The Hendrickson S-41013-3 (also listed as S410133) is a Haldex 30 brake chamber for heavy-duty suspension applications. This chamber is sized at the standard Type 30 displacement, a common service size across tandem and single drive axle configurations on commercial trucks and trailers. Sourced directly through Pro Gear and Transmission, this is a genuine Hendrickson part. If you need to verify this chamber fits your specific axle or suspension setup, give us a call before ordering.FeaturesGenuine Hendrickson part number S-41013-3 (also S410133)Haldex 30 brake chamber sizingDesigned for heavy-duty commercial truck and trailer suspension systemsSold by Pro Gear and Transmission