The K&N E-4516 replacement air filter is constructed with an oil-free synthetic media. A tube of grease is provided in the packaging to ensure an airtight fit in case of severe vibrations. This high performance air filter comes with a metal and rubber washer. E-4516 air filters fit several Honda GX small engine models, including the GX140, as well as other applications. The E-4516 air filter provides superior filtration protecting your equipment's engine. This K&N air filter can be cleaned and used again and again, saving you money in the long run.