{"product_id":"tensioner-timing-chain-183718","title":"Tensioner - Timing Chain for Discovery 3 (2005 – 2009) Timing Chain – 4179611","description":"\u003cp\u003eThe timing chain tensioner maintains correct tension on the timing chain within the 4.4 AJ V8 engine, preventing chain slack that can cause timing deviation, rattling on cold starts, or catastrophic valve-to-piston contact. On the AJ V8, worn or failed tensioners are a known cause of timing chain noise and, if neglected, chain jump. Replacing a faulty tensioner with a correctly specified unit is essential to restoring accurate valve timing and preventing further drivetrain damage.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned specifically for the 4.4 AJ Petrol V8 engine timing chain system\u003c\/li\u003e\n\u003cli\u003eHydraulic tensioner design maintains consistent chain load across operating temperature range\u003c\/li\u003e\n\u003cli\u003eMatches OEM specification for direct replacement without modification\u003c\/li\u003e\n\u003cli\u003eWhen replacing the tensioner, inspect associated timing chain, guides, and sprockets for wear - these are commonly replaced as a set\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003cp\u003eFits Discovery 3 (2005–2009), Range Rover (2002–2009), and Range Rover Sport (2005–2009), all equipped with the 4.4 AJ Petrol V8 engine.\u003c\/p\u003e\n\u003cp\u003eNot sure about fitment? Feel free to get in touch at \u003ca href=\"mailto:info@thomasperformance.co.uk\"\u003einfo@thomasperformance.co.uk\u003c\/a\u003e\u003c\/p\u003e","brand":"Allmakes PR2","offers":[{"title":"Default Title","offer_id":55820389646680,"sku":"4179611","price":39.01,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/0070\/6392\/files\/4179611-600x600.jpg?v=1758862722","url":"https:\/\/thomasperformance.co.uk\/products\/tensioner-timing-chain-183718","provider":"Thomas Performance Ltd","version":"1.0","type":"link"}