4in x 2in Air Filter

The SPECTRE 4in x 2in Air Filter (SPE-4809) is engineered for automotive enthusiasts and mechanics seeking reliable intake filtration for compact engine bays and custom modifications. This rectangular air filter excels in applications where space constraints demand a smaller footprint without sacrificing airflow capacity or filtration efficiency. Whether you're running a carbureted engine, retrofitting a vintage platform, or optimizing airflow in a tightly packaged engine compartment, this filter provides the solution experienced technicians turn to for consistent, dust-free combustion.

Built by SPECTRE, a trusted name in automotive intake systems, this 4-inch by 2-inch filter utilizes pleated media construction to maximize surface area while maintaining minimal resistance to engine intake. The compact 5 x 2.5 x 6-inch dimensions allow seamless integration into custom air box assemblies, street rods, and performance builds where traditional round filters won't fit. The lightweight design at 0.207 lbs reduces system weight without compromising structural integrity, and the pleated paper media captures contaminants effectively, keeping your fuel mixture clean and your combustion chamber protected from premature carbon buildup.

This filter benefits mechanics maintaining hot rods, classic car restorations, and custom engine builds where standard intake manifolds have been replaced or relocated. Installation requires a compatible air box housing designed for rectangular filters—measure your intake opening before ordering to ensure proper fit. Routine inspection and cleaning extend service life, making this an economical choice for builders who prioritize durability and repeatability in their modifications. SPECTRE filters are replacements only; verify mounting tabs, gasket surfaces, and intake diameter specifications for your specific application before purchase.