ACDelco Professional Spark Plug Wire Sets are engineered with strength enhancing fiberglass and high temperature silicone insulators. These spark plug wires are a premium aftermarket offering that covers over 96% of domestic vehicles on the road today. Parts offered for GM, Chrysler, Ford, Honda, Nissan, and Toyota vehicles. ACDelco Professional Spark Plug Wire Sets are designed to match the fit, form, and function found on new vehicles. Vehicle Fitment - Chevy Blazer 1987-1993 CK Pickup 1987-1993 G-Series 1987-1991 P-Series 1987-1993 Suburban 1987-1993 GMC CK Pickup 1987-1993 G-Series 1987-1991 Jimmy 1987-1991 P-Series 1987-1993 Suburban 1987-1993 Yukon 1992-1993 Hummer H1 1995-1996.