Round 6-3/8in Air Cleaner Ball Milled

The Billet Specialties Round 6-3/8in Air Cleaner Ball Milled assembly (part number 15120) is a premium polished aluminum air filter housing designed for high-performance engine builds where aesthetics and functional airflow management matter equally. This 6.375-inch diameter unit delivers the visual impact of ball-milled detailing while managing intake air temperature and volume through a clean, engineered design that complements modern engine compartments and custom installations.

Standing 3 inches tall with a raised base and 5-1/8-inch carburetor flange, this assembly integrates cleanly into tight engine bays without sacrificing clearance or airflow dynamics. The ball-milled surface finish on polished aluminum resists oxidation better than standard finishes while maintaining the refined look that discerning builders expect. At 1.95 lbs, the assembly's weight distribution doesn't compromise engine bay balance. The kit configuration ensures all necessary components arrive ready for installation, eliminating guesswork during fitment.

Builders prioritizing engine bay presentation without cutting corners on functionality will recognize Billet Specialties' reputation for precision CNC manufacturing and finishing. The round 6-3/8-inch profile suits applications where classic proportions and modern machining converge—custom street engines, show builds, and restorations that demand concourse-quality details. The carburetor flange compatibility (5-1/8 inch) narrows the field to specific carb platforms; verify flange dimensions against your fuel delivery system before ordering to ensure a correct seal.