Add style and integrated marker lighting with the extended cab panel with four M1 Millennium amber LED lights, built to fit select Peterbilt 378, 379, 388, and 389 trucks. This premium kit includes a pair of extended cab panels made from durable 304 stainless steel along with eight M1 Millennium amber LEDs featuring clear lenses and plug-in bullet-style wire harnesses for installation. Designed for Peterbilt 378 (1988-2007), 379 (1987-2007), 388 (2008-2010), 389 (2008-2010), and certain 389 Glider models through 2023, the set provides a coordinated lighting and trim solution for both sides of the cab. The panels are sold as a complete set, made in the USA, and carry a warranty against defects in materials and workmanship from the date of purchase. Intended as a high-quality aftermarket replacement rather than an OEM component, this stainless extended cab panel kit offers a practical way to update exterior cab styling.