Genuine Toyota Engine Air Filter Genuine Toyota Engine Air Filter Toyota Customs You like to breathe fresh air. So does your Toyota. Genuine Toyota air filters are engineered specifically for your vehicle to help trap airborne contaminants before they reach your engine, preventing premature wear to internal components. Plus, a clean air filter improves engine performance and fuel economy-benefits we can all appreciate. Exclusive Features Triple layer filtering gives Genuine Toyota air filters their superior ability to trap and retain dirt, dust and other airborne contaminants. Polyurethane resin frames ensure a proper fit that will seal out dirt and reduce noise. We recommend replacing your engine air filter every 30,000 miles or 36 months under normal driving conditions. If you frequently drive in a dusty environment, we recommend inspecting the filter every 15,000 miles or 18 months.