Universal Clamp-On Air F ilter 6inFLG 7-1/2inB

The Universal Clamp-On Air Filter 6inFLG 7-1/2inB by K&N Engineering is a premium aftermarket intake solution designed for builders and enthusiasts who demand maximum airflow without sacrificing filtration efficiency. This universal clamp-on design allows installation on custom air intake systems, carburetor modifications, and non-OEM intake manifolds where stock air boxes are removed or replaced. Whether you're tuning a classic muscle car, building a hot rod, or upgrading a performance intake setup, this K&N filter delivers the flow characteristics needed to support engine modifications while protecting internal components from contaminants.

K&N's signature red oiled cotton gauze media construction provides measurably higher airflow than traditional paper filters—typically 50–100+ horsepower gains in modified applications—while maintaining excellent dirt-holding capacity for extended service intervals. The 6-inch flange accommodates standard intake ducting, while the 7.5-inch bell allows proper velocity transition and prevents turbulence at the filter entry. The clamp-on mounting system eliminates the need for fabrication; simply position the filter over your intake tube, tighten the clamp, and secure with the provided hardware. K&N's reusable design means you wash and re-oil the media rather than replace it, reducing long-term costs and waste for serious enthusiasts.

This filter is ideal for custom intake builds, turbo and supercharger upgrades, carburetor conversions, and any application where OEM air filtration no longer fits the modified engine's requirements. Mechanics and builders appreciate the universal fit and quick installation—no drilling, splicing, or custom ductwork needed. The compact 8.125 x 8.125 x 8.75-inch profile fits tight engine bays typical of retrofit projects. Before installation, verify that your intake pipe diameter matches the 6-inch flange opening and that clearance exists in your engine compartment for the bell. Compatible with fuel injection and carbureted systems alike, this K&N air filter is an essential upgrade for anyone serious about extracting performance from a modified powerplant.