10 Best Automotive Replacement Exhaust Coatings 2025

If you're looking for the best automotive replacement exhaust coatings, then you're in the right place. We've reviewed and scored many products in the exhaust and emissions category, ranging from a 7.6 score up to an impressive 9.9 score. And the brand that stands out among the rest is none other than Gardner-Gibson. Their top-rated product, the GARDNER-GIBSON 5175-A-34, not only received our highest score but also exceeded our expectations. If you want to keep your vehicle running smoothly and efficiently, then this is the exhaust coating for you. Don't settle for less, upgrade your ride with Gardner-Gibson. Keep reading to learn more about our top 10 picks for exhaust coatings.