The HEIBTENY 3-Way Fuel Tank Valve with Knob Nut is a perfect solution for those seeking an upgrade for their 335, 400, or 500 gas cocks, each made with a compatible plastic and metal construction. This replacement part ensures optimum flow control and easy installation. Furthermore, it is compatible with the Easy Install Flow Control Switch Kit, making it a seamless fit for your project. With its durable design and smooth operation, you're sure to experience a significant improvement in performance. Install it now and enjoy hassle-free operation with the HEIBTENY 3-Way Fuel Tank Valve and Knob Nut.