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- 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
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.