A smooth ride starts with a solid suspension system and that means keeping your air springs and leveling valves in top shape. Our collection of Peterbilt 379 air springs and level valves is designed to help you maintain consistent ride height, reduce wear and tear, and improve comfort behind the wheel. Whether you're running a Flex Air, Air Trac, or Low Air Leaf suspension, we ve got the parts that match your setup and keep your truck running steady and level.

Why Semi Truck Air Springs & Leveling Valves Matter

Air springs (or cab air bags) help absorb road shock, reduce vibration, and protect your frame and drivetrain. A functional commercial truck leveling valve ensures your suspension ride height stays exactly where it should be even when hauling heavy loads or traveling across uneven ground. The peterbilt 379 sleeper leveling valve specifically helps maintain cab balance and sleeping comfort, especially over long hauls. A reliable semi truck leveling valve keeps your rear suspension from sagging and protects tires from premature wear. We carry a complete lineup of components, including: - Direct-fit aftermarket cab leveling valves - Peterbilt level valve rods and hardware kits - Replacement valve kits for air suspension systems - Heavy-duty air springs for both drive and cab suspensions These semi truck parts are built to OEM or better standards, ensuring long-lasting performance and a smooth, balanced ride. Whether you're replacing a worn-out leaf suspension setup or fine-tuning a modern air ride system, we have the parts to help you get it done right. So if you're noticing uneven ride height, rough handling, or cab sway don t wait. Shop for some of our aftermarket Peterbilt 379 air springs and leveling valves now and get your suspension back in top condition.