Shop trailer fenders for utility trailers, cargo trailers, boat trailers, equipment trailers, enclosed trailers, and custom trailer builds. The Trailer Parts Outlet carries durable fenders for single axle and tandem axle trailers, including smooth steel, tread plate, diamond plate, teardrop, rolled, and fender back options.
Whether you are replacing a damaged fender, finishing a new trailer build, or upgrading to a stronger style, this collection helps you compare trailer fenders by size, material, axle setup, shape, and installation type. Choose from rugged steel fenders, lightweight aluminum options, plastic trailer fenders, and weld-on fender backs built for everyday hauling, road debris protection, and long-term trailer performance.
Shop Trailer Fenders by Axle Type
For smaller utility, cargo, and boat trailers, single axle trailer fenders are commonly used to cover one wheel opening and protect the trailer body from rocks, water spray, mud, and road debris. Popular single axle sizes include 9x32 trailer fenders and other compact fender styles for light-duty and medium-duty trailers.
For larger work trailers, equipment trailers, and dual axle setups, tandem axle trailer fenders provide coverage across two wheels on the same side of the trailer. Tandem fenders are available in common sizes such as 9x72, 10x72, and other heavy-duty styles designed for stronger coverage and a finished trailer appearance.
Steel, Aluminum, Plastic, Smooth, and Diamond Plate Trailer Fenders
Choosing the right trailer fender material depends on how the trailer is used. Steel trailer fenders are a strong choice for utility trailers, equipment trailers, and heavy-duty hauling. Raw steel fenders should be painted, powder coated, or otherwise finished to help protect against rust and corrosion.
Aluminum trailer fenders are lightweight and naturally corrosion-resistant, making them a strong option for trailers exposed to moisture or road spray. Plastic trailer fenders are affordable, lightweight, and easy to install for many light-duty trailer applications. Diamond plate and tread plate fenders add traction, durability, and a rugged look, while smooth rolled fenders provide a clean, classic finish.
How to Measure for Replacement Trailer Fenders
Before ordering replacement trailer fenders, measure the length, width, and height of your existing fender. Trailer fenders are commonly listed in length x width format, so a 9x32 fender is approximately 9 inches wide and 32 inches long. You should also confirm tire size, axle type, mounting style, and available clearance before choosing a replacement.
For the best fit, measure from the front edge to the back edge of the fender, across the top width, and from the mounting surface to the highest point of the fender. If your trailer uses fender backs, weld-on brackets, or a custom frame setup, confirm those parts before checkout so your new fenders install correctly.
Trailer Fender Backs and Replacement Parts
Fender backs help close off the inside of the fender and provide extra protection from water, mud, rocks, and tire spray. They are commonly used on utility trailers, cargo trailers, boat trailers, and work trailers where the fender needs additional coverage or a cleaner finished look.
If you are replacing a fender and the backing plate is damaged, rusted, or missing, choose a compatible fender back based on your fender size and axle setup. Matching the fender and fender back helps improve protection and gives the trailer a stronger, more complete installation.
Choosing the Right Trailer Fender
The right trailer fender should match your tire size, axle setup, trailer use, and preferred material. A light-duty utility trailer may only need a single axle smooth steel fender, while a tandem equipment trailer may need a heavier tread plate or teardrop fender. Boat trailers and trailers exposed to moisture may benefit from corrosion-resistant material or a protective coating.
Browse our full selection of trailer fenders to compare sizes, styles, and materials. If you are not sure which fender fits your trailer, check your current fender measurements or contact The Trailer Parts Outlet team before ordering.
