1987 GMC V2500 6.2L V8. 1987 GMC V2500 5.7L V8. 1987 GMC V2500 4.8L 6 Cyl. Notes: Fuel Tank Lock Ring -- with O-Ring. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.