This pulley is pretty straightforward. It's basically a wheel that the serpentine belt wraps around. Its job is to guide the belt and maintain tension as it goes around all the different components – your alternator, power steering pump, air conditioning compressor, and so on. It doesn’t drive anything itself, it just makes sure the belt stays on the right path and with the right amount of pull. It has a screw built in, so you don’t have to worry about sourcing that separately. Think of your serpentine belt as the power delivery system for a lot of important engine functions. The idler pulley is part of that system. It’s positioned strategically to help the belt route around everything smoothly. It helps prevent the belt from flapping or getting misaligned, which could lead to noise or worse. If this pulley goes bad, you’ll notice it. A failing idler pulley will often make a whining or chirping sound, especially when you first start the car or when you put a load on the engine—like turning on the AC. It can also cause the belt to wear out faster. A seized pulley can actually snap the serpentine belt completely, and that’ll leave you stranded, because your battery won’t charge, you’ll lose power steering, and your AC will stop working. It's a relatively inexpensive part, and replacing it is a good way to prevent bigger problems down the road. We carry a lot of these at Fixparts Online, and they’re generally pretty easy to swap out if you’re comfortable doing a little DIY work. Buy risk-free: Idler Pulley for Serpentine Belt with Screw (MPN 38979) is covered by a 3 year manufacturer guarantee!

About Febi

Febi is a well-regarded German brand in the aftermarket sector, known for its extensive range of reliable spare parts. Based in Germany, Febi consistently delivers high-quality components that ensure optimal vehicle performance.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you know they'll fit and work well. • We offer a really wide range of parts – everything from engine components to wear and tear items – so you can find almost anything you need in one place. • Febi has been around for over 75 years, so we have a lot of experience and a reputation for quality. • Our prices are competitive, giving you great value for reliable parts. Febi – trusted quality, available at FixParts Online!