Traxxas 5261 Air filter inserts: (trx 2.5 engine)

Traxxas air filter foam insert oiled for the T-Maxx 2.5 .Foam and pre-oiled to trap dirt.  Included: Three Air Filter Inserts for the Traxxas 2.5 engine 
Specifications:  Height: 0.87 (22mm)  Diameter: 0.98" (35mm)