4in Inlet Cone Filter Red 5.5 in Long

The SPECTRE 4in Inlet Cone Filter Red 5.5 in Long is a precision intake air filter designed for automotive enthusiasts and mechanics seeking reliable engine breathing without sacrificing engine bay aesthetics. This cone-style filter is engineered for vehicles requiring direct bolt-on intake modifications, offering a balance between filtration efficiency and minimal restriction. Whether you're building a street machine, refreshing an older engine, or upgrading a stock intake system, this red cone filter provides the foundation for improved airflow while protecting critical engine components from contaminants.

Constructed with a 4-inch inlet diameter and measuring 5.5 inches in length, this cone filter leverages a tapered design that maximizes surface area for superior filtration coverage while maintaining smooth air velocity through the intake path. The red finish isn't merely cosmetic—SPECTRE's durable coating resists oil saturation and degradation over extended use, critical for filters subject to engine bay heat and moisture. The cone geometry naturally reduces turbulence at the filter-to-intake junction, translating to more consistent air delivery across the RPM range and reducing the risk of filter bypass that plagues poorly designed alternatives.

This filter excels in both street and mild performance applications where engine builders demand quality without guesswork. Installation typically requires a matching intake tube assembly or adapter—verify your intake diameter and inlet configuration before purchase to ensure proper fitment. At 1.75 lbs, it adds negligible mass to your engine bay while delivering tangible improvements in throttle response and mid-range torque when paired with a properly sized intake system. Regular maintenance—gentle cleaning or replacement every 10,000–15,000 miles depending on driving conditions—keeps your engine running clean and efficient.