Basically, this little guy keeps your belts tight. Think of it as a spring – loaded arm that constantly presses against the belt, making sure it doesn’t flap around or get loose. It’s got a pulley itself, which the belt runs around, and an internal mechanism – often a hydraulic one, or sometimes spring – loaded – that maintains consistent tension. Some have a little bit of “give” built in, so they can absorb vibrations and prevent the belt from getting stressed too much. You’ll find these on most engines that use belts to drive things like the alternator, power steering pump, air conditioning compressor, and sometimes even the water pump. It’s part of the accessory drive system. The engine spins a crankshaft, and that power gets transferred to those accessories through a series of pulleys and belts. The tensioner pulley acts like a shield, protecting the belt and other components from wear and tear. It ensures the belt stays properly aligned and doesn’t slip, which is critical for those accessories to work correctly. A failing tensioner pulley can cause all sorts of problems. If the tension isn't right, the belt can slip, which means those accessories aren't getting the power they need. You’ll notice if your battery light comes on – that’s often the alternator being affected. Or your power steering might feel heavy. Worse, a really bad tensioner can cause the belt to break completely, leaving you stranded. It’s a relatively inexpensive part to replace compared to the damage a broken belt can cause. You can find a good selection of them over at Fixparts Online, and it’s usually a straightforward repair for a mechanic. It’s one of those things that’s best to address before it becomes a big issue. Shop with confidence: Tensioner Pulley (MPN 74880) comes with a 3 year manufacturer guarantee!

About Febi

Ferdinand Bilstein is well known for reliability and is trusted by repair professionals worldwide.

Why Choose Febi?

• Febi parts are made to the same standards as original equipment, so you get reliable quality without the high price. • We offer a huge range of parts – everything from engine components to brake parts and even small wear items – all in one place. • Febi has been around for over 75 years, so we know what mechanics and drivers need to keep vehicles on the road. • You’ll find parts for many different makes and models, including popular European cars, making it easy to find what you need. Febi delivers excellence, FixParts Online delivers to your door.