K&N 63 Series vs 77 Series - JeepForum.com
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Unread 08-20-2013, 02:46 AM   #1
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2010 KK Liberty 
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Location: Binghamton, NY
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K&N 63 Series vs 77 Series

I was just looking around and pretty much every website advertises that the K&N 63 series will only fit up to 2009. Is there any reason why it wouldn't fit on a 2010+?

If I was getting a CAI I'd imagine I'd rather have the plastic option compared to a metal one that would soak up heat..



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Unread 08-28-2013, 05:33 PM   #2
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Also watching for an answer, Seagull....but I have another related question : why would 15 states declare the 77 series not street legal??
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Unread 08-28-2013, 09:57 PM   #3
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Your stock airbox is a CAI,both of those you listed are not and will draw heated air from under the hood while the stock box draws cool air from the grill/hood area.

Also a good paper filter is much better then the K&N for a daily driver.If racing then yes you will benifit froma K&N but on a daily driver will only cause issues in 30-60k miles with all the extra dirt it's allowing into the engine.
'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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Unread 08-28-2013, 10:30 PM   #4
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what he said
save the money you'd waste on a K&N and get some real toys
04 Liberty, Kilimanjaro Edition, Rock Lizard RockRails/Roof Rack/Front-Rear bumper,32 inch Goodyear Duratracs,Moabs,4.10s/ 4.25 inch JBA Coilover lift /other goodies
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Unread 08-28-2013, 10:42 PM   #5
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If you want the effect of allowing dirtier air into the engine, and make the 2hp increase you get, save the money and take out your air filter completely. Not a lot different despite what K&N claims, which is put out by marketing teams. Take a google at splitfire spark plugs and the legal ills they faced. Don't believe the hype.
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Unread 08-29-2013, 02:40 AM   #6
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Absolutely as stated above. Oiled filters are a gimmick that allows a grimy build up inside the intake and on sensors. Take a good look at how the air flows through your factory air box and you will see its cold air intake.

What can help a bit, though, is to completely cover the air box and air tube with foil backed bubble wrap insulation to keep the intake temp as low as possible.
91 YJ Sahara, 4.0L, AX-15/NP231, D30/D35
12 Cherokee 4x4,3.7L,
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