1.Highquality materials: spring air filter is made of highquality material, are rustproof, corrosionresistant, have a high hardness, are strong, durable, have soft springs, great elasticity and a long life. 2.Package includes: 1 x carburettor 5 x screws 2 x rubber grommets 1 x air filter 3 x membrane 1 x fuel pump 2 x regulator spring 1 x spark plug 1 x spring 3.Motor Regulator SpringsOur regulator spring is used compatible with Briggs Stratton engine regulator spring to release engine noise and reduce power consumption. These springs can solve these noise problems and improve the efficiency of the machine. 4.Easy to replace: the fuel filter kit compatible with spark plugs is easy to install. You can replace it yourself. A simple and quick installation that can solve your engine noise, gives you a different feeling.