International Mud Flaps

Frequently Asked Questions About International Mud Flaps

What size mud flaps do I need for my International truck model?

International trucks typically require 24" x 30" mud flaps for semi-tractors and 24" x 36" for straight trucks, but size can vary by model year and configuration. For ProStar, LoneStar, and LT models (2008-present), standard 24" x 30" flaps work best. Older 9000 series and PayStar models may need custom measurements. Always measure from the bottom of your fender to the ground when loaded to ensure proper coverage and DOT compliance.

Will these mud flaps fit my specific International truck year and model?

Most universal mud flaps fit International trucks from 1990 to current models, including ProStar, LoneStar, LT Series, RH Series, HX Series, and older 9000i/9900i models. The key compatibility factor is the mounting bracket style rather than the truck model. International trucks use standard mounting points that accept both OEM-style and universal brackets. Check if your truck has single or dual rear wheels, as this affects bracket spacing.

How difficult is the installation, and what tools do I need?

Installation typically takes 30-45 minutes per set with basic hand tools. You'll need a drill with metal bits (typically 3/8" or 1/2"), wrenches or socket set, and the included mounting hardware. Most International trucks have pre-existing mounting holes, but some models may require drilling 2-4 new holes. The biggest challenge is usually accessing tight spaces behind the wheels - having the truck on level ground with wheels turned can help with clearance.

What's the difference between rubber and poly mud flaps for International trucks?

Rubber mud flaps are heavier (8-12 lbs), more flexible in extreme cold, and typically last 2-3 years in heavy use. They're ideal for construction and off-road applications. Poly mud flaps are lighter (4-6 lbs), more resistant to chemicals and road salt, and maintain their shape better over time, lasting 3-5 years. For International long-haul trucks, poly is often preferred for weight savings and longevity. Both meet DOT requirements when properly sized.

Do these mud flaps come with anti-sail brackets, and are they necessary?

Most mud flap sets include standard mounting brackets, but anti-sail brackets are typically sold separately for $15-30 per set. They're highly recommended for International highway trucks traveling over 55 mph regularly, as they prevent the flaps from folding under at high speeds. This is especially important for lightweight poly flaps. Anti-sail brackets also reduce wear on the flap edges and improve spray control in wet conditions.