Kenworth Quarter Fenders

Frequently Asked Questions About Kenworth Quarter Fenders

What are quarter fenders used for on a Kenworth truck?

Quarter fenders are mounted over the rear wheels of the tractor to help block mud, water, road debris, and tire spray from being thrown up onto the truck, trailer, and surrounding vehicles. They also add a finished, custom look to the rear wheel area and help protect the frame rails and other components from road grime and corrosion caused by constant debris exposure.

Will these quarter fenders fit my specific Kenworth model?

Quarter fenders are typically designed for specific Kenworth models, such as the T600, T660, T680, T800, or W900, since frame width, wheelbase, and mounting points vary between models. Before ordering, check the product listing for the exact model and year range it is designed for, and compare mounting hardware and bracket style to what is currently on your truck to confirm proper fit.

What materials are these fenders made from, and which one should I choose?

Kenworth quarter fenders are commonly available in steel, aluminum, and fiberglass. Steel fenders are heavy duty and resist impact well but are more prone to rust if the finish is damaged. Aluminum fenders are lighter and naturally corrosion resistant, making them a popular choice for reducing overall vehicle weight. Fiberglass fenders offer a smooth, custom appearance and are lightweight, but can be more susceptible to cracking under heavy impact. Your choice often comes down to the balance of durability, weight savings, and appearance you want for your truck.

How are quarter fenders mounted, and can I install them myself?

Quarter fenders are usually attached using brackets, straps, or arms that bolt to the frame or existing mounting points near the rear wheels. Many are designed as a direct bolt-on replacement for factory or existing aftermath fenders, so if your truck already has mounting hardware in place, installation can often be done with basic hand tools. If your truck does not have existing brackets, you may need to purchase separate mounting hardware or fender brackets to complete the installation.

What finish options are available, and how do I keep the fenders looking good?

Quarter fenders are commonly available in raw, painted, chrome, or polished finishes depending on the material. Raw steel or aluminum can be painted to match your truck, while polished aluminum and chrome finishes give a brighter, show-truck appearance but require regular cleaning to prevent water spots, oxidation, or road film buildup. Routine washing and occasional polishing, especially after winter driving or exposure to road salt, will help maintain the finish and extend the life of the fenders.