Trailer Fenders for Sale
Shop trailer fenders for utility trailers, cargo trailers, boat trailers, equipment trailers, enclosed trailers, and custom trailer builds. The Trailer Parts Outlet sells durable fenders for single axle and tandem axle trailers, including smooth steel, tread 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, axle setup, shape, and installation type. Choose from rugged steel fenders, and weld-on fender backs built for everyday hauling, road debris protection, and long-term trailer performance.
Shop Trailer Fenders by Axle Type
- Single Axle Trailer Fenders: Commonly used on smaller utility, cargo, and boat trailers to cover one wheel opening. They protect your trailer body from road debris, water spray, and mud. Popular sizes include 9x32 trailer fenders for light and medium-duty trailers.
- Tandem Axle Trailer Fenders: Built for dual-axle setups, equipment trailers, and heavy-duty work trailers. These fenders cover two wheels on each side and are available in common sizes like 9x72 and 10x72.
Selecting Your Trailer Fender Material & Style
Matching the right material and style to your environment is key to a long-lasting trailer:
- Steel Fenders: The most durable option for heavy-duty hauling. Our raw steel fenders are ready for welding but must be painted, powder-coated, or finished to prevent rust.
- Diamond Tread Plate: Features a textured surface that adds traction and rugged aesthetics that is ideal for work trailers where you might step on the fender.
- Smooth Steel: Provides a clean, classic look for utility or enclosed cargo trailers.
- Teardrop Fenders: Feature a built-in center drop between the wheels on tandem setups, offering superior structural strength and protection.
How to Measure for Replacement Trailer Fenders
Before ordering, ensure a perfect fit by measuring your existing setup:
- Width: Measure across the top surface of the fender from the trailer frame to the outer edge.
- Length: Measure from the frontmost bottom edge to the rearmost bottom edge of the fender.
- Height: Measure from the bottom mounting line to the highest peak of the fender.
- Clearance: You need at least 3 inches of clearance between the top of the tire and the underside of the fender when the trailer is fully loaded.
Trailer Fender Backs & Accessories
Fender backs close the gap between the fender and your trailer frame, preventing mud, water, and road debris from spraying onto your cargo. If you are replacing a damaged or rusted fender, check if your backing plate needs replacement as well. Matching your fender size (e.g., 9x32) with a compatible weld-on fender back ensures maximum protection and a clean finish.
Frequently Asked Questions About Trailer Fenders
What size trailer fender do I need?
Trailer fenders are sized by width × length (e.g., 9×32 or 10×72). Measure your existing fender from front to back for length and across the top for width. You need at least 3 inches of clearance between the tire and fender when the trailer is fully loaded. Single axle trailers typically use 32-inch fenders; tandem axle trailers use 72-inch fenders.
What is the difference between single axle and tandem axle trailer fenders?
Single axle trailer fenders cover one wheel per side and are typically 32 inches long—used on light-duty utility, boat, and cargo trailers. Tandem axle fenders cover two wheels per side (typically 72 inches long) for dual-axle equipment trailers, car haulers, and work trailers.
What material is best for trailer fenders?
Steel fenders are the most durable for heavy-duty hauling but need paint or powder coating to prevent rust. Aluminum is lightweight and corrosion-resistant—ideal for boat trailers. Plastic is affordable and rust-proof but less impact-resistant than metal.
What is a teardrop trailer fender?
A teardrop fender has a curved, teardrop-shaped profile that wraps closely around the tire. It provides excellent debris coverage and a professional appearance, commonly used on tandem axle equipment trailers, car haulers, and enclosed trailers.
Do I need a fender back for my trailer?
A fender back closes the gap between the fender and the trailer frame, protecting against water, mud, and rocks. Recommended for utility, cargo, and work trailers where the fender underside is exposed. They also give a cleaner finished look.
Are trailer fenders bolt-on or weld-on?
Both styles exist. Bolt-on fenders use pre-drilled holes for easy installation and removal. Weld-on fenders attach permanently to the frame for a stronger mount. Choose based on your frame design and maintenance needs.
