K&N Filter Air Intake Adapter - 21512-1

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  • K&N Filter | Part Number: K/N21512-1
  • Fitment:Universal Fit



K&N adapters allow you to use even more air filter applications.

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Question & Answers

1 Answered question

Q: I need an air filter to have a 2 inch inlet and a diameter of 4 to five inches, and a height of 4- 7 inches. Is there a filter this size or a rubber adapter ring 2 1/2" to 2" or 3" to 2" to accomplish this. I have search a lot of web sites and stores with no luck. I appreciate any help. Thanks, Ted Answer this question

A: Hello Ted, please contact K/n direct regarding technical details on this product.. 800-858-3333, Thank you for your inquiry.

Answered by mikey on 02/11/2015


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