4in Inlet Cone Filter Red 5.5 in Long

The SPECTRE 4in Inlet Cone Filter Red 5.5 in Long is a high-performance air intake component designed for custom automotive and powersports applications where engine breathing optimization is critical. This conical air filter element addresses the need for increased airflow while maintaining filtration integrity in performance builds, street rods, and modified engine systems. The distinctive red finish and universal clamp-on design make it a popular choice among builders seeking both functional efficiency and visual appeal under the hood.

Constructed from reusable cotton media, the 4in Inlet Cone Filter features a conical geometry that maximizes surface area for superior filtration without sacrificing flow rate—a critical advantage over standard flat-element designs. The 6-inch base diameter tapers to a 4.75-inch top, creating an efficient aerodynamic shape that reduces turbulence and pressure drop across the filter media. With a 3 to 4-inch flange for secure mounting and a 6.719-inch overall height, this design accommodates a wide range of engine bay configurations while the reusable cotton construction allows for multiple cleaning cycles, reducing long-term operating costs compared to disposable paper alternatives.

Performance enthusiasts, hot rod builders, and motorcycle customizers benefit most from the universal compatibility of this filter element, which pairs seamlessly with aftermarket intake manifolds and velocity stacks using standard clamp-on mounting. The reusable cotton media is easily serviceable—requiring only periodic cleaning with appropriate filter cleaner and re-oiling—making it ideal for high-mileage or frequently-driven builds. Installation is straightforward via the provided flange, and the compact 1.75 lb weight ensures no additional strain on intake systems or engine components.