International 9900/i/ix Air Springs & Level Valves

Frequently Asked Questions About International 9900/i/ix Air Springs & Level Valves

What do air springs and level valves actually do on my International 9900/i/ix?

Air springs (air bags) support the weight of the cab or chassis and absorb road vibration, providing a smoother ride and reducing stress on the frame and suspension components. The level valve works alongside the air springs to automatically adjust air pressure as load and ride height change, keeping the cab or suspension riding at the correct height. Together these components help maintain consistent ride quality and handling.

How do I know if my air spring or level valve is failing?

Common signs include a cab or suspension that sits lower on one side, a rough or bouncy ride, visible cracks or bulges in the air spring rubber, audible air leaks near the spring or valve, or the cab not returning to normal ride height after hitting a bump. If you notice any of these symptoms, it is a good idea to inspect the air spring and level valve before they fail completely.

Will these air springs and level valves fit my specific 9900/i/ix model and year?

Fitment can vary by model year, cab configuration, and whether the part is for the cab suspension or chassis suspension. Always check the listed part number and compatible year range on each product page, and compare it against the part number currently on your truck or your service manual before ordering. If you are unsure, our team can help confirm fitment.

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

Many experienced owner-operators and mechanics replace air springs and level valves themselves, since the job typically involves releasing air pressure, unbolting the old component, and installing the new one in its place. However, working with air suspension systems does involve pressurized air and precise mounting, so if you are not comfortable with that, having a qualified diesel truck shop handle the install is a safer option.

Should I replace the level valve at the same time as the air springs?

It is not always required, but if your level valve is original equipment and has significant mileage on it, replacing it at the same time as the air springs can help ensure consistent ride height and reduce the chance of a repeat repair down the road. If your level valve is functioning properly and shows no signs of wear or leaks, it can typically be left in place.