Protect your rig. Customize your look. Get the job done.
When it comes to keeping your semi truck clean, protected, and road-ready, high-quality fenders are a must-have. Whether you're running long hauls or doing local deliveries, your fenders help shield your rigâand nearby driversâfrom road spray, mud, rocks, and debris.
At 4 State Trucks, we carry a wide selection of aftermarket semi truck fenders in every shape and style. From full radius and half fenders to quarter fenders and custom full-wraps, weâve got the setup that matches your truckâs look and your workday demands.
What Do Semi Truck Fenders Do?
Fenders arenât just for looksâtheyâre built for:
- Protecting your cab, trailer, and undercarriage from grime, salt, and road debris.
- Complying with DOT splash guard regulations in many states.
- Extending the life of your frame, fuel tanks, and wheels by deflecting moisture and rocks.
- Keeping other drivers safer by reducing spray in wet conditions.
- Boosting resale value with a cleaner, well-maintained appearance.
Find the Perfect Front Fender Material
We stock semi truck fenders in a variety of materials to fit your budget, your workload, and your rigâs vibe:
- Stainless Steel: High-shine, corrosion-resistant, and perfect for owner-operators chasing that custom chrome look.
- Aluminum: Lightweight and rustproof with a smooth finish that holds up over time.
- Fiberglass: A great balance of durability and affordability, perfect for daily commercial use.
- Polycarbonate / Polyethylene: Impact-resistant and virtually maintenance-free, ideal for fleets or rough road conditions.
Plus, you can choose from a wide variety of finishes, including:
- Mirror-polished stainless steel.
- Matte black or gloss black powder coat.
- Textured diamond plate.
- Carbon fiber-style finish.
- Paint-ready surfaces for custom color matching.
Why Shop for Fenders from 4 State Trucks?
Industry-trusted aftermarket parts.
Durable designs made for
Class 8 commercial trucks.
Options for models like
Peterbilt, Kenworth, Freightliner, International, and more.
Fast shipping and real driver support.
Expert help to match fender styles, materials, and mounting gear.
You can pair your new fenders with additional accessories like
semi truck mud flaps or matching
stainless steel front bumpers and
polished louvered grilles.
Upgrade Your RigâStart with Front Fenders That Work
Whether you're customizing for show or speccing for work, our semi truck fenders give your rig a clean, professional lookâwhile keeping it protected from daily wear. Shop now and find the perfect fit, finish, and function for your truck.
Frequently Asked Questions About Semi-Truck Fenders
What material options are available for semi-truck fenders, and which is most durable?
Semi-truck fenders come in three main materials: fiberglass, aluminum, and stainless steel. Aluminum fenders offer excellent corrosion resistance and moderate weight, making them ideal for most applications. Stainless steel fenders provide the ultimate durability and polish retention but come at a higher price point. For heavy-duty applications or harsh weather conditions, we recommend aluminum or stainless steel for their superior longevity.
How do I ensure the fenders will fit my specific truck make, model, and year?
Proper fitment depends on three key measurements: bracket spacing, fender width, and wheel coverage requirements. Most fenders fit standard bracket spacing of 16, 24, or 26 inches. Check your existing fender brackets or measure center-to-center distance. For model-specific fitment, provide your truck's year, make, and model when ordering. Common applications include Peterbilt 379/389 (typically 24-inch spacing), Kenworth W900 (26-inch spacing), and Freightliner Cascadia (16-inch spacing). When in doubt, contact our support team for exact fitment verification.
What tools and hardware do I need for installation, and how difficult is it?
Installation typically requires basic hand tools: socket set, wrenches, and drill with metal bits if new mounting holes are needed. Most fenders come with mounting brackets, but you may need to purchase bolts separately (usually 3/8-inch or 1/2-inch stainless steel bolts). Installation difficulty varies by truck model but generally takes 1-2 hours per fender. Pre-drilled fenders simplify the process significantly. The main challenges include aligning brackets properly and ensuring adequate tire clearance. Professional installation runs $50-150 per fender if you prefer expert help.
What styles and finishes are available, and how do they affect maintenance?
Fender styles include full-wrap, half-wrap, and quarter fenders, with finishes ranging from polished stainless, brushed aluminum. Polished stainless steel requires regular polishing to maintain shine but resists rust indefinitely. Painted fenders need occasional touch-ups but hide minor scratches well. Chrome-plated fenders provide excellent appearance but may peel if damaged. Textured or ribbed designs hide road grime better than smooth surfaces. Consider your maintenance schedule when choosing: polished finishes need weekly attention for show-quality appearance, while painted or textured finishes can go longer between cleanings.
Will aftermarket fenders affect my truck's weight limits or DOT compliance?
Quality aftermarket fenders are designed to meet or exceed OEM specifications and maintain DOT compliance. All fenders must provide adequate tire coverage as required by DOT regulations - generally extending at least to the centerline of the tire. Ensure any fender modifications don't reduce coverage below legal requirements. LED-compatible fenders with integrated marker lights can actually improve compliance by enhancing visibility. Always verify that fenders don't interfere with mud flap requirements in states with specific regulations.
Semi-Truck Fender Mounting Acc
Semi-Truck Full Fenders
Semi-Truck Full Radius Fenders
Semi-Truck Half Fenders
Semi-Truck Quarter Fenders
