Walker/EVO Foam Pre Filter Wrap

Fits the Hyper EVO Fuel Injection. Also fits other large oval boxes. Includes one-piece continuous foam wrap (no velcro needed).

Foam Prefilters are the best way to keep dirt out of the engine. We performed many back to back dyno tests with different foam types and chose this one because it shows no loss of horsepower. On track testing ensured that the foam captures almost all of the dirt before it can reach the cotton element of the air filter and saves time because it allows 3 or more races in between cleaning the air filter.

To use, apply a generous amount of the Walker air filter oil or spray the foam prefilter with 77-260 Klotz Foam Air Filter Oil, squeeze out any excess oil using paper towels or rags to squeeze it with, and install it in the airbox.