The Peterbilt 378, 379, 388, and 379 1987 and newer rear air cleaner light bars are a practical and stylish addition to your truck. Made from stainless steel, these light bars are designed for models with standard air cleaners. Each light bar features 8 red/clear LED lights and is 23.25 inches long with a 7.4-inch mount. They are compatible with both 13-inch and 15-inch cans and fit most Peterbilt 378, 379, 388, and 379 1987 and newer makes and models. Sold in pairs, these light bars come with harnesses and lights included and easily attach to brackets between the cab and the air cleaner on both sides. Please note that they will not fit 2010 and newer 389 and 388 models with 15-inch premium cans.