## Air Filter Insert Sponge 139QMB/QMA (GY6 50) 4T - High Quality for Your Scooter This high-quality, original, double-layer air filter insert is the ideal solution for most popular Chinese 4T scooters with 139QMB/QMA (GY6 50) engines. It provides optimal engine protection against contaminants, which translates to longer engine life and trouble-free operation. ### Dimensions and Fit - Length: 280mm - Thickness: 20mm Before purchasing, it is recommended to check the type of air filter cartridge in your vehicle. Manufacturers have changed the filter type from paper to sponge over the years, which do not always fit interchangeably with the filter housing. Ensure this sponge insert is suitable for your scooter to ensure proper operation and optimal filtration. ### Benefits * **Long lifespan:** The double-layer design provides effective filtration and extends the filter's lifespan. * **Optimal engine protection:** Protects the engine from dust, dirt, and other contaminants, ensuring smooth and trouble-free operation. * **Easy installation:** Replacing the filter insert is quick and easy. * **High quality:** The original product guarantees the highest quality and reliability. Provide your scooter with the best protection with this high-quality air filter insert.