International ProStar Fender Extensions

Frequently Asked Questions About International ProStar Fender Extensions

What are fender extensions and what do they do on an International ProStar?

Fender extensions are add-on panels that attach to the outer edge of the fender to provide additional coverage over the tires. They help block road spray, mud, and debris from being thrown outward toward the cab, other vehicles, and the sides of the trailer, especially in wet or dirty driving conditions.

Will these fender extensions fit my specific International ProStar model year?

Fender extensions are typically designed to match the factory fender shape and mounting points for the ProStar, but fitment can vary depending on whether your truck has the original factory fenders or aftermarket replacements, and on the model year of your ProStar. Always check the listed fitment details on the product page and compare your existing fender profile before purchasing to confirm a proper match.

What materials are these fender extensions made from, and how durable are they?

Fender extensions are commonly available in materials such as ABS plastic, fiberglass, or poly composite blends. Each material offers a different balance of flexibility, impact resistance, and long-term durability against road debris, temperature changes, and UV exposure. Poly and composite options generally hold up well to minor flexing and impacts, while fiberglass can offer a stiffer, more finished appearance but may be more prone to cracking under heavy impact.

Can I install fender extensions myself, or do I need a professional?

Many fender extensions are designed for straightforward bolt-on or clamp-on installation using existing fender mounting holes or included hardware, making them a manageable DIY project for someone comfortable with basic hand tools. That said, proper alignment is important to avoid rubbing against tires or affecting airflow, so if you are unsure about fitment or drilling additional holes, having a shop install them can help ensure a clean, secure result.

Do fender extensions come pre-finished, or will I need to paint them?

This depends on the specific product. Some fender extensions are sold in a raw or primer-ready finish that allows you to paint them to match your truck, while others may be offered in a finished black or textured surface. Check the product description and images closely to confirm the finish before ordering, especially if color matching to your ProStar is a priority.