Door Mirror & Hood Mirror. Front Grille & Bumper. Exhaust Pipes & Tips. Front Sump Oil Pan for Detroit Diesel Series 60 Western Star 4900SA 23522282. For Detroit Diesel Series 60 Western Star 4900SA Freightliner Argosy. OEM Number: 23521170, 23522282 Color: Gray, Anti-rust Painted Gasket Included: Yes. 1x Engine Oil Pan; -1x Rubber Gasket. Lower 48 states with physical address. An 5% additional charge will be apply on American Express users. OR, you may choose to have a replacement. Business Hour: 8:30am – 5:00pm Monday through Friday.