When a Power Steering (PS) Pump goes bad or fails, a driver most evidently will experience an abnormal whining/grinding noise occurring while turning the wheel and will eventually feel loss of steering response & assist. The PS pump is an essential component, as its responsibility is to send hydraulic fluid to the power steering rack and pinion. HL Mando OE power steering pumps are just like the one from the factory. Our pumps come complete with pulley and ready to install. Don't risk using just any aftermarket PS pump, get the job done right with the original – We Are OE!