Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 6-637 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 6-637 It is listed as Rocker Arm Engine Poppet Valve. component manufactured by Hans Jensen Lubricators A S, specifically under CAGE Code R1427. It is also accompanied by the NSN 2815222691831 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 2815 Diesel Engines and Components.