K&N Custom Harley Davidson Air Filter Assembly KNRK-3909-1 Product:Fits 1999-2012 Softail, Fat Boy, Heritage, Night Train, Rocker & Dyna With 1-5/8" Tall Filter - KNRK-3909-1 XX-Large HB902620 PYHB902620 SA2020 Rated

XX-Large HB902620 PYHB902620 SA2020 Rated PRO AIRFLOW

This allows your engine to inhale a larger amount of air than the factory air filter assembly

5L L4 DSL - All 2011 NISSAN NOTE 1

9L L4 F/I - All 1995 BMW 318TI 1

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K&N Custom Harley Davidson Air Filter Assembly KNRK-3909-1 Product:Fits 1999-2012 Softail, Fat Boy, Heritage, Night Train, Rocker & Dyna With 1-5/8" Tall Filter - KNRK-3909-1 XX-Large HB902620 PYHB902620 SA2020 RatedK&N Custom Harley Davidson Air Filter AssemblyFits 1999 2012 Softail, Fat Boy, Heritage, Night Train, Rocker & Dyna With 1 5 8" Tall Filter KNRK 3909 1 KNRK 3909 1 RK 3909 1 K&N's RK Series was developed to get more horsepower from your Twin Cam Harley Davidson engine. Built around the legendary K&N High Flow Air Filter, the this RK Series assembly includes an innovative powder coated billet aluminum backplate that eliminates external breathers and