4in Inlet Cone Filter 8.75 in Long

The SPECTRE 4in Inlet Cone Filter 8.75 in Long is a universal reusable air intake filter designed for custom automotive applications where standard airbox solutions don't fit. This clamp-on conical filter serves off-road enthusiasts, hot rodders, and engine builders who need reliable intake filtration without sacrificing underhood space or aesthetic appeal. The compact design makes it ideal for tight engine bay configurations where traditional box filters prove incompatible.

Built from reusable cotton media, this intake cone filter captures airborne contaminants while maintaining excellent flow characteristics—a critical balance in performance-oriented builds. The 6-inch base diameter tapers to a 4.75-inch top opening, creating the conical shape that maximizes surface area for improved filtration efficiency and longevity. Its 8.75-inch height accommodates various mounting angles, while the 3 to 4-inch adjustable flange accepts standard clamps for secure installation. The distinctive red cotton construction is washable and serviceable, delivering years of reliable operation when properly maintained—a cost-effective alternative to disposable filters.

Custom builders, vintage car restorers, and performance enthusiasts benefit most from this universal intake solution, particularly those fabricating custom intake manifolds or modifying tight engine compartments. The 4-inch inlet diameter accepts standard hose connections, making integration straightforward with aftermarket intake systems or custom fabrications. Weighing just 2.05 lbs, it adds minimal mass while delivering professional-grade filtration. Installation requires basic clamp hardware and straightforward ductwork routing—no specialized tools needed. This filter performs equally well on street machines, show cars, and track-focused vehicles where reliability and appearance matter equally.