K&N Engineering · New
K&N 7-5/16in X 5-3/4in 2-5/8in
MPN E-3987 · Store SKU knnE-3987
Supplier stock checked 11/7/2026, 12:06:33 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The K&N E-3987 is a replacement air filter for K&N Street Shaker Air Intake Systems for Harley-Davidson V-Twin Motorcycles. K&N air filters are washable and reusable, designed to improve performance and protection. K&N washable and reusable replacement filter for Street Shaker Air Intakes Custom Air Filter
Manufacturer fitment & guides
Check E-3987 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y