This is a New Old Stock (NOS) Meritor axle shaft, part number B110-9 (also marked C9597 and 588). It features an 8-hole flange and measures approximately 38 inches in length with a 1.87-inch shaft diameter. This part is commonly used in heavy-duty truck applications such as Freightliner, Volvo, and Kenworth.
New Old Stock (NOS): This shaft has never been installed or used. However, due to long-term warehouse storage without heavy rust inhibitor, it exhibits cosmetic surface rust on the flange face, edges, and shaft body. This is purely cosmetic and does not affect the structural integrity or performance of the part. Please carefully review all photos to verify the condition and ensure this part matches your specific spline count and length requirements before purchasing.