describe 【High-quality material】: The fuel pressure regulator is made of high-quality aluminum alloy, which is safe, reliable and durable. Not easy to damage, stable performance and long service life. 【Excellent Performance】: The special material diaphragm can suppress the average fuel pressure, make the fuel pressure more stable and give you a better experience. 【Adjustable】: This adjustable fuel pressure regulator with pressure gauge allows you to adjust the fuel pressure according to your needs, giving you a convenient experience. [Function Introduction]: The fuel pressure regulator (FPR) can increase the fuel injection amount without changing the fuel supply mode, improve the atomization degree of fuel injection, make the fuel fully burn, and effectively improve the power and torque. 【Easy to Use】: Comes with brackets, wrenches, pliers and other tools, easy to use, very convenient to install and modify. Size: 11*11*7 CM Package includes: 1 * pressure gauge