K&N Universal X-Stream Clamp-On Round Air Filter 3.531in Flg ID/4in OD/5.969in H

K&N Universal X-Stream Clamp-On Round Air Filter 3.531in Flg ID/4in OD/5.969in H

Marsoni

M251S

$167.99

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N Universal X-Stream Clamp-On Round Air Filter 3.531in Flg ID/4in OD/5.969in HSKU: RX 4140 UPC: 024844043238 K&N Universal X Stream Clamp On Round Air Filter 3. 531in Flg ID 4in OD 5. 969in H The K&N RX 4140 universal X Stream clamp on air filter fits custom intake systems on racing vehicles and performance builds requiring a 3. 531 inch flange inside diameter. Its innovative top design increases filter media for greater airflow and dust protection in demanding conditions. This washable reusable filter ensures consistent engine

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Reviewed in the United States on December 22, 2025