Semi-Truck Fenders

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.