K&N Recharger Kits contain K&N air filter cleaner and air filter oil for cleaning any K&N Air Filter. Restores air flow efficiency so your K&N air filter performs like new!
Most helpful customer reviews
189 of 199 people found the following review helpful.
A Smart Buy from Novice to Expert
By M. Duran
I try to consider several factors in the balance of living well and affordable. I must say that the K&N air filter (not included) and the recharger kit (listed here) is an easy, affordable, and effective combination of product that is well worth the buy and the time. All you do to "recharge" is spray the cleaner (in spray bottle) onto both sides of the filter, let sit for ten minutes to break down the grime, let the ~natural flow~ of water (not pressurized by a nozzle) run through the inside (cleaner side) of the air filter to flush the grime out of the other side (repeat if really dirty [doesn't usually need more than once for me and I change it every 6,000-10,000 miles]), and let dry; I shake it out and then stand it up in the (Arizona) sun to make it dry in ten to fifteen minutes. Then, spray the oil (in the aerosol can) evenly onto the outside (the once dirtier side), and let sit for about twenty minutes to allow for the oil to absorb. Check the crowns and grooves on the opposite side to see the places that do not have or need more oil; the filter is whitish and the oil is red in color so you will be able to see where the oil is and how much is there. Repeat until the whole filter is red with oil, wipe the excess oil from the rubber frame, install the clean filter back into your vehicle, start the engine, and listen to that air flow :D.
*NOTE: I use the cleaner and oil very liberally and one recharger kit has lasted me to my third one which I am doing right now. I still have enough for one more "less liberal" recharge for next time. Also, to thoroughly oil the filter in its grooves, it takes a little patience but again, it's well worth it. Time to go finish my recharge! Take care and I pray this helped!
*UPDATE: It has now been over a year since I have done this review, so I thought I would give some feedback about observations I made recently. The product and air filter still work great! However, I would highly recommend using a "less liberal" amount of oil. When I looked at my spark plugs, they were very rich due to an excess of air filter oil. How do I reduce or prevent this? When applying the oil, apply it to only part of the filter and give it a good twenty minutes; theoretically, this will allow the time needed for the oil to naturally absorb into the fibers of the filter (as they say in the instructions... anxious me). Less excess, less spark plug buildup, and maybe an extra charge out of the kit! If you experience the buildup on your spark plugs, you can just take a wire brush to them. However, blow them off well before re-installing them. We don't want particles in our cylinders :). Also, as a result of a reply to this post, I found out and affirmed through K&N's FAQ that unless you are in an excessively dusty environment every day, K&N's recommendation is to clean their air box filters every 50,000 miles and their conical filters every 100,000 miles! It is very dusty here in Arizona, but my 10,000 mile recharge is still way too frequent. Thank you Gator J. I pray this helps!
33 of 33 people found the following review helpful.
Works great, use every 50K miles
By J. Morgan
You'll need this kit to maintain your K&N filter. I clean mine about every 50,000 miles.
Save your paper air filter (it should fit in the K&N box). Clean your K&N and use the paper filter while your K&N is drying. Then just oil the K&N and swap them back.
32 of 34 people found the following review helpful.
Just what you need to keep your vehicles air filter like new!!
By Tracy N.
I bought this to renew my K&N drop in air filter for my 2010 honda civic coupe. Here is a little tip that should work with any vehicle that uses a drop in filter that needs to be re-oiled.
When you first remove the filter from the vehicle, make a note of the actual dirty side of the filter (most likely the bottom). This would be the side that would accumulate stuff like small pebbles, bugs, loose dirt, etc.
Shake the filter to remove all this loose debris and to get it out of the pleats of the filter. Proceed to liberally spray the cleaner on both sides of the filter. Make sure you have eye protection and gloves just to be on the safe side. Let the cleaner sit for about 5-10 minutes then rinse off the filter (do NOT use a power washer. Regular cool running water from your sink or garden hose would suffice). Repeat if necessary depending on how soiled the air filter is. You'll notice that using the cleaner has made the filter turn white. When the filter is nice and clean and completely dry, you'll now proceed to use the oil.
Remember which side of the filter was the "dirty" side? When you re-oil the filter, you'll be spraying the oil on just ONE side of the filter. Reason being is that spraying on the dirty side is the side where contaminated air comes from and the other side would be the filtered air. Spraying oil on both sides has the potential of having the oil flow through the rest of your air intake system and might throw a CEL due to oil being in other parts of the engine and/or sensors (like MAF).
You want to spray the filter like you would painting car parts I suppose. Light coats and making sure that there is even coverage on the filter. I'd give time in between sprays to let the filter "soak" the oil. Keep spraying the filter until both sides of the filter are both pink (like as if you just bought the filter). Wipe off excess oil that is on the filter and reinstall onto vehicle.
It's a simple, but time consuming process but I think well worth it to have a nice clean air filter for your engine.