THE CLASSIC Performance Air Filter 5in inlet ID

The CLASSIC Performance Air Filter 5in inlet ID from Vibrant Performance is engineered for automotive enthusiasts and mechanics seeking reliable intake flow optimization without sacrificing engine protection. This filter addresses a critical need in street and modified vehicle builds: balancing maximum airflow with consistent filtration efficiency across varying driving conditions. Whether you're running a naturally aspirated engine or preparing a boost platform, the 5-inch inlet diameter provides a direct bolt-on solution for custom intake manifolds and cold-air intake systems.

Vibrant's CLASSIC filter design utilizes a proven pleated media construction that increases surface area for sustained intake velocity while maintaining low restriction across the entire RPM band. The 5-inch inlet ID specification matches common velocity stack and custom ductwork diameters, allowing seamless integration into fabricated intake systems. Compact overall dimensions (6.55 x 6.45 x 7.05 inches) enable tight underhood packaging on modified engines where space is premium, while the 1.1 lb weight contributes minimal rotational mass that could otherwise impact throttle response and acceleration feel.

This filter performs optimally in custom and race-focused builds where OEM air box limitations become the bottleneck to engine breathing. Mechanics frequently specify it for turbocharged platforms requiring higher flow capacity, naturally aspirated engine swaps, and dyno-proven intake modifications. Installation requires direct coupling to your custom intake plumbing via the 5-inch inlet; ensure ducting diameter matches precisely for optimal seal and airflow characteristics. Compatible with most bolt-together cold-air systems, this filter represents a foundational upgrade for any serious performance intake combination.