101751 Febi Alternator Overrun Pulley

Basically, this little component lets your alternator freely spin in one direction, but locks up in the other. Think of it like a one – way street for power. It allows the engine to drive the alternator without any issues, but if the alternator starts to slow down – say, because of a heavy electrical load or even a failing alternator – it disengages. That prevents the engine from being dragged down or even damaged by a seized or struggling alternator. It handles the transfer of power from the engine to the alternator, and then back again, smoothing everything out. It’s positioned between the engine’s crankshaft and the alternator. When the engine is running normally, the clutch is engaged and the alternator spins with it, charging your battery and running your electrical system. If the alternator experiences resistance—a bad bearing, for instance—the clutch slips, preventing that resistance from impacting the engine’s rotation. It’s a crucial piece in making sure your charging system functions smoothly without putting strain on other parts. Without a functioning overrunning clutch, a failing alternator can actually damage the front of your engine. It’s kind of a safeguard. You’ll notice if it’s gone bad because you might hear a rattling or grinding noise coming from the front of the engine, especially at idle or low speeds. You may also see warning lights on your dash related to the charging system. It acts like a shield, protecting more expensive components. If you're doing a water pump replacement, it’s often smart to replace this at the same time since it’s right there and often requires similar labor. You can find a good one at places like Fixparts Online, or of course, we carry them here too. Shop with confidence: Alternator Overrunning Clutch (MPN 101751) 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 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. Drive with confidence – choose Febi parts at FixParts Online.