Description
A restrictive stock airbox limits your engine’s potential—this K&N universal air filter removes that bottleneck by delivering unrestricted airflow directly to your carburetor. The precision-fit design clamps securely to your carb throat while eliminating parasitic restriction, translating to measurable gains in throttle response and overall engine efficiency. Whether you’re running a street machine or weekend racer, this bolt-on filter upgrade is one of the quickest ways to unlock hidden performance.
- Manufacturer Part Number: RU-4740
- Type: Universal air filter
- Design: Direct clamp-on
- Fitment: Carburetor-mounted (universal)
- Installation: Bolt-on, no fabrication
- Construction: Durable, multi-layer media
- Airflow: Unrestricted, high-flow design
- Compatibility: Standard carb throats
- Replaces: Stock airbox assembly
- Benefit: Improved throttle response






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