This is an aftermarket foam air filter element made to suit Suzuki 2-stroke mower engines that use the AO3425 style filter. Its job is simple but important: it catches dust and fine debris before it can enter the engine, helping protect the carburettor and internal components from abrasive wear.

A clean, correctly fitted air filter supports steadier running and more consistent starting, especially on older two-stroke mowers that see regular backyard use. If your existing foam has gone brittle, torn, or won’t clean up properly, replacing it is a quick way to restore proper airflow and filtration.

Foam elements are commonly serviceable. If your engine setup calls for an oiled foam element, clean it, allow it to dry fully, and apply a light coating of clean oil before refitting (avoid over-oiling as it can restrict airflow).

Technical Specifications:
Filter Type: Foam element
Replaces: Suzuki AO3425, GA AIR3599, Toro 81-0100, Bynorm 320-115, Stens 100-727