4 Pcs Trailer Air Bag Spring Replaces 9121, W01-358-9121, 905-57-019, 1R13-039

This product includes rolling lobe and reversible sleeve air springs compatible with specific part numbers. It features a 3-year warranty, durable construction, and thick rubber.

• The description claims a 3-year unlimited mileage warranty.
• The description states that studs are made from 4140 grade steel, which is 30% more durable.
• The description claims industry-leading 5.00 mm thick rubber.
• The description advises consulting a dealer for the exact part number before purchasing.