AEM developed its Dryflow air filters in collaboration with K&N, the inventor of the high-flow air filter, blending the strengths of cotton-gauze media into a new synthetic design. The three-dimensional filtering media combines depth loading with a structural screen wire to boost airflow and simplify cleaning, all without requiring oil.
Specifications:
- Flange ID: 4 in
- Element Height: 7 in
- Filter Media: Dryflow Synthetic (Oil-Free, Washable)
- Warranty: Limited Lifetime
- Part Number: 21-2057DK
FAQ
What size is this AEM Dryflow filter?
It has a 4-inch flange ID and a 7-inch element height.
Does this filter require oiling like a cotton-gauze filter?
No. The Dryflow synthetic media is oil-free and washable, developed with input from K&N technology.
Is this filter covered by a warranty?
Yes, it's backed by AEM's limited lifetime warranty.

