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.
Have a Question?
Have a Question?Ask a product expert!(800) 874-8888Live Chat
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.