This hose is really simple in what it does – it carries the hydraulic fluid under pressure from the power steering pump to the steering gear, and sometimes back again. It's basically a pathway for the fluid that gives you power assist when you turn the wheel. It has to be able to handle a good amount of pressure, and keep the fluid sealed inside. Some vehicles have multiple lines, a high – pressure line going to the steering gear and a low – pressure return line. Think of your power steering system like your muscles when you lift something heavy. The pump is like your bicep, providing the force, and the fluid is what transfers that force to the steering gear, which actually turns the wheels. This hose is one of the crucial veins in that system. Without it properly carrying the fluid, you wouldn’t have any or very limited power steering assist. It’s part of a closed loop, so it needs to be leak – free to maintain pressure. If this hose fails, you’ll notice pretty quickly. You’ll probably experience a sudden loss of power steering, making the steering very heavy and difficult, especially at low speeds. A leak could also spray fluid onto other engine components, which isn’t good. It acts like a shield protecting other parts from contamination. These hoses are rubber and reinforced with material to withstand the pressure, but over time and with heat/exposure to the elements, they can crack, become brittle, or leak. You can find replacements pretty easily, I’ve seen good options at places like Fixparts Online, and it’s usually a job a decent DIYer can tackle, but if you're not comfortable, it’s best to have a professional do it. Upgrade your vehicle with Hose (MPN 7M3422889E), covered for 12 months!

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