Precisely engineered to replace Hendrickson part numbers C-28929, S-28929, and Firestone W01-358-9978 for a perfect fit.
Effectively absorbs road shocks and reduces vibrations for smoother and safer transportation.
Constructed from premium materials to withstand heavy loads, rough terrain, and extreme operating conditions.
Provides consistent suspension support to ensure cargo safety and trailer balance.
Description
Comes 1x AGO-9978 in the box. PREMIUM BUILD : Studs made from 4140 grade steel that are 30% more durable. Advanced composite pistons with an industry-leading leak-proof ratio post leak tests. 3 YEAR GUARANTEE : With the MVPTruckParts difference, we offer the industry's first 3-year unlimited mileage warranty on our rolling lobe and reversible sleeve air springs. DIRECT FIT REPLACEMENT : Replacement for Firestone W01-358-9978 and Hendrickson C-28929, S-28929 DURABILITY: Industry-leading 5.00 mm thick rubber, surpassing standard requirements. Part number permanently engraved on each air spring for easy identification