DURABILITY: MVPTruckParts Air Spring Bags are engineered with high-grade rubber, at a thickness of 4.5 - 5.00 mm, and a part number permanently etched for ease of identification, ensuring a product that surpasses OEM standards for maximum durability and robust performance.PREMIUM BUILD: The air spring bags incorporate studs crafted from 4140-grade steel that are 25% stronger, providing the Hendrickson AAT 23K models with a suspension system that's not only robust but also reliable over time.DIRECT FIT REPLACEMENT: These air spring bags are meticulously designed for a precise OEM replacement, fitting an extensive range of parts including Hendrickson S-20900, S-21800, Firestone, Goodyear, and Triangle models, making them a perfect match for Intraax & Van Traax systems.EASY INSTALLATION: With advanced composite pistons, our air spring bags are built to withstand the toughest leak tests, ensuring consistent integrity and performance upon installation, thus simplifying the installation process.WARRANTY AND FITMENT ASSURANCE: Backed by an industry-leading 3-year unlimited mile warranty, MVPTruckParts demonstrates a strong commitment to quality. We provide customers with the confidence to verify fitment, ensuring the air spring bags align with the part numbers and specifications, supported by comprehensive diagrams.Enhance Your Hendrickson AAT 23K Models with MVPTruckParts Air Spring BagsUpgrade your Hendrickson AAT 23K Models' suspension with MVPTruckParts Air Spring Bags, crafted to exceed the rigorous demands of Intraax & Van Traax systems. Our air spring bags are the culmination of quality engineering and innovative design, tailored to offer a superior replacement for a range of OEM parts.Exceptional Quality and Durability: Each air spring bag showcases a part number clearly engraved on resilient rubber material, 4.5 to 5.00 mm in thickness, surpas