Screwing in the power of our performance Cadillac STS spark plugs doesn't wreck your mid-size luxury sedan's engine, or void your engine's warranty. You'll experience a smoother-running engine and better acceleration once one of the STS performance spark plug sets are sitting in your executive car's engine.
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Crank your combustion up to 11 and experience immediate gains in power, fuel economy and motor longevity with Pyrotek E3 Spark Plugs. Featuring their unique DiamondFire technology, E3 plugs burn sooner and stronger for intense results. Custom gapped. 5-year warranty.
For a high-tech tune-up and rubber-burning performance, make the switch to Pulstar Spark Plugs. Armed with an integrated capacitor, they store and compress electricity before unleashing it in a spectacular spark for 5,000,000 watts of peak power. Limited Lifetime Warranty.
Gain an owner's perspective of the qualities of these plugs by looking at STS spark plug reviews found below. The punch that you feel after putting in these powerhouse Cadillac STS racing spark plugs is as if you just purchased a brand new executive car that's just raring to go.