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Have not put the plugs in yet ,but they look good ! Just like the ones you buy at auto parts store , only CHEAPER !!!!!
Verified purchase: Yes | Condition: New
Installed these plugs and amazing how much power the engine regained, its the TOP of the line for GM vehicles. Great price and Great product.
Verified purchase: Yes | Condition: New
after changing my plugs and driving to Toronto, some 600 miles each way, and hauling a 6,300 lb load on a double axle trailer with my Silverado, my gas mileage improved 2 mpg! The original plugs had 133K on them, and I also changed the air cleaner. Truck ran cool and without a stumble
Verified purchase: Yes | Condition: New
I replaced my spark plugs at 150,000 miles in a 2000 Silverado 5.3. The old iridium plugs still looked great but at 150k I was getting concerned. These are excellent plugs and last as long or longer than 100k advertisement.
Verified purchase: Yes | Condition: New
No chance to put them in my Corvette, I do solo racing, time for the plugs, I like to use factory plug. Thank you for all your help with the rebate coupon. Jerry
Verified purchase: Yes | Condition: New
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