Volvo VNL Gen II Air Springs & Level Valves

Frequently Asked Questions About Volvo VNL Gen II Air Springs & Level Valves

What do air springs and level valves actually do on my Volvo VNL Gen II?

Air springs (also called air bags) support the cab or suspension and absorb road shock, while the level valve automatically adjusts air pressure in the springs to keep the cab or chassis riding level as load and road conditions change. Together they help maintain a smooth, stable ride and reduce stress on other suspension and cab mounting components.

How do I know if I need an air spring or a level valve replacement?

Common signs include a cab that sags to one side, a rougher than normal ride, visible cracking or bulging on the air spring bellows, audible air leaks near the suspension, or the cab not returning to a level position after hitting a bump. If the cab height seems off but the air springs look fine, the level valve or its linkage is often the culprit rather than the spring itself.

Will these parts fit my specific Volvo VNL Gen II model and year?

Products in this category are listed for Volvo VNL Gen II applications, but exact fitment can still vary by cab configuration, suspension setup, and production year. Always check the part number and application notes on each product page, and compare them to your truck's existing components or VIN-specific documentation before ordering.

Can I install a new air spring or level valve myself, or should I have a shop do it?

Basic replacement of an air spring or level valve is a job many experienced DIY mechanics can handle with common tools, a way to safely support the cab or chassis, and care around the air system. However, because these components affect cab stability and ride height, and because the air system needs to be properly bled and adjusted afterward, drivers who are not comfortable working around pressurized air systems or supporting a raised cab should have the work done by a qualified technician.

What is the difference between OEM and aftermarket air springs and level valves for this application?

OEM parts are built to match Volvo's original specifications exactly, which can offer more predictable fit and performance. Aftermarket options are manufactured to be functionally compatible and are often available at a lower price point. Quality can vary between aftermarket brands, so it is worth checking the materials, warranty coverage, and any fitment notes listed on the product page before choosing between OEM and aftermarket parts.