Filter Air Kart Asphalt 2.437in Inlet 4in Blue

The Filter Air Kart Asphalt 2.437in Inlet 4in Blue from OTR FILTERS is purpose-built for kart and small-engine automotive enthusiasts who demand reliable air intake filtration without compromising engine breathing. This performance air filter serves go-karts, mini sprint vehicles, and compact off-road applications where engine protection and consistent airflow are critical. Whether you're running asphalt circuits or preparing for competitive racing, this filter replaces inadequate stock units and maintains the clean air supply necessary for optimal combustion and engine longevity.

The 2.437-inch inlet diameter integrates seamlessly with carbureted and fuel-injected kart engines, offering a precise fit that eliminates vacuum leaks and ensures consistent air velocity into the intake tract. OTR FILTERS' blue high-flow design uses multi-layer filtration media that traps contaminants while reducing restriction compared to paper filters, allowing your engine to inhale unrestricted air even under sustained acceleration. The 4-inch overall diameter positions this filter compact enough for tight engine bay layouts while the durable construction withstands vibration, temperature cycling, and moisture exposure typical in outdoor racing environments.

Mechanics and kart builders choose this filter for applications requiring drop-in replacement of OEM intake restrictions on mid-displacement engines. The lightweight 0.9-pound design minimizes rotating mass while the compact footprint (7.3 x 5.6 x 7.4 inches) fits engine compartments where space is at a premium. Installation requires no modification to existing intake manifold or airbox geometry, making this an ideal upgrade for weekend racers and shop builds seeking improved throttle response and peak horsepower without custom fabrication.