Paper Air Filter 16x4

The ALLSTAR PERFORMANCE Paper Air Filter 16x4 (SKU ALL 26030) is a round, paper-element air filter designed for high-performance engine applications requiring efficient particulate filtration and airflow management. At 16 inches in diameter and 4 inches in tall construction, this filter element delivers the intake flow capacity demanded by naturally aspirated and boosted engine builds where air quality directly impacts combustion efficiency and engine longevity.

Paper filtration media in this configuration provides a balance between restriction and dirt-holding capacity—critical for engines operating in dusty environments, high-temperature conditions, or extended service intervals. The 16-inch diameter maximizes filter surface area, reducing pressure drop across the intake system while capturing contaminants that would otherwise accelerate cylinder wear, valve recession, and ring degradation. The 4-inch height is optimized for applications where vertical or radial mounting space is constrained, making this element compatible with popular round-filter housings found in street performance, off-road, and racing engine packages.

Builders and engine shops commonly specify round paper air filters like the ALLSTAR 16x4 for carbureted performance engines, fuel-injected builds transitioning to alternative intake designs, and custom applications where OEM airbox limitations restrict flow potential. The white paper construction is serviceable—cleanable under light air pressure for extended life or replaceable when saturation occurs. Proper fitment requires verification against your specific intake manifold or filter housing design; confirm diameter and height compatibility before ordering to ensure seal integrity and prevent unfiltered air bypass.