Chain Tensioner for Discovery 3 (2005 – 2009) RH – 4462683G

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The chain tensioner maintains correct tension on the timing chain in the 4.4 AJ V8 engine, preventing chain slack that can cause timing errors, rattling on cold start, or in severe cases, chain jump and catastrophic engine damage. This is the right-hand (RH) tensioner, which is specific to one bank of this dual-tensioner V8 configuration and must not be substituted with the left-hand unit. Replacing a worn or failed tensioner promptly is critical, as the hydraulic mechanism weakens over time and loses the ability to compensate for chain stretch. Key Features Right-hand side tensioner, specific to the RH timing chain run on the 4.4 AJ V8 Hydraulic operation - inspect the oil feed gallery and ensure clean oil supply on installation OEM-specification replacement designed to match original fitment without modification The LH tensioner should be inspected and replaced simultaneously; also check timing chain guides for wear Vehicle Fitment Fits Discovery 3 (2005–2009), Range Rover (2002–2009), and Range Rover Sport (2005–2009), all equipped with the 4.4 AJ Petrol V8 engine. Not sure about fitment? Feel free to get in touch at [email protected] Show more