This Snow Performance High Flow Check Valve Fittings Unit is a must-have for enhancing the performance of your vehicle. The 4AN Water-Methanol Check Valve is manufactured in the United States, and the clamp ensures a secure fit for optimal performance. The unit comes in black and is designed for maximum efficiency. This Performance Part is perfect for those who want to take their racing experience to the next level. Please note that this item is found to have compounds and chemicals known to the State of California to cause cancer, birth defects, and reproductive harm according to California Prop 65 Warning.