1987 GMC V1500 Engine: 4.3LL V6;. 1987 GMC V1500 Engine: 5.0LL V8;. 1987 GMC V1500 Engine: 5.7LL V8;. Part Type: Engine Water Pump Stud Kit. Manufacturer: Dorman. To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in theCompatibility Table.