The 267‑32661‑18 Air Cleaner Element Assembly is a genuine replacement filter unit designed for Subaru/Robin small engines. It works by drawing in ambient air through a filter medium that captures dust, debris, and particulates before clean air enters the carburetor and combustion chamber. This process helps maintain optimal engine performance and prevents internal wear from contamina... https://www.wholetoolbox.com/subaru-robin-267-32661-18-air-cleaner-element-assembly