When you want the most horsepower out of you mid-size crossover SUV, try our GMC Terrain spark plugs and be pleasantly surprised. The Terrain performance spark plug sets use capacitors fitted right in the plugs to harness 1,000,000 watts of engine energy. Most aftermarket plugs only hand you 50 watts.
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GMC Terrain racing spark plugs allow your SUV to burn fuel more efficiently, so you reduce CO2 emissions coming from your tailpipe. Also, these plugs are safe for your rig and don't void factory warranties. One place to go for information is Terrain spark plug reviews at the bottom of our spark plug pages.