HQRP Replacement Air Filter Cartridge used on small engines. It helps eliminate dirt, dust and debris from contaminating the carburetor and engine. This part consists of a pleated paper filter in a plastic housing. Foam Pre-Filter is included. Warning: Clamp is not included! A dirty air filter can cause the engine from operating properly. The air filter should be checked if the engine drops in power. HQRP is a manufacturer of power adapters, chargers, batteries, filters and many other replacement electronic accessories for different household devices. HQRP brand has been invariably offering reliable replacement products of high quality at a reasonable price, excellent service and customer support for over 20 years. All HQRP products meet the standards of safety and sustainability and their.