The item is a military-grade, heavy-duty rear driving axle differential with an integral cooler for HMMWV and heavy-payload military trucks, NSN 2520-01-574-4828 / PN 12529095, restricted to Dana Corporation (CAGE 63ZH0). Estimated quantities range from 27 minimum to 675 maximum under a 5-year long-term contract. The Government does not have data rights to the technical data package or specifications. This market research request is not a request for proposals; response is voluntary and the Government assumes no financial responsibility for response costs. Interested contractors must qualify through the Source Approval Program at their own expense.