Our product line of aftermarket Peterbilt 379 Air Springs & Level Valves are designed to keep your classic Peterbilt model running smoothy and reliably. Choose from key products like replacement airbags for Flex Air, Air Trac, Low Air Leaf, and other Peterbilt suspension systems, including valve kits and hardware to maintain the adequate ride height. Our product line has you covered for all of your Peterbilt 379 air suspension needs