Triple Pump KRP4-12-12-12 Hydraulic Gear Pump Hydraulic Gear Pump It operates on the positive displacement principle, meaning it moves a specific, fixed amount of fluid with each revolution of the gears. Standard Hydraulic Function Gear Pump are designed to provide flow in one direction only, making them ideal for applications with fixed, non-reversing flow requirements. Our differential rear oil pump is easy to install, no need for complicated tools, easy to use, direct replacement for your old or broken one. They are manufactured to OEM specification and are ideal replacement for the original cars. This differential rear oil pump is made of high quality material, which are not easy to damage, wear-resistant and corrosion-resistant, high reliability, stable performance, strong and sturdy, long service life., Manufacturer: KNZVUUY