This little guy basically keeps the timing chain nice and snug. The timing chain connects the crankshaft and camshaft, and it needs to have just the right amount of tension. The tensioner uses oil pressure, and sometimes a ratchet mechanism, to automatically take up any slack in the chain. It pushes against a little shoe or guide, keeping everything from flopping around. Some are hydraulic, meaning they rely entirely on oil pressure. Others have a little plunger that ratchets out as the chain stretches, giving you a bit of a mechanical boost too. It’s part of the timing drive system, which is super critical. The timing chain, and therefore the tensioner, makes sure all the engine’s moving parts are working in sync. It’s what tells the valves when to open and close in relation to the pistons going up and down. If the timing is off, even by a little bit, the engine won’t run right – or might not run at all. It acts like a shield, protecting the engine from serious damage that could happen if the chain jumps a tooth or breaks. Honestly, it’s very important. A worn or failing tensioner can lead to a loose timing chain. You’ll notice if it’s really bad – usually a rattling sound, especially on startup. But it doesn't always start with a huge noise. Sometimes it's a gradual decline in performance. If left unchecked, a loose timing chain can jump timing, causing a misfire, or even catastrophic engine damage. It’s a relatively inexpensive part when you consider the cost of replacing an engine. You can usually find a good quality chain tensioner at places like Fixparts Online. Replacing it proactively as part of regular maintenance is a smart move, especially on higher mileage vehicles. Shop with confidence: Chain Tensioner (MPN 25408) 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. Performance you can rely on – Febi parts from FixParts Online.