Replacement Tomos A55 moped air filter, fitting US models sold under Revival, Arrow, Sprint, ST, LX, Streetmate from around 2005 to 2013, and replacing Tomos p/n 223741. Tomos sold several model variations in USA. Check your filter shape before ordering! Made in the USA. 

It is shipped un-oiled; add ~2 caps of oil to the filter and squeeze/work it for a minute in the supplied plastic bag, then install. 

FAQ: 

• How do I oil the air filter?
• Put ~2 caps full of oil on filter. Motor oil, 2 stroke oil, bar oil are both fine for this. 
• Put filter in bag and squeeze filter to work the oil into the filter. The bag saves your hands getting messy
• Install
• What kind of foam is used for the filters? 
• OEM spec small pore polyurethane filter foam
• It is fuel safe and washable with soap and water. 
• Is this a an OEM filter? 
• It's a functional replacement for the OEM filter.
• How are the filters produced? 
• Filters is die cut and made in USA