K&N Filters air filter details
K&N Filters Replacement Element for Custom Air Filter (KNNE-3040)
The K&N Filters Replacement Element for Custom Air Filter (KNNE-3040) is designed to fit the RK3929 intake system. Built for reliability and consistent airflow, this replacement element helps maintain your engine's performance by ensuring optimal air filtration. It is ideal for users who require a dependable replacement for custom K&N assemblies. Whether replacing a worn-out filter or upgrading your current setup, this unit provides excellent compatibility and fitment for the RK3929.
Features and Specifications:
Air Filter Shape: Oval
Air Filter Material: Cotton Gauze
Height: 2.25 in (57 mm)
Inside Length: 8.063 in (205 mm)
Inside Width: 1.625 in (41 mm)
Outside Length: 9.375 in (238 mm)
Outside Width: 6.125 in (156 mm)
Vehicle Fitment: Replacement filter element for K&N RK3929 custom assemblies
Product Type: Replacement air filter for RK Series air cleaner assemblies.
Performance Boost: Increases horsepower and acceleration.
Reusability: Washable and reusable design.
Filtration Quality: High-flow media ensures exceptional filtration.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNE-3040
Air filter replacement: see the listed specifications for this model.




