All modern vehicles are equipped with power steering: traditional hydraulic power steering (HPS), electric power steering (EPS), or “hybrid” electro-hydraulic power steering (EHPS). The power steering pump is a crucial component of the hydraulic power steering system. It generates pressure in the working fluid, essential for the system's operation and reducing the effort required by the driver on the steering wheel.
Failures of the power steering pump are typical and can include wear on the rotor vanes, bearing wear, and the malfunction of the control valve. A common cause of steering pump failure is low power steering fluid, untimely fluid replacement, contamination, or using an unsuitable type of fluid.
Problems with the power steering pump are often indicated by noticeable symptoms, such as noise during operation (a distinct hum, especially when turning the wheels) and increased effort required when turning the steering wheel. In some cases, it is possible to repair the power steering pump, but if there is significant wear on internal components, replacement of the pump may be necessary.
MASUMA power steering pumps are manufactured to precise OEM specifications, adhering closely to the design of OEM parts. The specifications of MASUMA pumps, including geometry, performance, and generated pressure, are identical to the original components. Therefore, the reactive response and steering effort after installing a MASUMA pump will align with factory standards.
The vanes of MASUMA power steering pumps are distinguished by increased strength and resistance to wear, while high-quality bearings and precise assembly ensure noise-free operation of the unit.
Structurally, power steering pumps come with a pulley, with a pulley and a fluid reservoir, or without it.
MASUMA's catalogue includes power steering pumps for Toyota & Lexus, Nissan & Infiniti, Mitsubishi, Subaru, Mazda, Honda, Suzuki, and Chery. The diameter of the pulley (if present), the number of grooves, and other specifications are provided on each pump's page. The product range is constantly expanding, so you can check the availability of a power steering pump for your vehicle in the parts finder.