A variety of mid-sized and large sedan / sedan/sports car-specific original factory replacement high-flow air intake filter elements (suitable for G-series chassis and models equipped with main engines such as B48/B58/B57), can be directly and seamlessly installed into the original single air intake filter box; with multi-layer viscous cotton fabric media, it achieves a balance between precise filtration and high intake efficiency, supports repeated cleaning and regeneration, does not require modification to improve power response and throttle sensitivity, complies with regulations and does not affect vehicle warranty, and is compatible with the original air intake system.