Freightliner SD 108-122 Air Springs & Level Valves is a comprehensive product lineup that encompasses a wide range of air suspension components essential for maintaining the smooth ride and handling of Freightliner semi-trucks. This product lineup features a variety of high-quality replacement parts, including air bags, leveling valves, air fittings, and mounting hardware specifically designed for Freightliner's SD 108 and 122 models. With a focus on durability and compatibility, these products help ensure your Freightliner's air suspension system continues to perform at its best, enhancing both the comfort and safety of your driving experience. Whether you're in need of a replacement air bag, leveling valve, or other critical air suspension component, this product lineup has you covered with a selection of reliable, OEM-quality parts to keep your Freightliner running at its peak.
Frequently Asked Questions About Freightliner SD 108-122 Air Springs & Level Valves
Will these air springs fit my specific Freightliner SD model year?
These air springs and level valves are designed for Freightliner SD models 108 through 122, typically covering years 2002-2019. However, compatibility can vary based on your truck's specific configuration, including suspension type (Hendrickson, Reyco, or Freightliner Airliner). Always verify your existing part numbers or contact us with your VIN to ensure proper fitment before ordering.
How difficult is it to install air springs and level valves myself?
Installation typically requires 2-4 hours per axle for experienced mechanics. You'll need basic hand tools, jack stands, and ideally an air impact wrench. The most challenging part is often accessing the upper mounting bolts and properly adjusting the level valve linkage. Many customers report success with DIY installation, but proper torque specifications (usually 75-85 ft-lbs for mounting bolts) and ride height adjustment are critical for safety and performance.
What's the difference between OEM and aftermarket air springs for these models?
OEM air springs typically use Continental ContiTech or Firestone rubber compounds with reinforced steel girdle rings, while quality aftermarket options often feature similar materials at 30-40% less cost. The main differences are warranty length (OEM usually 2-3 years vs. aftermarket 1-2 years) and minor variations in crimp ring design. Both perform similarly in real-world applications when properly installed.
How long do these air springs typically last, and what causes premature failure?
Under normal conditions, expect 100,000-150,000 miles from quality air springs. Common failure causes include: road debris damage (especially in winter), over-inflation beyond 100 PSI, contaminated air systems with moisture or oil, and worn shock absorbers causing excessive cycling. Regular visual inspections for cracks or bulges and maintaining proper ride height can significantly extend lifespan.
Do I need to replace both the air spring and level valve together?
Not necessarily, but it's recommended if your level valve is over 5 years old or showing signs of air leakage or sluggish response. A faulty level valve can cause premature air spring failure by maintaining incorrect ride height or cycling too frequently. If replacing just the air spring, always check the level valve's linkage adjustment and test for proper operation at 90-120 PSI system pressure.
