Frequently Asked Questions About Kenworth T660 Sleeper Side Accessories

What years and models are these sleeper side accessories compatible with?

Our Kenworth T660 sleeper side accessories are designed to fit T660 models from 2008 to 2015. These parts are specifically engineered for trucks with the aerodynamic sleeper configuration. Before ordering, verify your truck's VIN and sleeper type, as day cab models require different accessories. Most accessories are compatible with both 72-inch and 86-inch sleeper sizes, but always check the product specifications for your exact configuration.

What materials are used, and how do they hold up against road conditions?

Most of our T660 sleeper side accessories are manufactured from either 304 stainless steel or heavy-duty ABS plastic with UV protection. Stainless steel options provide superior durability and resist rust even in harsh winter conditions with road salt exposure. ABS plastic accessories are lighter weight and more affordable while still offering excellent impact resistance. Both materials are tested to withstand extreme temperatures from -40?F to 140?F and maintain their finish for years of highway use.

Can I install these accessories myself, or do I need professional help?

Many T660 sleeper side accessories can be installed by truck owners with basic mechanical skills. Most extenders and trim pieces use existing mounting points and come with detailed instructions. Installation typically requires common hand tools like socket wrenches, drill bits for pilot holes, and a torque wrench. However, larger panels or accessories requiring electrical connections should be installed by a professional. Installation time ranges from 30 minutes for simple trim pieces to 2-3 hours for complete side fairings.

What finish options are available, and which matches factory appearance best?

We offer three primary finishes: mirror-polished stainless, brushed stainless, and chrome-plated options. For matching factory appearance, brushed stainless typically blends best with standard Kenworth trim. Mirror-polished provides a show-truck quality finish but requires more maintenance. Chrome options offer excellent shine but may show wear faster in harsh conditions. All finishes are available for most accessories, allowing you to maintain consistent appearance across your truck.

Will aftermarket sleeper accessories affect my warranty or aerodynamics?

Properly installed sleeper side accessories that use existing mounting points typically do not void manufacturer warranties. However, modifications requiring drilling or cutting may affect specific warranty coverage - always consult your dealer first. Regarding aerodynamics, our accessories are designed to maintain or improve airflow around the sleeper. Side extenders and fairings can actually reduce drag and improve fuel efficiency by up to 2% when properly installed, according to customer feedback and wind tunnel testing data.