The CLEANER ELEMENT (SKU 4210007020) is the replaceable air filter media used inside the air cleaner/airbox to trap dust and debris before it reaches the carburettor, helping protect the engine and maintain consistent running.

This part is frequently listed as a genuine replacement under Tanaka/Hitachi/HiKOKI references, and some suppliers describe the element as open‑cell foam, while others describe it as felt—both referring to the filter media type depending on the variant/listing.