Parts Geek - For 1977-1978 GMC P15 Radiator Cap API 52573RZ 4.8L 6 Cyl. 1977 GMC P15 4.8L 6 Cyl. 1978 GMC P15 4.8L 6 Cyl. Notes: Radiator Cap -- Safety Lever; 16 lb. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
