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K&N 57 Series Performance Air Intake Kits

K&N Filter

Question & Answers

3 Answered questions

hi , I already have the K&N Filter 4.0L 6 Cylinder High Performance Intake Kit installed in my 05 LJ , I want to replace the filter only, is is available ?? thank you. Leif Barron.

Asked by Leif from on

Hey Leif, the replacement filter for this kit is RF-1045. We do not have this part listed on our website but you can give me a call at 1-800-333-5535 ext 4835 and I can get it ordered for you. Thanks for your question.

Answered by Devin B. ext 4835 from on

Fits 1999 to 2004 WJ Grand Cherokee 4.7L engine Will this fit my stock 2001 Grand Cherokee Laredo with the 4.7 V8 or even the 4.0? Are is it the same one for both engines ?

Asked by oysterbay58 from Coden, Albama on

Hello, The K&N Filter 57i Filtercharger Injection Performance Kit will fit your WJ with the 4.7L motor. It will not fit the 4.0L. Please let us know if you have any other questions. Thanks!

Answered by Tom S. Ext. 4876 from Coden, Albama on

Is this California SMOG legal?

Asked by matt from Menlo park, ca on

Hello Matt, yes the K&N Filter 57i Filtercharger Injection Performance Kit is legal in California. Here is the CARB EO Number: D-269-34. Please let us know if you have any other questions, thanks.

Answered by Jamey P. from Menlo park, ca on


Riverside, California is home to K&N Engineering, and since creating the reusable high flow cotton air filter nearly 50 years ago, K&N has grown into a world-renowned manufacturer of performance air filters and air intake systems. Jeep owners know they can count on K&N's proven products to stir the hidden beast in engines and keep them filtered and protected. We carry air cleaner assemblies, air intake kits and air filters along with accessories like cleaners and filter wraps. Say hello to gains in fuel economy and horsepower with air intake kits and welcome increased airflow and enhanced styling with K&N's air cleaner assemblies. Shop K&N Filter Now

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