It is designed for use of both NON-oiled and oiled conditions, and is more dust-absorptive than original air filter models. D1 Spec replacement air filter could extend engine operating life and smooth the air intake, also it increases horsepower by 5% at least.
Having strong galvanized steel mesh and coated with epoxy to make it be antirust and anticorrosive.
Deeply pleating let filtration area increase 20% at least.
Made of unique EPDM frame , onep iece form molded, so that the structure is firm. After testing, the temperature can bear from -30°c to 150°c.
Taking the filter to face on light, we can easy to see intensive of mesh structure. Even the filter has not sprayed with oil, it still can be maintain the best efficiency for dust-proof.