Series 50 Oil Pump. Government surplus new old stock. This item is in the category “eBay Motors\Parts & Accessories\Commercial Truck Parts\Engines & Components\Oil Pumps”. The seller is “governmenttransitsurplus” and is located in this country: US. This item can be shipped to United States, Bahamas. Brand: Detroit Diesel Manufacturer Part Number: 23530487 Part Type: Pumps