Kenworth W990 Exterior Parts

Frequently Asked Questions About Kenworth W990 Exterior Parts

Will these exterior parts fit my specific year model W990?

Most of our W990 exterior parts are designed to fit 2018 and newer models, as that's when Kenworth introduced the W990. However, fitment can vary between model years due to minor design changes. We recommend checking the specific product description for year compatibility or contacting our team with your OEM number. Parts like bumpers, visors, and fender guards typically fit 2018-2024 models, but accessories like mirror brackets or antenna mounts may have more specific year requirements.

What's the difference between chrome, stainless steel, and aluminum exterior parts?

Chrome-plated steel parts offer the highest mirror shine but require regular polishing to prevent rust and pitting. Stainless steel parts (typically 304 or 316 grade) provide excellent corrosion resistance with less maintenance but cost more upfront. Aluminum parts are lightweight and won't rust, but they're softer and more prone to scratching. For bumpers and heavy-duty components, we typically recommend stainless steel for the best balance of durability and appearance, especially if you operate in areas with road salt.

Do I need special tools or professional installation for bumpers and larger exterior parts?

Installing major components like bumpers typically requires basic hand tools, a floor jack or lift, and ideally a second person to help position heavy parts. Most bumpers bolt directly to existing frame mounting points without drilling. However, you'll need a torque wrench to meet manufacturer specifications (usually 250-300 ft-lbs for bumper bolts). Smaller accessories like bug deflectors or visor lights can usually be installed in 30-60 minutes with common tools. We include detailed instructions with each part, and our tech support team can walk you through any installation questions.

Which exterior accessories actually improve aerodynamics and fuel efficiency?

Bug deflectors and cab-mounted air shields can reduce wind resistance and improve fuel economy by 2-5% when properly installed. Full roof fairings offer the most significant improvement, especially if you pull tall trailers. Side extenders and chassis fairings also help streamline airflow around the truck. However, heavy chrome bumpers and excessive light bars can actually increase drag. If fuel efficiency is your primary concern, we recommend starting with a quality bug deflector and roof fairing before adding decorative accessories.

How do I maintain chrome and polished stainless steel parts in winter conditions?

Winter road treatments are extremely corrosive to exterior metals. For chrome parts, apply a quality chrome polish and sealant before winter, then wash with soap and water weekly to remove salt buildup. Never use abrasive cleaners or steel wool on chrome. For stainless steel, use a dedicated stainless polish and always wipe in the direction of the grain. Consider applying a ceramic coating for extra protection. During winter months, rinse your exterior parts with fresh water after each trip if possible, paying special attention to crevices where salt can accumulate.