FENDERS & LINERS

Fenders & Liners For Peterbilt Trucks

Fenders and fender liners protect the cab and chassis from road debris, water intrusion, and tire spray — and they're among the most commonly replaced body components after minor collisions or years of road use. We carry stainless steel, aluminum, and fiberglass fender assemblies for Peterbilt trucks, along with inner fender liners that protect the frame and electrical components from moisture and debris thrown by the steer tires.

Frequently asked questions about fenders & liners

What fender material is best for a Peterbilt — stainless, aluminum, or fiberglass?

Stainless steel fenders are the premium choice for owner-operators who want maximum durability and a polished appearance that holds up to years of road use without rusting. Aluminum fenders offer a good balance of light weight and corrosion resistance at a lower price point. Fiberglass fenders are popular for their low cost and easy repairability, though they're more susceptible to cracking from impacts compared to metal options. Fleet operators often choose aluminum or fiberglass for the lower cost-per-unit economics.

Do I need to replace the fender liner if only the outer fender is damaged?

Not necessarily — assess the liner separately. If the liner is intact and still properly routed to direct water away from electrical components and the frame, it can be reused. However, if the liner is torn, missing sections, or has lost its mounting points, it should be replaced along with the fender. A missing or damaged liner allows tire spray and road debris to saturate the inner cab structure, which accelerates corrosion and can damage wiring harnesses.

Are Peterbilt fenders easy to install without body shop equipment?

Outer fender replacement is a manageable job for a mechanically capable operator or fleet shop — most mount with a standard bolt pattern and require no special tooling. Inner liners are straightforward clip-and-bracket installations. Fenders with integrated brackets for lights or mud flap hangers require a few extra minutes to transfer hardware, but the overall job is well within the capability of a truck shop doing its own body work.

Other parts you might need

Shop doors for Peterbilt trucks