4in Inlet Cone Filter Red 3.5in Long

The 4in Inlet Cone Filter Red 3.5in Long by SPECTRE is a high-flow intake filter designed for vehicle owners and mechanics seeking improved engine breathing and air intake efficiency. This cone-style filter replaces restrictive factory intake components, allowing your engine to draw cooler, cleaner air more freely during acceleration and sustained load. Whether you're tuning a street engine, building a performance daily driver, or upgrading an older vehicle's intake system, this filter is engineered to bolt into most universal 4-inch intake ducting applications.

SPECTRE's cone filter design maximizes surface area for filtration while minimizing airflow restriction compared to traditional cylindrical filters. The 4-inch inlet diameter accommodates larger volume air passages, making it ideal for naturally aspirated engines or moderate forced-induction setups where stock intake paths create bottlenecks. The tapered cone geometry promotes efficient laminar flow while the multi-layer filter media traps contaminants without excessive pressure drop. At 3.5 inches in length, this compact configuration fits tight engine bay spaces and allows for flexible intake ducting routing, reducing installation complexity on retrofit applications.

Mechanics and DIY enthusiasts appreciate this filter for custom intake projects, turbo conversions, and engine bay modifications where off-the-shelf solutions don't fit. The bright red finish provides visual engine bay appeal while the universal 4-inch spigot design works with most aftermarket intake kits and silicone coupler clamps. Installation requires a simple hose clamp connection—no welding or custom fabrication necessary. Pair this with a quality intake manifold, cold-air routing, and proper MAF sensor placement for optimal results on carbureted, fuel-injected, or turbocharged engines seeking measurable intake velocity gains.