K&N Filters air filter details
K&N Filters Replacement Air Filter for H/D Twin Cam F/I (KNNHD-8899)
The K&N Filters Replacement Air Filter for H/D Twin Cam F/I (KNNHD-8899) is engineered for Harley-Davidson fuel-injected Twin Cam motorcycles manufactured from 1999 to 2001. Designed to improve airflow and engine efficiency, this air filter offers a reliable replacement option for riders seeking consistent performance. Made with durable materials for harsh conditions, it helps extend engine life while supporting optimal combustion. This filter fits easily and securely, ensuring a straightforward upgrade or replacement without compromise.
Features and Specifications:
Vehicle Fitment: 1999-2001 Harley-Davidson Twin Cam F/I models
Air Filter Material: Cotton Gauze
Air Filter Shape: Unique
Top Material: Zinc
Weight: 1.4 lb. (0.7 kg)
Height: 1.563 in (40 mm)
Performance Boost: Increases horsepower and torque for enhanced engine output.
Extensive Filtration: Pleated media offers extended service intervals.
Superior Filtration: Multiple layers of woven cotton gauze for excellent contaminant capture.
Custom Fit: Application-specific base seal and sealing bead ensure a precise fit.
American Made: Manufactured in the USA for over 40 years.
Reusable Design: Washable, pre-oiled, and ready for immediate use.
Product identification
- Brand: K&N Filters
- Model / MPN: KNNHD-8899
Air filter replacement: see the listed specifications for this model.




