Shop Subaru Forester Air Intake System Parts & Subaru Forester Air Intake System. Order Subaru Forester Fuel Supply System Replacement. Maintaining optimal fuel and air intake systems in your Subaru Forester is essential for peak performance and fuel efficiency. Regularly replacing air filters and using top-tier gasoline can prevent debris from damaging engine components and ensure a proper fuel-air mixture. Signs your Forester may need new parts include a decrease in acceleration and a sputtering engine—clear indicators that it's time to browse through our premium selection of OEM-spec filters and fuel system components. Choosing the right parts enhances longevity, with high-quality materials designed for seamless installation, ensuring your Forester runs smoothly for miles to come. Shop with us for reliable upgrades and maintenance essentials, tailored to keep your Subaru in top condition.