Engine Air Spring Bag Replacement For Heavy Duty Trucks Keeps Your Ride Smooth And Tough For Hendrickson AAT 23K Intraax And Van Traax Firestone 8709 8751 W01-358-8709 Goodyear 1R-13-159 And Hendrickson S-20900 S-21800 C-21800

Heavy-Duty Truck Air Spring Bag - Single Unit
✔️ Direct-fit air spring bag for Hendrickson S-20900/S-21800; 3-yr warranty

These air spring bags replace worn or damaged suspension components in heavy-duty trucks and are commonly used on Intraax and Van Traax systems. They are designed as direct OEM replacements, ensuring a precise fit across multiple brands and models.

✅ Durable 4.5-5.00 mm rubber thickness for long life
✅ 4140-grade steel studs, 25% stronger for robust support
✅ Direct OEM replacement for Hendrickson S-20900/S-21800 and compatible Firestone/Goodyear/ContiTech models
✅ Advanced composite pistons resist leaks and hold pressure for reliable operation
✅ 3-year unlimited-mile warranty and fitment diagrams for accuracy
✅ Extended height 19.40 in (492.76 mm); compressed height 6.00 in (152.40 mm); top plate width 10.38 in (263.65 mm); piston width 9.15 in (232.41 mm); weight 14.00 lb (6.35 kg)

💡 What is an air spring bag used for in heavy-duty truck suspensions? Air springs help maintain ride height and dampen shocks on rough roads. - handy for ride quality - load stability and reduced chassis bounce - easy OEM replacement for Intraax & Van Traax systems