125-512 Inline Fuel Filter is the last defense line to prevent debris from entering your fuel pump, carburetor, and engine. 

Fuels, especially Methanol (alcohol), can break down fuel lines, tanks, and even metals into particles and debris that contaminate your fuel. To help prevent those contaminants from entering your engine, we highly recommend using the 125-512 Inline Fuel Filter for all of your engines. We suggest replacing this part when you replace your fuel line.

Fuel filters fit the standard 1/4" Fuel Line used in karting.