Engineered to fit a wide array of vehicle models, the 33-2591 high-flow air filter is regarded as an optimal solution for reconciling performance improvement and fuel economy. A composite structure of highly permeable cotton filter media and scientifically formulated straight-through flow channels is adopted as its core design. Exceptional filtration efficiency (≥99.9%) and a 20% reduction in intake resistance are thus ensured, enabling the engine to receive cleaner and more sufficient air, which in turn enhances power output efficiency and optimizes fuel economy.