Peterbilt 386 Cab & Related

Frequently Asked Questions About Peterbilt 386 Cab & Related

What years and models are compatible with Peterbilt 386 cab parts and accessories?

Peterbilt 386 cab parts are specifically designed for model years 2006-2015. While many exterior accessories like visors, mirrors, and grab handles are direct bolt-on replacements for all 386 models within this range, always verify your specific VIN and build date. Some mid-year production changes occurred in 2010 and 2013 that may affect fitment of certain interior components. Day cab and sleeper configurations may also require different part numbers for items like fairings and cab extenders.

Are aftermarket cab parts made from the same materials as OEM, and how do they hold up?

Quality aftermarket cab parts typically use either ABS plastic, fiberglass, or stainless steel construction. OEM-replacement grade parts match factory specifications for material thickness and UV resistance. Stainless steel options for items like door handles, mirror brackets, and grab handles offer superior corrosion resistance compared to chrome-plated steel OEM parts. For exterior panels and fairings, look for parts with gel-coat finishes or those pre-primed for painting to ensure longevity. Most reputable aftermarket manufacturers offer 1-3 year warranties on their cab components.

What tools and experience level are needed to install cab accessories myself?

Most bolt-on cab accessories require basic hand tools including socket sets (typically 10mm-19mm), Phillips and flathead screwdrivers, and trim removal tools. Door panels, mirrors, and grab handles can usually be installed in 30-60 minutes with moderate mechanical ability. Larger items like cab fairings or roof caps may require two people and 2-4 hours. Electrical accessories like marker lights or heated mirrors need basic wiring knowledge and a test light or multimeter. Professional installation is recommended for air-ride seats, complete door assemblies, or any modifications requiring drilling or cutting.

What finish options are available for exterior cab accessories, and which holds up best?

Common finishes include chrome, polished stainless steel, powder coat, and paintable primer. Polished stainless steel offers the best long-term durability without maintenance, though it costs more initially. Chrome-plated parts look great but require regular polishing and may pit or peel after 2-3 years in harsh conditions. Powder-coated items in black or color-matched finishes resist chips and fading better than paint. For plastic components, UV-resistant black or paintable white gelcoat options are available. Consider your climate and maintenance schedule when choosing finishes.

Do I need to worry about DOT compliance when adding or modifying cab components?

Yes, certain cab modifications must meet DOT standards. All lighting must be DOT/SAE approved with proper markings. Mirrors must maintain the required field of view (approximately 200 feet behind the vehicle). Window tint must not exceed state limits for commercial vehicles. Mud flaps, if replaced, must extend to within 8 inches of the ground when loaded. Fender modifications cannot reduce tire coverage below DOT minimums. Always verify that replacement parts carry appropriate certifications, especially for safety-critical items like mirrors, lights, and structural components.