Frequently Asked Questions About Kenworth W990 Air Tanks, Wraps & Mounting

Will these air tanks and mounting brackets fit my specific year model W990?

Our air tanks and mounting hardware are designed to fit all Kenworth W990 models from 2018 to present. The W990 maintains consistent frame rail dimensions and air system configurations across these model years. However, if your truck has aftermarket modifications to the frame or suspension, we recommend measuring your available mounting space before ordering. Contact our technical support team with your VIN if you need verification for your specific truck.

What's the difference between aluminum and steel air tanks, and which should I choose?

Aluminum air tanks are approximately 50% lighter than steel equivalents and resist corrosion better, making them ideal for weight-conscious operators and those in salt-heavy regions. Steel tanks cost less upfront and handle impact damage better but require more maintenance to prevent rust. Most W990 owners choose aluminum for the weight savings and longevity, especially when paired with polished tank wraps for that classic chrome look.

Can I install these air tank wraps without removing my existing tanks?

Tank wrap installation typically requires removing the air tanks from the truck for proper fitment and secure mounting. The wraps are designed as clamshell-style covers that fully encompass the tank. While some experienced technicians have installed them with tanks in place, we strongly recommend removal for the best fit and to avoid damaging the wrap or tank. Installation usually takes 2-3 hours per tank for a professional mechanic.

Do the polished stainless steel wraps require special maintenance to keep their shine?

Yes, polished stainless steel wraps need regular care to maintain their mirror finish. Clean them weekly with a quality metal polish and microfiber cloth, especially if you operate in areas with road salt or harsh weather. Avoid using abrasive cleaners or steel wool, which can scratch the surface. Many drivers apply a protective wax coating every month to reduce cleaning frequency and protect against water spots and road grime.

What mounting hardware is included, and will I need any additional parts?

Our air tank mounting kits include heavy-duty steel brackets, grade 8 bolts, lock washers, and rubber isolation mounts to reduce vibration. Most installations can be completed with these components alone. However, if you're upgrading from a different tank size or configuration, you may need additional air line fittings or mounting strap adjustments. We recommend ordering a few extra air line fittings (typically 3/8" or 1/2" NPT) to have on hand during installation.