The Peterbilt 377, 378, 379, 388, and 389 1987 and newer rear air cleaner light bars are made of durable stainless steel. These light bars are designed for models with standard vortex air cleaners and each bar features 8 red LED lights. Measuring 23.25 inches long with a 7.4 inch mount, they are sold in pairs and easily attach to the brackets between the hood and air cleaner on both sides. The light bars come with a wiring harness that includes Packard plugs for easy installation. Suitable for most Peterbilt 1987 and newer makes and models, including the 377, 378, 379, 388, and 389.