Volvo S40 Power Steering Pump gives the vehicle the hydraulic thrust that allows one to control the small sedan with the tip of the fingertips. The Power Steering Pump is attached to the engine, is rotated by a serpentine belt, and converts crankshaft energy into pressured fluid, which is then transferred through a high pressure hose to the control valve within the rack and pinion and causes a piston to move the steering linkage each time the wheel turns. With the wheel kept straight, the car is kept straight by equal pressure on both sides of the piston; when the wheel is turned, the torsion bar slightly twists and diverts the flow to one side, redirecting the push to where it is required. The much relied on fully hydraulic belt driven Volvo pump, with a simple flow circuit, has been abandoned in favour of an electronically modulated Power Steering Pump that monitors speed and steering angle sensors to refine the output, providing ample assistance in the car park but less support at highway speed to improve road feel. Depending on the version, the reservoir can either be mounted on top of the pump or off road on the fender, both supplying fluid back to the pump through a low pressure return line. The typical danger signals include whining due to low fluid, squealing due to a loose belt, leaks at the hose connectors, and heavy low speed steering, which are indicators of a faulty Volvo unit; observing the amount of fluid and belt tension keeps the legendary Volvo S40 steering confidence intact.
OEM parts are the only choice for top quality and real functionality. They pass strict checks, and they match Volvo's factory specs, so installation is easy. If you need new Power Steering Pump and you want quality and fit. You will find both here. Our site has a wide range of OEM Volvo S40 parts. The prices are unbeatable, allowing you to get value for money. Each genuine S40 Power Steering Pump comes with the manufacturer's warranty. That gives you peace of mind. We ship fast to your door. Order today, and enjoy a smooth, no-hassle upgrade with parts that fit right.