The Peterbilt 375/377 Frame Crossmembers & Covers product lineup features a wide selection of high-quality replacement and upgrade parts for Peterbilt truck models. Key products in this product lineup include stainless steel and fiberglass rear frame covers, walking beams, crossmember gussets, and other essential structural components. These parts not only enhance the appearance of your Peterbilt but also help maintain the integrity and durability of your truck's frame. Whether you're looking to upgrade your Peterbilt's aesthetics or need reliable replacement parts, this product lineup has you covered with options suitable for models like the 377, 378, 388, and 389. With a focus on Peterbilt-specific fitment and quality craftsmanship, these frame crossmembers and covers are a must-have for any Peterbilt enthusiast or fleet owner seeking to keep their trucks in top condition.