Frequently Asked Questions About Kenworth T300-T450 Door & Cab Side Accessories

Will these door and cab accessories fit my specific Kenworth T300-T450 model year?

Most of our door and cab accessories are designed to fit Kenworth T300, T330, T370, T400, and T450 models from 1997 to current production years. However, there were minor design changes in 2008 and 2013 that may affect fitment of certain items like door panels and window regulators. We recommend checking the specific product description or contacting our support team with your VIN to ensure proper fitment for your exact model year.

What's the difference between OEM and aftermarket door handles, and which should I choose?

OEM door handles are manufactured to exact factory specifications using the same materials as your original equipment, typically featuring zinc die-cast construction with chrome or painted finishes. Aftermarket options often use similar materials but may have slight variations in weight or finish quality. OEM handles generally last 10-15 years with proper maintenance, while quality aftermarket handles typically last 7-10 years. The price difference can be 40-60%, making aftermarket a good choice for older trucks or fleet vehicles.

Can I install door seals and weatherstripping myself, or do I need professional help?

Door seal replacement is a moderate DIY project that takes 2-3 hours per door. You'll need basic tools including a heat gun or hair dryer, adhesive cleaner, weatherstrip adhesive, and trim removal tools. The most challenging part is removing old adhesive completely and ensuring proper alignment to prevent wind noise. Common mistakes include stretching the seal during installation or not allowing adequate cure time (24 hours) before closing doors. Professional installation typically costs $150-300 per door but guarantees proper fitment.

What causes my Kenworth T300-T450 door to sag, and which parts do I need to fix it?

Door sagging is typically caused by worn door hinges, damaged hinge pins and bushings, or a bent door check strap. Signs include difficulty closing, gaps at the top of the door, or the door dropping when opened. For most repairs, you'll need new hinge pins and bushings (upper and lower), and possibly a complete hinge assembly if wear is severe. Door check straps should be replaced if bent or showing excessive play. This repair requires door realignment, making professional installation recommended unless you have experience with heavy truck doors.

Are chrome and stainless steel cab accessories worth the extra cost over painted options?

Chrome and stainless steel accessories typically cost 30-50% more than painted alternatives but offer superior corrosion resistance and longevity. Stainless steel mirrors, grab handles, and trim pieces can last the lifetime of your truck with minimal maintenance, while painted versions may need replacement every 5-7 years in harsh conditions. Chrome requires regular polishing to maintain appearance but provides excellent protection when properly maintained. For trucks operating in salt-belt states or coastal areas, the extra investment in corrosion-resistant materials typically pays off within 3-5 years.