AEM air intake system # 21-759C fits 2014-15 Lexus IS250 2.5L V6 & 2014-15 Lexus IS350 3.5L V6 models. It replaces restrictive factory components with an application specific air filter heat shield which reuses the factory cold air duct. Part # 21-759C yielded +7 horsepower and +6 lb-ft of torque at the wheels of a 2015 Lexus IS250 automatic 2.5L. More is expected with the 3.5L.
This air intake system uses the engine’s factory emissions control devices including the mass air flow sensor and PCV hose. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions).