Frequently Asked Questions About Kenworth T700 Air Springs & Level Valves

Will these air springs fit my specific year model Kenworth T700?

Most air springs and level valves for the Kenworth T700 are compatible with model years 2011-2019. However, there can be variations based on your truck's suspension configuration (Airglide 100, 200, or 400 series). Always check your existing part numbers or contact our support team with your VIN to ensure proper fitment. Early 2011 models may have different mounting brackets than 2012 and newer trucks.

How difficult is it to replace air springs on a T700, and what tools do I need?

Replacing air springs typically takes 2-3 hours per axle for someone with basic mechanical skills. You'll need standard hand tools, jack stands rated for commercial trucks, and ideally an air impact wrench. The most challenging part is safely supporting the truck while removing the old springs. Many customers recommend having a helper, as the springs can be awkward to maneuver into position. Always disconnect the air lines and depressurize the system before starting.

What's the difference between OEM and aftermarket air springs for the T700?

OEM air springs typically use reinforced rubber with multiple ply construction and can last 300,000-500,000 miles under normal conditions. Quality aftermarket options from brands like Firestone and ContiTech offer similar durability at 20-30% less cost. The main differences are usually in the warranty period (OEM often provides 2-3 years vs 1-2 years aftermarket) and minor design variations in the mounting plates. Both types maintain the same ride height and load capacity specifications.

How do I know if my level valve needs replacement along with the air springs?

Common signs of a failing level valve include uneven ride height side-to-side, truck leaning after parking, slow height adjustment when loaded, or constant air loss from the suspension system. If your air springs failed due to over-extension or repeated bottoming out, there's a good chance the level valve isn't maintaining proper ride height. We recommend replacing level valves every 200,000-250,000 miles as preventive maintenance when doing air springs.

Can I upgrade to heavy-duty air springs if I frequently haul maximum loads?

Yes, several manufacturers offer heavy-duty air spring options for the T700 that provide 10-15% more load capacity and improved durability. These typically feature thicker rubber compounds and additional steel reinforcement in the bead plates. Popular upgrades include the Firestone W01-358-9780 for drive axles and ContiTech 64229 for steer axles. Keep in mind that upgrading springs alone won't increase your truck's legal weight rating, but they will provide better longevity under heavy use.