbilt 379 grille guards maintain adequate airflow to the radiator and won't impact cooling when installed correctly. Our guards feature strategic bar spacing that preserves 85-90% of the original grille opening. Regarding headlights, the horizontal bars are positioned to avoid interference with your beam pattern. However, auxiliary lights mounted on the guard should be aimed properly to prevent glare. Some drivers report a 1-2 MPG decrease in fuel economy at highway speeds due to added wind resistance, particularly with heavier steel models.

What finish options are available, and how do I maintain them?

We offer three primary finishes: mirror-polished stainless, brushed stainless, and polished aluminum. Mirror-polished requires weekly cleaning with stainless polish to maintain its showroom shine. Brushed finishes hide minor scratches better and need less frequent polishing - monthly cleaning with mild soap suffices. Polished aluminum should be treated with aluminum polish every 2-3 weeks to prevent oxidation. For all finishes, avoid harsh chemicals and automated truck washes with recycled water, which can cause pitting. Winter road salt should be rinsed off within 24-48 hours to prevent corrosion around mounting points.