Teardrop Air CleanerOriginal S&S teardrop air cleaner assembly Increase horsepower with no other changes Include an S&S cover, backing plate and high-quality filter element and hardware kit Available for most OEM carburetors and S&S performance intake systems Made in the U.S.A. Installation of an S&S air cleaner my require re-jetting or engine re-tuning. However tuning with the OEM emissions standards is required to maintain E.O. validity.