Frequently Asked Questions About International ProStar Elbows, Piping & Comp.

What years and models of International ProStar are these exhaust components compatible with?

Our exhaust elbows and piping are designed to fit International ProStar models from 2008 through 2017. Most components are universal across these model years, but some specific parts may vary based on engine type (ISX, MaxxForce, etc.) and whether your truck has DPF/DEF systems. Always check the product description for specific year ranges, and feel free to contact us with your VIN for exact fitment verification.

Are these exhaust components made from aluminized or stainless steel, and which is better for my application?

We carry both aluminized steel and stainless steel options. Aluminized steel components offer good corrosion resistance at a lower price point and typically last 3-5 years under normal conditions. Stainless steel (usually 409 or 304 grade) provides superior longevity, lasting 7-10+ years, and better resistance to road salt and harsh weather. If you operate in northern climates or coastal areas, stainless steel is worth the extra investment.

Do I need special tools or professional installation for replacing exhaust elbows and pipes?

Basic exhaust component replacement can typically be done with standard hand tools including wrenches, sockets, and possibly a reciprocating saw for removing old parts. However, you'll need proper jack stands or a lift to safely access underneath components. Most installations take 1-3 hours depending on what you're replacing. Band clamps make installation easier than welded connections. Professional installation is recommended if you're uncomfortable working under your truck or if welding is required.

What's the difference between 5-inch and 4-inch diameter exhaust components, and which do I need?

Most International ProStar models use 5-inch diameter exhaust systems from the factory, but some earlier models or specific engine configurations may use 4-inch. The diameter is critical for proper fitment and performance. You can verify your size by measuring the outer diameter of your current exhaust pipe. Using the wrong size will cause fitment issues and could affect engine performance. When in doubt, stick with your OEM size unless you're doing a complete system upgrade.

Will aftermarket exhaust elbows and pipes affect my truck's warranty or emissions compliance?

Replacement exhaust elbows and pipes that maintain the same routing and don't modify or remove emissions equipment (DPF, DOC, SCR) are generally warranty-safe and emissions-compliant. These are considered maintenance items. However, any modifications that bypass or alter emissions systems will void warranties and violate federal regulations. Our direct-fit replacement components are designed to maintain OEM specifications and keep your truck compliant while providing reliable performance.