The Door Arm Rest with Stainless Steel Plates is a luxurious and durable accessory designed specifically for Peterbilt 379 trucks manufactured in 2001 and later. The stainless steel plates add a sleek and stylish touch to the door, while the padded arm rest provides comfort and support for the driver. This high-quality accessory enhances the overall look and feel of the truck, making it a must-have for Peterbilt enthusiasts looking to upgrade their truck's interior.