Large Oval Ball Milled Air Cleaner

The Billet Specialties Large Oval Ball Milled Air Cleaner (model 15420) is a polished aluminum intake assembly engineered for classic and custom automotive builds that demand both visual impact and functional performance. This premium air cleaner combines a 15-by-8.5-inch oval design with ball-milled detailing to deliver a show-quality appearance while maintaining effective air filtration for carbureted engines. The raised base and 5-1/8-inch carburetor flange provide straightforward installation on compatible applications.

Specifications define this assembly's real-world utility. The 3-inch height integrates cleanly into engine compartments where vertical clearance is limited, while the 5-1/8-inch flange diameter accommodates standard four-barrel carburetor platforms used in street rods, muscle cars, and vintage truck restorations. The polished aluminum finish resists corrosion under normal use and simplifies maintenance—periodic washing restores the original shine without requiring refinishing. The ball-milled detailing creates visual depth and texture that stands apart from flat-panel designs, a distinction that matters in show vehicles and high-visibility engine bays.

This air cleaner addresses the needs of builders seeking bolt-on visual upgrades without sacrificing intake flow. The oversized oval chamber supports adequate air volume for performance carburetors while the raised mounting base improves underhood aesthetics by adding dimension. Enthusiasts restoring pre-1980s vehicles or fabricating custom street machines find the Billet Specialties oval format compatible with traditional engine bay layouts where round assemblies create space conflicts. At 5.95 pounds, the weight penalty is negligible for vehicles using carbureted platforms.