Working on a turbo, supercharger, or intercooler setup? You need a hose that can handle the heat and pressure. This TenKe coupler is built tough. It's a 6-inch long straight reducer, going from an inner diameter of about 3.25 inches to 3.5 inches. It's made from high-quality, 4-ply reinforced silicone, which means it can take high boost pressure without bursting (rated for temps up to 428°F / 230°C and down to -140°F / -60°C). It's perfect for automotive, marine, or industrial applications connecting intake pipes, intercoolers, or radiator lines. Important note: This silicone hose is NOT for fuel or oil lines. It meets industry standards and comes with a 12-month warranty. The blue color looks cool in your engine bay too. Get a secure, leak-free connection for your performance project.