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. Reliable performance guaranteed: Tensioner Pulley (MPN 80030001) has a 12-month warranty!

About SWAG

SWAG is a trusted German brand specializing in precision replacement parts for automotive systems. Based in Germany, SWAG is committed to delivering reliable and high-quality components for everyday driving needs.

Why Choose SWAG?

• SWAG parts are made to the same high standards as original equipment, so you get reliable performance. • We offer a wide range of parts for many different car makes and models, so you're likely to find what you need. • SWAG parts are a smart value – you get quality without paying extra for the brand name. • Our parts are designed to last, helping you keep your vehicle running smoothly for years to come. Performance you can rely on – SWAG parts from FixParts Online.