Freightliner Cascadia 113/125 Rear Fenders

Frequently Asked Questions About Freightliner Cascadia 113/125 Rear Fenders

Will these rear fenders fit my specific Cascadia model year?

These rear fenders are designed to fit Freightliner Cascadia 113 and 125 models from 2008 to 2017. However, there are variations between early production years (2008-2010) and later models (2011-2017) due to mounting bracket changes. Always verify your truck's exact model year and compare mounting hole patterns before ordering. If you're unsure, our customer service team can help confirm compatibility with your OEM number.

What's the difference between fiberglass and poly rear fenders, and which should I choose?

Fiberglass fenders are more rigid and hold paint better, making them ideal for custom paint jobs and show trucks. They're typically 20-30% heavier than poly options. Poly (polyethylene) fenders are more flexible, resist cracking from road debris, and handle extreme temperatures better. They're lighter weight and generally more durable for everyday use, but may require special primers for painting. Choose fiberglass for appearance and paint quality, or poly for durability and weight savings.

Do I need to drill new holes or modify my truck to install these fenders?

Most aftermarket rear fenders use the existing OEM mounting points, so no drilling is typically required. However, some drivers report needing to slightly enlarge existing holes or add reinforcement washers for a secure fit. Installation usually takes 2-3 hours per side with basic hand tools. We recommend test-fitting before final installation and using stainless steel hardware to prevent rust. Some fenders may require trimming for proper tire clearance, especially with oversized tires.

What finish options are available, and can they be painted to match my truck?

Rear fenders typically come in three finishes: primer (ready for paint), gloss black, and raw unpainted. Primer finish is the most popular as it's ready for your body shop to paint-match to your truck. Gloss black provides immediate installation without painting needs. Raw fenders require complete prep work but offer the most flexibility for custom finishes. All materials can be painted, though poly fenders require adhesion promoter for best results.

How do these aftermarket fenders compare to OEM in terms of quality and fit?

Quality aftermarket fenders from reputable manufacturers typically match OEM specifications for fit and mounting points. The main differences are usually in material thickness (aftermarket may be slightly thinner) and finish quality. Many drivers report aftermarket options lasting just as long as OEM when properly installed and maintained. Look for fenders with UV protection and warranty coverage. Price difference can be 40-60% less than OEM, making them an excellent value for most applications.