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 connects two 4 inch tubes and is 2 inches in length.

Product Features:

• 4 inch inside diameter
• 2 inches long
• Constructed from durable reinforced rubber
• Designed to be used as a replacement part or for custom do-it-yourself applications