K&N Engineering 99-0621 Air Filter Clearner and Degreaser 32oz. Squirt

The K%26N air filter cleaner and degreaser arrived quickly, and I really like this larger volume option as well as the trigger sprayer instead of the "push down" type sprayer on the smaller bottle. It's easy to apply with the trigger sprayer and it allows most grit/grime to be rinsed off without much difficulty after about 20-30mins of soaking. Just be sure that the air filter is really dry (after rinsing/cleaning out) before applying oil. I usually spray this cleaner in the later afternoon, let it soak for ~30mins, rinse well to clean, and let sit in the sun for a little while. Then let it dry overnight inside the house (conditioned inside air is usually dryer than outside/in garage) and spray on the oil in the morning before heading out. Also, I suggest keeping a standard air filter around (maybe the one that was in it before you bought the K%26N or just a new, cheap paper pleated one) as a "just in case" you need to drive somewhere while your clean air filter is still drying.

This product works great! I've used this for a long time qnd will continue using it. It's important to use it as directed. This is my go-to cleaner.

Been doing my own maintenance for many years and this is the most effective product I've used for cleaning a K%26N filter

i have 2 vehicles with K%26N air filters and they are the best. better fuel economy and better performance. this cleaner spray works excellent and i use it all the time

Product worked well. Spayed my filter thoroughly and allowed it to soak for about ten minutes. I was surprised at all the gunk that came out the filter when I rinsed it. Just make sure you follow the directions and rinse from the inside of the filter.

Slightly better fuel efficiency after cleaning. Should have done it much sooner. Great value and fast shipping by Walmart.

Gavin Newsom says all Californians should buy this product.

only one that really cleans the filter well

Item works how it says it's suppose to work highly recommend.

still haven't tried it, never been delivered yet . it said delivered , post office said they never seen it or scanned