Oil strainer screen for Viper 125-200 cc motorcycles and similar (China, Minsk). The screen traps large particles and metal shavings in the oil before the pump, protecting the engine parts from wear.
The screen is cleaned at every oil change and replaced if its mesh is torn or deformed or it is heavily contaminated. While you are at it, inspect the oil: metal dust indicates engine wear.
Country of origin: China.
