{"product_id":"belt-tensioner-bmw-1-2-3-4-5-7-series-x1-x3-x4-x5-14-25","title":"Belt Tensioner B47 – BMW F \/ G Series F30 F20 G20 G30 G01 (17-25)","description":"\u003cp data-path-to-node=\"1\"\u003ethe \u003cb data-path-to-node=\"1\" data-index-in-node=\"44\"\u003eSerpentine Belt Tensioner Assembly\u003c\/b\u003e for BMW’s modular \u003cb data-path-to-node=\"1\" data-index-in-node=\"97\"\u003eB37\u003c\/b\u003e (3-cylinder) and \u003cb data-path-to-node=\"1\" data-index-in-node=\"118\"\u003eB47\u003c\/b\u003e (4-cylinder) turbocharged diesel engines. This spring-loaded mechanical component is responsible for maintaining the exact tension required for the auxiliary drive belt, ensuring that the alternator, air conditioning compressor, and mechanical water pump operate efficiently without slipping.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eThe B47 engine is known for its high torque and efficiency, which places significant stress on the accessory drive system. Over time, the internal damping mechanism within the tensioner can wear out, leading to excessive belt vibration. Common symptoms of a failing B47 tensioner include a \"rattling\" or \"ticking\" noise at idle, visible belt \"flutter,\" or a \"chirping\" sound when the engine is under load or when the A\/C is engaged. If the tensioner pulley bearing fails, it can lead to a seized belt, causing a sudden loss of steering assistance and engine cooling. Replacing this assembly is a standard preventative measure during a 60,000 to 80,000-mile service.\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003e\u003cb data-path-to-node=\"3\" data-index-in-node=\"0\"\u003eVehicle Compatibility:\u003c\/b\u003e This tensioner is designed for the \u003cb data-path-to-node=\"3\" data-index-in-node=\"58\"\u003eB37\u003c\/b\u003e and \u003cb data-path-to-node=\"3\" data-index-in-node=\"66\"\u003eB47\u003c\/b\u003e diesel engine platforms:\u003c\/p\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003e3 Series (F30 \/ F31 \/ F34 \/ G20 \/ G21):\u003c\/b\u003e 2015–Present (316d, 318d, 320d, 325d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003e5 Series (F10 \/ F11 \/ G30 \/ G31):\u003c\/b\u003e 2014–2023 (518d, 520d, 525d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003e1 \u0026amp; 2 Series (F20 \/ F40 \/ F22 \/ G42):\u003c\/b\u003e 2015–Present (116d, 118d, 120d, 125d, 218d, 220d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003e4 Series (F32 \/ F33 \/ F36 \/ G22 \/ G26):\u003c\/b\u003e 2015–Present (418d, 420d, 425d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,4,0\"\u003e\u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"0\"\u003eX1 \u0026amp; X2 (F48 \/ F39):\u003c\/b\u003e 2015–2022 (18d, 20d, 25d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,5,0\"\u003e\u003cb data-path-to-node=\"4,5,0\" data-index-in-node=\"0\"\u003eX3 \u0026amp; X4 (F25 \/ G01 \/ G02):\u003c\/b\u003e 2014–Present (18d, 20d, 25d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,6,0\"\u003e\u003cb data-path-to-node=\"4,6,0\" data-index-in-node=\"0\"\u003eX5 (F15 \/ G05):\u003c\/b\u003e 2015–Present (25d)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"5\"\u003e\u003cb data-path-to-node=\"5\" data-index-in-node=\"0\"\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,1,0\"\u003e\u003cb data-path-to-node=\"6,1,0\" data-index-in-node=\"0\"\u003eType:\u003c\/b\u003e Automatic Spring-Loaded Tensioner\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,2,0\"\u003e\u003cb data-path-to-node=\"6,2,0\" data-index-in-node=\"0\"\u003eMaterial:\u003c\/b\u003e Die-Cast Aluminium Arm with Steel\/Composite Pulley\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":48058092519663,"sku":"11287619248","price":1750.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7183\/5631\/files\/2017-F30-320d-B47-Belt-Tensioner.png?v=1773876126","url":"https:\/\/myty.co.za\/products\/belt-tensioner-bmw-1-2-3-4-5-7-series-x1-x3-x4-x5-14-25","provider":"MYTY Auto Parts","version":"1.0","type":"link"}