The Hendrickson Strap, part number 057878-003 (also referenced as 57878-003 or 578783), is a genuine Hendrickson suspension component designed for heavy-duty truck suspension systems. Hendrickson suspension straps are used to secure and locate suspension elements, maintaining proper axle alignment and load transfer under operating conditions. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your specific suspension configuration before ordering.Interchanges:Mack 4000-57878003FeaturesGenuine Hendrickson suspension strapPart number 057878-003, cross-referenced as 57878-003 or 578783Designed for heavy-duty truck suspension systemsSold by Pro Gear and Transmission