in 14 offers
The lowest price for K&N Universal X-Stream Clamp-On Air Filter RX-4950 right now is $165.95 at Auto Surplus, compared across 14 retailers.
The all-time low was $80.99 on 13 Oct 2026 — today's price is 105% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 20 Oct 2026.
K&N Universal X-Stream Clamp-On Air Filter RX-4950
Last updated at 20/10/2026 00:57:09
K&N RX-4950 Universal X-Stream Clamp-On Air Filter: Round Tapered; 2.5 in (64 mm) Flange ID; 5.5 in (140 mm) Height; 6 in (152 mm) Base; 5 in (127 mm)
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 AIR FILTER RX-4950
Free delivery between Thu – Mon
K&N Round Tapered X-Stream Clamp-On Air Filter
Delivery between Fri – Mon $8.80
K&N RX-4950 X-Stream Clamp-On Air Filter 2.5" Flange
Delivery between 20–30 Oct $10.95
K&N Filters RX-4950 Universal X-Stream Clamp-On Air Filter - 2.5" ID x 6" Base OD x 5" Top OD x 5.5"
Delivery between 21–27 Oct $28.99
K&N Filters RX-4950 Universal X-Stream Clamp-On Air Filter - 2.5" ID x 6" Base OD x 5" Top OD x 5.5"
Next-day delivery $19.99
K&N 2.5" EXTREME POD FILTER - KNRX-4950
Delivery $16.05
K&N 2.5" Extreme Pod Filter KNRX-4950 | K&N Filters
Free delivery
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!
KNRX-4950 K&N 2 1/2 Extreme Filter Clamp On
K&N Universal X-Stream Clamp-On Air Filter - RX-4950
| Filter Type | Washable, Reusable |
| Airflow | Low restriction, Higher air flow |
| Filtration Efficiency | Up To 99% Efficiency |
| Component Material | Cotton Gauze, Rubber |
| Included Components | Air filter |
K&N RX-4950 Universal X-Stream Clamp-On Air Filter: Round Tapered; 2.5 in (64 mm) Flange ID; 5.5 in (140 mm) Height; 6 in (152 mm) Base; 5 in (127 mm)
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 AIR FILTER RX-4950
Free delivery between Thu – Mon
K&N Round Tapered X-Stream Clamp-On Air Filter
Delivery between Fri – Mon $8.80
K&N RX-4950 X-Stream Clamp-On Air Filter 2.5" Flange
Delivery between 20–30 Oct $10.95
K&N Filters RX-4950 Universal X-Stream Clamp-On Air Filter - 2.5" ID x 6" Base OD x 5" Top OD x 5.5"
Delivery between 21–27 Oct $28.99
| Filter Type | Washable, Reusable |
| Airflow | Low restriction, Higher air flow |
| Filtration Efficiency | Up To 99% Efficiency |
| Component Material | Cotton Gauze, Rubber |
| Included Components | Air filter |
