Corvette Spark Plugs, Rapidfire, #5, ACDelco, 1986Late-1991

• Get 2% Better Gas Mileage
• Experience 27% Smoother Idle
• Guaranteed Easier Starting

ACDelco Rapidfire Spark Plugs feature an electrode system that can revolutionize your engine's performance. The splined, multi-point center electrode and extended ground electrode with a tapered center are what produce better combustion, smoother idle and faster starts. Set of eight.