International DuraStar Mud Flaps

Frequently Asked Questions About International DuraStar Mud Flaps

Will these mud flaps fit my specific International DuraStar model year?

Most aftermarket mud flaps for International DuraStar trucks are designed to fit model years 2002-2018, covering both the 4200, 4300, and 4400 series. However, fitment can vary based on your truck's specific configuration, including single vs. dual rear wheels and wheelbase length. We recommend checking the product specifications for each mud flap set or contacting our support team with your OEM for exact fitment confirmation.

What's the difference between rubber and poly mud flaps, and which is better for my DuraStar?

Rubber mud flaps offer excellent flexibility and durability in extreme temperatures, making them ideal for harsh winter conditions. They typically last 2-3 years with heavy use. Poly (plastic) mud flaps are more rigid, resist chemical damage better, and can last 3-5 years, but may crack in extreme cold. For DuraStar trucks used in construction or heavy hauling, rubber is often preferred for its impact absorption, while poly works well for highway and regional delivery applications.

Do I need to drill holes to install these mud flaps, or do they use existing mounting points?

Most DuraStar mud flap kits are designed to use existing factory mounting holes and brackets, requiring no drilling. However, some heavy-duty or oversized mud flaps may require additional mounting points. Installation typically takes 30-45 minutes per side with basic hand tools. Anti-sail brackets, which prevent mud flaps from blowing back at highway speeds, usually require 2-4 additional mounting holes per flap.

What size mud flaps do I need for my DuraStar, and are they DOT compliant?

Standard DuraStar mud flaps are typically 24" wide x 30" tall for most applications, though 24" x 36" options are available for lowered suspensions or specific state requirements. All quality mud flaps should meet DOT requirements, which mandate coverage of the full tire width and hanging no more than 6 inches from the ground when loaded. Check your state's specific regulations, as some require reflective tape or anti-spray designs.

How do weighted or anti-sail mud flaps compare to standard ones for the DuraStar?

Weighted mud flaps contain internal steel rods or plates that add 2-5 pounds per flap, keeping them hanging straight even at highway speeds. Anti-sail mud flaps use stiffening ribs or brackets to achieve similar results. For DuraStar trucks frequently traveling at speeds over 55 mph, these options significantly reduce wear and improve appearance. Standard mud flaps work fine for local delivery or job site work where speeds remain lower.