Product description
K&N couplers are constructed from high-quality reinforced rubber and made to last. This coupler adapts a 3-1/2 inch to a 3-1/4 inch tube and is 2-1/2 inches in length.
HOSE; 3.5in. TO 3.25in.ID X 2.5in.L TPRD MOLDED
Rubber Hose
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Supplier details checked 2026-09-23 · Test catalog
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K&N couplers are constructed from high-quality reinforced rubber and made to last. This coupler adapts a 3-1/2 inch to a 3-1/4 inch tube and is 2-1/2 inches in length.
HOSE; 3.5in. TO 3.25in.ID X 2.5in.L TPRD MOLDED
Rubber Hose
Designed to be used as a replacement part or for custom do-it-yourself applications
Designed As Replacement Or Do It Your Self Applications
K&N Hose 3.5in To 3.25inid X 2.5inl Tprd Molded
K&N rubber hose couplers are designed to connect intake tubes for custom do-it-yourself racing air intake applications or used as a replacement part. K&N couplers are constructed from high-quality reinforced rubber and made to last. This coupler adapts a 3-1/2 inch to a 3-1/4 inch tube and is 2-1/2 inches in length.
Engine Air Intake Hose