This little part basically lets your alternator spin freely in one direction, while still being driven by the engine. It allows the belt to keep turning the alternator to generate electricity, but it prevents the engine from being slowed down by any resistance from the alternator itself. It's a one – way clutch, so it only engages when the engine is turning the alternator. Think of it as a bridge between your engine and your alternator. The serpentine belt runs over both, and this clutch sits right there in between. It allows the alternator to generate power when you need it, but when you let off the gas or the engine slows down, it disengages so the alternator doesn’t drag on the engine. It's a small part, but it's constantly working. If this clutch fails, you’ll notice if it's bad. Usually, it'll make a really noticeable rattling noise, especially at idle. It might sound like something is loose under the hood. Sometimes, the noise will go away when you rev the engine. It can also cause the belt to vibrate and wear out faster. If it seizes up completely, it can actually put a strain on the engine and potentially damage the alternator. A bad one won’t necessarily stop your car from running, but it'll definitely cause problems and should be replaced. You can find these pretty easily, even online at places like Fixparts Online. They aren't too difficult to replace, but if you're not comfortable with auto repair, it's best to have a mechanic handle it. It acts like a shield, preventing issues from spreading to other components. Shop with confidence: Alternator Overrunning Clutch (MPN 33133) comes with a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is a leading global supplier of aftermarket spare parts, offering an extensive range of high-quality components for passenger and commercial vehicles.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality. • We offer a really wide range of parts, covering most makes and models – meaning you can likely find everything you need in one place. • Febi has been around for over 75 years, so we know a thing or two about auto parts and what mechanics need. • Our parts are priced fairly, giving you a great balance between quality and cost. Febi – trusted quality, available at FixParts Online!