Filter Air Kart Asphalt 2.437in Inlet 4in Blue

The Filter Air Kart Asphalt 2.437in Inlet 4in Blue is a precision engine intake component designed for high-performance asphalt kart racing applications. Built by OTR FILTERS, this round air filter element addresses the critical demand for clean, unobstructed airflow in competitive go-kart engines where fuel efficiency and throttle response directly impact lap times. Designed for operators who demand reliable filtration without sacrificing power delivery, this filter replaces factory or worn elements that compromise engine performance on the track or during practice sessions.

This filter element features a 3-inch diameter with a 4-inch height and incorporates a paper media construction sandwiched between integrated wire mesh support, ensuring structural integrity under high-RPM engine loads common in asphalt kart competition. The blue end cap provides visual identification and serves as a sealing interface, while the 2.437-inch inlet diameter matches OEM specifications for seamless fitment. Paper filtration media captures particulates as small as 10 microns, preventing abrasive contaminants from entering the combustion chamber and extending engine life while maintaining optimal air-fuel ratio consistency across throttle transitions.

Kart mechanics and engine builders working with OTR air intake systems will find this filter element an OEM-equivalent replacement requiring minimal installation time—simply remove the old element and insert the new filter into the housing. Weighing just 0.9 pounds, it adds negligible unsprung mass. This consumable is essential for maintaining peak engine response during competitive seasons, with typical replacement intervals of 6–8 hours of racing depending on track dust conditions and air quality. Competitive drivers prioritizing consistent power delivery and reliable engine health should stock spare elements for mid-season maintenance.