Last updated at 08/05/2026 05:55:48
K&N E-3804 High Performance Replacement Round Air Filter
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K&N Filters KNE-3804 Replacement Air Filter 16 X 3-1/2"
K&N E-3804 Round Air Filter 16.25" OD
Delivery between 11–21 May $10.95
Kne-3804 - K&N Filter 16" X 3.5""
K&N E-3804 Round Air Filter
Free delivery between Sat – Thu
K&N E-3804 Round Air Filter 16-1/4"OD, 14-1/2"ID, 3-1/2"H | ATOMIC-SHOP EU
Free delivery
K&N Round Air Filter (E-3804)
Delivery $8.80
K&N Air Filter E-3804 + Recharge Kit (RLK-KNN-1331)
Delivery $8.80
K&N Air Filter E-3804 + Aerosol Recharge Kit (RLK-KNN-4566)
Delivery $8.80
K&N E-3804 Round Air Filter
Free delivery between 14–22 May
| Air Filter Material | Cotton Gauze |
| Air Filter Shape | Round |
| Product Style | Round Air Filter |
| Filter Re-Oiling Amount | 2.21 oz (65 ml) |
| Product Box Length | 18.38 in (467 mm) |
K&N E-3804 High Performance Replacement Round Air Filter
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
K&N Filters KNE-3804 Replacement Air Filter 16 X 3-1/2"
K&N E-3804 Round Air Filter 16.25" OD
Delivery between 11–21 May $10.95
Kne-3804 - K&N Filter 16" X 3.5""
K&N E-3804 Round Air Filter
Free delivery between Sat – Thu
| Air Filter Material | Cotton Gauze |
| Air Filter Shape | Round |
| Product Style | Round Air Filter |
| Filter Re-Oiling Amount | 2.21 oz (65 ml) |
| Product Box Length | 18.38 in (467 mm) |
K&N E-3804 Round Air Filter
K&N Custom Air Filter Assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. K&N Custom Air Filter Assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.
K&N Custom Air Filter Assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. K&N Custom Air Filter Assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.
K&N Custom Air Filter Assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. K&N Custom Air Filter Assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.
K&N Custom Air Filter Assemblies are designed with the racer in mind. They incorporate good looks as well as the superior air flow that you expect from K&N. K&N Custom Air Filter Assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide more air flow than other assemblies of this type. Available in 4 different designs, the perfect assembly is sure to be found here. Each complete assembly comes with base, element, and top plate.
in 18 offers
The lowest price for K&N E-3804 Round Air Filter right now is $189.95 at Engine Master, compared across 15 retailers.
The all-time low was $173.96 on 22 Aug 2025 — today's price is 9% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 8 May 2026.
