The Hendrickson INTFRM.2583 (also listed as INTFRM2583) is a genuine Hendrickson suspension air spring kit, cataloged under the AAT 14RH ST WO designation. This part falls within Hendrickson’s suspension spring and related components line, sold individually as a single unit. The long-form description references a standard weight packaging configuration (STDWG N PK), indicating this kit ships in its standard factory packaging. Pro Gear and Transmission carries this as a genuine Hendrickson part. Call us to confirm the correct fit for your suspension application before ordering.FeaturesGenuine Hendrickson suspension air spring kitPart number INTFRM.2583 or INTFRM2583AAT 14RH ST WO designationStandard weight factory packaging (STDWG N PK)Sold as a single unit (each)Call Pro Gear and Transmission to confirm proper application fit