ARO 637004-B Service Kit

637004-B is an OEM ARO piston pump repair kit (KIT ASM) from Ingersoll Rand. It is listed within the ARO piston pumps parts kits and accessories lineup as 637004-B, designed to support maintenance and rebuild work on ARO piston pumps by providing a complete assembly-style repair kit that aligns with the original design. As an official ARO product, the kit carries the ARO and Ingersoll Rand branding, signaling compatibility with the brand's piston pump platforms. This kit is intended for professional repair workflows that require OEM replacement parts to restore pump performance and reliability in industrial settings where consistent operation is critical. Within the ARO service kit lineup, 637004-B represents an assembled repair solution for piston pump applications, manufactured to the original specifications.