{"product_id":"bmw-deflection-pulley-1","title":"Original BMW Accessory Belt Deflection Pulley for BMW X5 xDrive35d (2009–2013)","description":"\u003cp\u003eThis Original BMW deflection pulley is the idler that guides the accessory drive belt on the M57N2 diesel six-cylinder in the 2009–2013 BMW X5 xDrive35d. It works with the belt tensioner to keep tension on the belt, and it sets the belt's path around engine-driven accessories such as the power steering pump, water pump, A\/C compressor, and alternator. BMW's parts data places this pulley on the E70 X5 diesel range, both before and after the facelift. BMW's parts data lists this part number in production since January 2019. Each pulley is made in France.\u003c\/p\u003e\u003cp\u003eOriginal BMW Parts carry a 24-month parts warranty.\u003c\/p\u003e\u003cp\u003eAn idler pulley has no adjustment of its own. It spins on an internal bearing and only redirects the belt, while the tensioner supplies the spring load. Because it runs whenever the engine runs, the idler is easy to overlook during belt service even though it matters as much as the tensioner. Outside North America, BMW fits the same deflection pulley to the E70 3.0d, 3.0sd, and 3.5d, which all share the M57N2 engine with the U.S. xDrive35d. \u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: BMW, sold as an Original BMW part\u003c\/li\u003e\n\u003cli\u003ePart number: 11-28-8-585-243\u003c\/li\u003e\n\u003cli\u003eBMW part name: deflection pulley\u003c\/li\u003e\n\u003cli\u003eFunction: accessory drive belt idler pulley\u003c\/li\u003e\n\u003cli\u003eEngine: M57N2 diesel six-cylinder\u003c\/li\u003e\n\u003cli\u003eChassis: E70 X5 and E70 facelift\u003c\/li\u003e\n\u003cli\u003eProduction start: January 2019\u003c\/li\u003e\n\u003cli\u003eCountry of manufacture: France\u003c\/li\u003e\n\u003cli\u003eSold individually, one pulley per order\u003c\/li\u003e\n\u003cli\u003eWarranty: 24-month Original BMW parts warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation \u0026amp; Tuning Notes\u003c\/h3\u003e\u003cp\u003eIn most cases, the idler pulley should be replaced at the same time as the belt tensioner. Check whether the old pulley sits out of line with its mounting surface, and replace it together with the belt tensioner.\u003c\/p\u003e\u003ch3\u003eCommon Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow do I know the deflection pulley is worn?\u003c\/strong\u003e\u003cbr\u003eWatch for visible wear or grooves on the pulley, belt squealing, and chirping or grinding from the bearing. Odd or uneven belt wear and a pulley that sits out of line with its mounting surface also point to the idler.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this fit a gasoline X5?\u003c\/strong\u003e\u003cbr\u003eNo. BMW applies it to the M57N2 diesel in the E70, which in the U.S. is the xDrive35d.\u003c\/p\u003e\n\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eCheck the table below for the exact year, model, submodel, and any listed notes. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003cth align=\"left\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX5\u003c\/td\u003e\n\u003ctd\u003exDrive35d\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2010\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX5\u003c\/td\u003e\n\u003ctd\u003exDrive35d\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2011\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX5\u003c\/td\u003e\n\u003ctd\u003exDrive35d\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2012\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX5\u003c\/td\u003e\n\u003ctd\u003exDrive35d\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eX5\u003c\/td\u003e\n\u003ctd\u003exDrive35d\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"SSF E","offers":[{"title":"Default Title","offer_id":47779278782642,"sku":"BSMS_11-28-8-585-243","price":72.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/7F8D3872-D6D0-4048-96E7-B28DFD648D22-2.jpg?v=1785452960","url":"https:\/\/pmbperformance.com\/products\/bmw-deflection-pulley-1","provider":"PMB Performance","version":"1.0","type":"link"}