K&N motorcycle high-flow air filter HD-0800, washable Harley fit, improved throttle response

Designed for riders who want improved airflow and durable filtration without frequent replacements, this K&N High-Flow unit uses layered oiled cotton gauze and custom sealing beads to deliver consistent performance. It matches OEM-style dimensions for a direct fit on listed Harley-Davidson models and is built to withstand repeated cleaning cycles so you can maintain peak airflow over many seasons.

How does this filter affect acceleration and throttle feel?

By increasing the volume of air available to the intake, the HD-0800 can sharpen throttle response and contribute to smoother, quicker acceleration under many riding conditions. It is engineered to flow more air than a stock paper element while still trapping contaminants.

• High-flow cotton gauze media improves intake air volume.
• Pre-oiled fabric helps maintain filtration efficiency out of the box.
• Designed to work without mandatory fuel-management changes in most setups.

Will this filter protect my engine as well as stock filters?

The HD-0800 uses multiple layers of oiled cotton gauze combined with a formulated tack agent to capture dirt and debris effectively. While it emphasizes airflow, its construction aims to balance filtration efficiency and engine protection.

• Layered cotton gauze traps fine particles while allowing higher flow.
• Specialized tacking treatment helps retain captured contaminants.
• Durable build resists wear through repeated cleaning cycles.

How do I maintain and reinstall this K&N filter?

Maintenance is simple: clean with a K&N-recommended cleaning kit, allow the element to dry, reapply filter oil if needed, and seat the unit using its OEM-style seals. Proper care extends life and preserves airflow characteristics.

• Use a compatible cleaner and rinse gently; do not use compressed air.
• Air-dry thoroughly before re-oiling the media sparingly and evenly.
• Check sealing beads for proper contact to ensure a secure fit upon reinstall.

Which motorcycles is this filter made for?

The HD-0800 is made for several Harley-Davidson Screamin' Eagle and select factory models from the early 2000s. It’s intended for direct replacement where the OEM-style fit is specified.

• Compatible with Screamin' Eagle Dyna models (2007–2008) and Softail Springer variants (2007).
• Fits Screamin' Eagle Road King, Ultra Classic Electra Glide and Electra Glide models listed.
• Also compatible with specified Fat Boy and Road Glide Screamin' Eagle editions.

Who is this for: Riders who want a long-lasting, washable air filter that improves intake airflow and throttle responsiveness while maintaining reliable filtration. It’s ideal for motorcycle owners with compatible Harley-Davidson models who prefer a reusable, OEM-style replacement that reduces recurring filter purchases and supports routine maintenance.