This part basically keeps the right amount of tension on your serpentine belt – that’s the belt that runs a lot of your accessories like your power steering pump, alternator, and air conditioning compressor. It has a spring – loaded arm and a pulley, and it automatically adjusts to keep the belt from slipping or getting too tight. Sometimes it also has a damper inside to help absorb vibrations and reduce noise. Think of it like this – the belt is what powers those accessories, and the tensioner is what makes sure the belt stays connected and working smoothly. Without it, the belt will flap around and won’t turn those parts properly. It’s a critical piece in keeping everything running as it should. If the tensioner goes bad, you'll likely notice pretty quickly. You’ll probably hear a whining or squealing noise, especially when you turn the steering wheel or when your engine is under load. A failing tensioner can also cause the belt to wear out faster, or even break, which could leave you stranded. It can even damage other components if the belt fails. It acts like a shield, preventing those bigger problems. You’ll notice if it’s starting to fail—usually through noise or if your battery light comes on because the alternator isn’t charging right. A lot of people find what they need at places like Fixparts Online, but any good auto parts store should have one for your vehicle. It's definitely a part you want to keep an eye on and replace when it starts to show wear. Upgrade your vehicle with Belt Tensioner (MPN 1987945805), covered for 12 months!

About Bosch

Robert Bosch GmbH is a global leader in automotive technology, offering high-quality parts and systems that enhance vehicle efficiency, safety, and reliability.

Why Choose Bosch?

• Bosch parts are known for lasting a long time, so you won’t have to replace them often. • They perform reliably, helping to keep your vehicle running smoothly and safely. • Bosch invests a lot in research and development, meaning you’re getting the latest technology. • Mechanics trust Bosch, and that’s a good sign of quality and performance you can depend on. Drive with confidence – choose Bosch parts at FixParts Online.