Review on 🔌 ACDelco GM Original Equipment 41-101 Iridium Spark Plug - Reliable Performance and Durability for Your Vehicle by David Baer

Perfect for a '03 Pontiac Grand Am GT V6. The plugs fit snugly in the gap. The price was amazing and the discount; $2.00 each. Change plug wires for full operation. Apply a thin coat of dielectric grease to both ends of the cable jackets. Makes for great customization. Took 45 minutes. Change spark plugs only when the engine is cold. I left mine in our garage overnight. I used a TEKTON 3/8 flex head ratchet, Stanley 3 and 6 extensions, a Craftsman 5/8 spark plug wrench. The 6 inch extension works best for the candles in the back. Professional ignition cable set ACDelco 9726UU. The hardest part was removing the old wire lugs from the old spark plugs. If you have new wires, it doesn't matter if you damage the old wires. Just pull them up and take them out. Change 1 wire at a time when you change the plug. Buy parts here at Revain, it's the best price. I made mine for under $50. The car has more power and gear changes. less (UPDATE) My gas mileage around town has since gone from 14mpg to 16mpg. The engine starts much faster and climbs hills without changing gears. I am happy with the results.