Kenworth W900A Exhaust Kits

Frequently Asked Questions About Kenworth W900A Exhaust Kits

Will an exhaust kit for the Kenworth W900A fit my truck without modification?

Exhaust kits are designed to match the W900A's frame and cab configuration, but fitment can vary depending on your truck's model year, engine, and any prior modifications to the exhaust system. Always check the listed specifications, including pipe diameter, mounting bracket style, and overall length, against your truck's current setup before ordering. If you're unsure, our team can help confirm compatibility based on your VIN or existing exhaust components.

What materials are these exhaust kits made from, and how do they hold up over time?

Most exhaust kits are constructed from stainless steel or aluminized steel, chosen for their resistance to heat, road debris, and corrosion. Stainless steel components typically offer better long-term resistance to rust and discoloration, especially in regions with harsh weather or road salt exposure, while aluminized steel provides a cost-effective option with solid heat resistance. Finish options like polished or brushed stainless can affect both appearance and how the kit weathers over time.

Do these exhaust kits meet DOT and EPA requirements?

Exhaust kits themselves are generally not subject to separate DOT or EPA certification, since emissions compliance is tied to the engine and emissions control system rather than the exhaust piping and stacks. However, altering exhaust routing or components could affect emissions system performance or noise levels, so it's worth checking local and state regulations, particularly around exhaust noise ordinances, before installation.

Can I install an exhaust kit myself, or should I have a professional do it?

Many exhaust kits are designed for straightforward bolt-on installation using existing mounting points, making them manageable for someone comfortable with basic tools and a lift or jack stands. That said, working with exhaust components involves handling heavy pipe sections and ensuring proper seals at each joint to prevent leaks, so if you're not experienced with exhaust work, having a professional install the kit can help avoid fitment issues or leaks down the road.

What's the difference between a straight stack and a curved stack exhaust kit?

Straight stacks run vertically with minimal bends, offering a classic look and generally less airflow restriction, while curved stacks angle outward or backward, which some drivers prefer for aesthetics or to direct exhaust away from the cab. The choice mostly comes down to personal preference and how the stack integrates with your truck's existing exhaust routing, though curved stacks may require slightly different mounting hardware.