Truck drivers and owners, this heated door mirror is exactly what you need for safer driving in all weather conditions! Designed as a direct replacement for Peterbilt trucks made after 2005, it fits models like the 335, 340, 357, 382, 385, 386, 325, 330, and several others (check the full list to make sure yours is included). The heated feature is an absolute game-changer for winter driving - no more scraping ice or dealing with fogged-up mirrors when you're trying to make your deliveries. The LED marker light adds an extra safety element that makes you more visible to other drivers, especially in low-light conditions. The construction is seriously robust - stainless steel arm with a bottom mount bracket and cover in black aluminum that looks professional and durable. I installed this on my Peterbilt 379, and the difference in visibility has been incredible. The DOT approval gives you peace of mind knowing it meets safety standards, and the quality is much better than some aftermarket mirrors I've tried. Installation was straightforward if you're comfortable with basic truck maintenance - just make sure to disconnect the battery before working with electrical components. If you're tired of struggling with poor visibility during bad weather or need to replace a damaged mirror, this heated LED mirror is absolutely worth the investment. It's made my winter driving so much safer and less stressful, and the LED marker light is a nice bonus that adds that extra layer of safety during night hauls. Definitely recommended for any serious trucker!