{"product_id":"bmw-upper-timing-chain-tensioner-11311738700","title":"BMW Upper Timing Chain Tensioner - 11311738700","description":"\u003ch2\u003eBMW Upper Timing Chain Tensioner — 11311738700\u003c\/h2\u003e\n\u003cp\u003eKeep the upper timing chain properly tensioned with this replacement \u003cstrong\u003eBMW Upper Timing Chain Tensioner\u003c\/strong\u003e. BMW part number \u003cstrong\u003e11311738700\u003c\/strong\u003e is used on a wide range of BMW inline-six engines and is specifically responsible for maintaining tension on the \u003cstrong\u003eupper timing chain between the camshafts\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe upper timing chain plays an important role in keeping the camshafts synchronized. As the tensioner wears, excessive slack can develop in the chain, potentially causing \u003cstrong\u003erattling or clanking noises, inconsistent camshaft timing, timing-related fault codes, and accelerated wear of the timing chain and guide components\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eA worn or damaged upper tensioner should be replaced promptly, especially when performing a \u003cstrong\u003eVANOS rebuild or timing system service\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReplacement \u003cstrong\u003eUpper Timing Chain Tensioner\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBMW Part Number: \u003cstrong\u003e11311738700\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaintains tension on the timing chain between the camshafts\u003c\/li\u003e\n\u003cli\u003eHelps prevent excessive timing chain slack\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper camshaft synchronization\u003c\/li\u003e\n\u003cli\u003eRecommended during VANOS and timing system repairs\u003c\/li\u003e\n\u003cli\u003eFits a wide range of M50, M50TU, M52, M52TU, M54, S50 US and S52 applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Does the Upper Timing Chain Tensioner Do?\u003c\/h3\u003e\n\u003cp\u003eUnlike the primary timing chain tensioner, this tensioner is used on the \u003cstrong\u003eupper timing chain between the intake and exhaust camshafts\u003c\/strong\u003e. Its job is to preload the chain and maintain the correct amount of tension as the engine operates.\u003c\/p\u003e\n\u003cp\u003eExcessive slack can allow the chain to move or slap against surrounding components. In severe cases, a timing chain that is not properly controlled can contribute to incorrect camshaft timing and potentially serious engine damage.\u003c\/p\u003e\n\u003cp\u003eBecause this component is located within the same area being serviced during many VANOS repairs, it's a good item to inspect and replace while everything is already apart.\u003c\/p\u003e\n\u003ch3\u003eCommon Symptoms of a Failing Upper Timing Chain Tensioner\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRattling or Clanking Noise\u003c\/strong\u003e — A worn tensioner can allow the upper chain to move excessively, creating rattling, ticking, or clanking noises.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise on Startup\u003c\/strong\u003e — Chain slap may be especially noticeable immediately after starting the engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light\u003c\/strong\u003e — Improper chain tension can contribute to timing discrepancies and related camshaft\/crankshaft fault codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive Timing Chain Slack\u003c\/strong\u003e — A worn tensioner may no longer maintain adequate pressure against the chain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccelerated Guide \u0026amp; Chain Wear\u003c\/strong\u003e — Excessive movement can increase wear on other timing system components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotential Engine Damage\u003c\/strong\u003e — Severe timing problems can result in the valves contacting the pistons on interference engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBMW Fitment Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth align=\"right\"\u003eYears\u003c\/th\u003e\n\u003cth\u003eEngine Family\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e320i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1992–1995\u003c\/td\u003e\n\u003ctd\u003eM50 \/ M50TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e325i \/ 325is\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1992–1995\u003c\/td\u003e\n\u003ctd\u003eM50 \/ M50TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e323i \/ 323is\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1998–1999\u003c\/td\u003e\n\u003ctd\u003eM52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e328i \/ 328is\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1996–1999\u003c\/td\u003e\n\u003ctd\u003eM52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1994–1995\u003c\/td\u003e\n\u003ctd\u003eS50 US\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1996–1999\u003c\/td\u003e\n\u003ctd\u003eS52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE34\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e525i \/ 525iT\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1991–1995\u003c\/td\u003e\n\u003ctd\u003eM50 \/ M50TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE39\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e528i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1997–2000\u003c\/td\u003e\n\u003ctd\u003eM52 \/ M52TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE39\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e525i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2003\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE39\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e530i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2003\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE46\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e320i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2005\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE46\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e323i \/ 323Ci\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1999–2000\u003c\/td\u003e\n\u003ctd\u003eM52TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE46\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e328i \/ 328Ci\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1999–2000\u003c\/td\u003e\n\u003ctd\u003eM52TU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE46\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e325i \/ 325Ci \/ 325xi\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2006\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE46\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e330i \/ 330Ci \/ 330xi\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2006\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE53\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eX5 3.0i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2001–2006\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE83\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eX3 2.5i \/ 3.0i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2004–2006\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\/7 \u0026amp; E36\/8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZ3 2.3 \/ 2.5 \/ 2.8 \/ 3.0\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1997–2002\u003c\/td\u003e\n\u003ctd\u003eM52 \/ M52TU \/ M54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE36\/7 \u0026amp; E36\/8\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZ3 M Roadster \/ Coupe\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e1998–2000\u003c\/td\u003e\n\u003ctd\u003eS52\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eE85\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eZ4 2.5i \/ 3.0i\u003c\/td\u003e\n\u003ctd align=\"right\"\u003e2003–2005\u003c\/td\u003e\n\u003ctd\u003eM54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eEngine Compatibility\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eM50 • M50TU • M52 • M52TU • M54 • S50 US • S52\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eRecommended During VANOS Service\u003c\/h3\u003e\n\u003cp\u003eIf you're already removing the VANOS unit or servicing the upper timing system, this is an ideal time to inspect the \u003cstrong\u003eupper timing chain, tensioner, guide rails, and related components\u003c\/strong\u003e. Replacing an aging tensioner while the engine is already apart can help prevent having to revisit the same area later.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBMW Part Number: 11311738700\u003c\/strong\u003e\u003c\/p\u003e","brand":"OE Supplier","offers":[{"title":"Default Title","offer_id":43217858363486,"sku":"11311738700","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/0845\/3982\/files\/bmw-upper-timing-tensioner-11311738700-01.png?v=1787781893","url":"https:\/\/vanosrebuildkits.com\/products\/bmw-upper-timing-chain-tensioner-11311738700","provider":"VANOS Rebuild Kits","version":"1.0","type":"link"}