When the screen is no longer visible some place on the air filter, it is time to clean it. Check out the pictures of dirty and clean air filters to help determine if your K&N air filter needs cleaning.
The K&N air cleaning kit is available from O’Reilly Auto Parts or Summit Racing for about $13.00.
STEP 1 - Apply K&N Air Filter Cleaner
Liberally spray K&N Air Filter Cleaner onto both sides of filter and allow to soak for 10 minutes to loosen the dirt. Do not allow cleaner to dry on air filter.
STEP 2 – Rinse Your K&N Air Filter
Rinse off your air filter with cool low-pressure water applied to the clean side out in order to flush the dirt out of the filter. Continue to rinse the filter until all traces of cleaner are gone. It may be necessary to repeat steps 1 and 2.
STEP 3 – Dry Your K&N Air Filter
After rinsing your filter, gently shake off the excess water and only allow filter to dry naturally. Do not apply oil until the air filter is completely dry.
STEP 4 – Apply K&N Air Filter Oil
Apply K&N air filter oil evenly along the crown of each pleat. Allow the oil to wick for approximately 20 minutes then touch up any light areas on either side of filter until there is a uniform red color at all areas.
Click Below for the K&N Cleaning Video