This is a Set of 4 Replacement FOAM elements for the OS #202 Super Air
Cleaner (OSMG2384). Each element is pretreated with a special lubricant which
traps fine dust particles and keeps them from damaging the engine. This reduces
engine wear and promotes longer engine life.
Includes: 4 pretreated blue foam filter elements (42mm dia. x 15mm thick)
Comments:-This is primarily for the OS .21 RX-R engine. Change element when
it's no longer blue in color (can be as often as every run if dusty). -For Complete Filter:OSMG2384
– If you need more information, use these O.S. resources –