{"product_id":"bmw-upper-timing-chain-11311432177","title":"BMW Upper Timing Chain - 11311432177","description":"\u003ch2\u003eBMW Upper Timing Chain Replacement — M50 \/ M52 \/ M52TU \/ M54 \/ S50 \/ S52\u003c\/h2\u003e\n\u003cp\u003eReplace a worn or stretched upper timing chain with this \u003cstrong\u003eOE-quality BMW Upper Timing Chain Replacement\u003c\/strong\u003e. The upper timing chain is responsible for keeping the camshafts properly synchronized and works together with the upper timing chain guides and tensioner to maintain accurate valve timing.\u003c\/p\u003e\n\u003cp\u003eAlthough BMW timing chains are designed for a long service life, decades of use, high mileage, worn guides, and failing tensioners can eventually lead to chain wear or elongation. If you're already performing a \u003cstrong\u003eVANOS or timing system service\u003c\/strong\u003e, replacing the upper timing chain along with the guides and tensioner is smart preventative maintenance.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOE-quality replacement upper timing chain\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the original BMW chain\u003c\/li\u003e\n\u003cli\u003eMaintains proper synchronization between the camshafts\u003c\/li\u003e\n\u003cli\u003eWorks with the upper timing chain tensioner and guide rails\u003c\/li\u003e\n\u003cli\u003eRecommended during complete timing system repairs\u003c\/li\u003e\n\u003cli\u003eIdeal for high-mileage engines and preventative maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReplaces BMW Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e11311432177\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e11311730188\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e11311722753\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Does the Upper Timing Chain Do?\u003c\/h3\u003e\n\u003cp\u003eThe upper timing chain is an important part of the engine's mechanical timing system. It transfers rotation through the upper timing assembly to maintain the correct relationship between the intake and exhaust camshafts.\u003c\/p\u003e\n\u003cp\u003eProper synchronization is critical to engine performance and VANOS operation. Excessive chain wear or stretch can introduce additional slack into the system, forcing the tensioner to compensate and increasing wear on the plastic timing chain guides.\u003c\/p\u003e\n\u003cp\u003eIf wear becomes severe enough, incorrect mechanical timing can result in poor engine operation or potentially serious engine damage.\u003c\/p\u003e\n\u003ch3\u003eCommon Symptoms of Timing Chain Wear\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRattling or Slapping Noise\u003c\/strong\u003e — Excessive chain movement can create noticeable noise from the timing case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStartup Rattle\u003c\/strong\u003e — A worn chain, guide, or tensioner may be especially noisy immediately after startup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Engine Performance\u003c\/strong\u003e — Excessive timing chain wear can affect accurate camshaft timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTiming or VANOS Faults\u003c\/strong\u003e — Incorrect mechanical timing can interfere with proper VANOS operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive Chain Slack\u003c\/strong\u003e — A worn chain may require additional tensioner travel to maintain proper tension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccelerated Guide Wear\u003c\/strong\u003e — A loose or worn chain can place additional stress on the plastic timing chain guide surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended During VANOS \u0026amp; Timing Service\u003c\/h3\u003e\n\u003cp\u003eThe chain is only one part of the timing system. The \u003cstrong\u003eupper timing chain, guide rails, tensioner, sprockets, and VANOS components\u003c\/strong\u003e all work together.\u003c\/p\u003e\n\u003cp\u003eIf you're already replacing worn timing chain guides or a failed tensioner, consider replacing the upper chain at the same time—especially on a high-mileage engine. This avoids installing new timing components around an original chain that may already have decades of wear.\u003c\/p\u003e\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eDepending on engine and production date, these BMW part numbers cover applications including:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eM50 • M50TU • M52 • M52TU • M54 • S50 US • S52\u003c\/strong\u003e\u003c\/p\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\"\u003e1995\u003c\/td\u003e\n\u003ctd\u003eS50B30US\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\u003eS52B32\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\u003eImportant Fitment Note\u003c\/h3\u003e\n\u003cp\u003eBMW used different upper timing chain part numbers and configurations depending on \u003cstrong\u003eengine, production date, and market\u003c\/strong\u003e. The three part numbers listed above cover several generations of BMW inline-six engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVerify your original BMW part number, engine code, and production date before ordering\u003c\/strong\u003e, particularly on early M50\/M50TU and transitional applications.\u003c\/p\u003e\n\u003ch3\u003eRefresh the Entire Timing System\u003c\/h3\u003e\n\u003cp\u003eIf you're already deep enough into your BMW engine to replace the VANOS, timing chain guides, or upper tensioner, don't overlook the chain itself.\u003c\/p\u003e\n\u003cp\u003eReplacing the upper timing chain along with worn guides and tensioners gives the timing system a more complete refresh and helps ensure the new components aren't being installed around a worn, high-mileage chain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReplaces BMW Part Numbers: 11311432177, 11311730188, 11311722753\u003c\/strong\u003e\u003c\/p\u003e","brand":"OE Supplier","offers":[{"title":"Default Title","offer_id":43217899389022,"sku":"11311432177","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/0845\/3982\/files\/bmw-upper-timing-chain-11311432177.png?v=1787782771","url":"https:\/\/vanosrebuildkits.com\/products\/bmw-upper-timing-chain-11311432177","provider":"VANOS Rebuild Kits","version":"1.0","type":"link"}