{"product_id":"belt-tensioner-bmw-1-2-3-4-5-series-x1-x2-x3-x4-x5-m3-m4","title":"Belt Tensioner B38 B48  – BMW F \/ G Series G20 G30 G01 (15-25+)","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\"\u003eB38\u003c\/b\u003e (3-cylinder) and \u003cb data-path-to-node=\"1\" data-index-in-node=\"118\"\u003eB46\/B48\u003c\/b\u003e (4-cylinder) turbocharged petrol engines. This mechanical tensioner is responsible for maintaining constant, regulated pressure on the auxiliary drive belt, ensuring the smooth operation of the alternator, air conditioning compressor, and mechanical water pump.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eIn the B-series engine family, the tensioner is a critical component for engine refinement. Over time, the internal spring mechanism can lose its tensioning force, or the pulley's internal ball bearings can wear out, leading to a \"rattling\" or \"chirping\" sound from the front of the engine, particularly at idle or when the A\/C is engaged. A common sign of failure in these engines is visible belt \"flutter\" or vibration between the pulleys. If the tensioner fails, it can lead to premature belt wear or, in extreme cases, the belt throwing off, which results in an immediate loss of electrical charging and cooling. Replacing this unit during a drive belt service is a standard preventative measure to maintain the reliability of the accessory drive system.\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\"\u003eB38, B46, and B48\u003c\/b\u003e modular 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 \/ G20):\u003c\/b\u003e 2016–Present (318i, 320i, 330i, 330e)\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 (G30):\u003c\/b\u003e 2017–2023 (520i, 530i, 530e)\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 (118i, 120i, 125i, 220i, 230i)\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 \/ G22 \/ G26):\u003c\/b\u003e 2016–Present (420i, 430i)\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 2016–2022 (18i, 20i, 25i, 28i)\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 (G01 \/ G02):\u003c\/b\u003e 2017–Present (20i, 30i)\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 Body with Steel\/Composite Pulley\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MYTY Auto Parts","offers":[{"title":"Default Title","offer_id":48058084065519,"sku":"11288580360","price":1950.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7183\/5631\/files\/2019-G20-330i-B48-Belt-Tensioner.png?v=1773875722","url":"https:\/\/myty.co.za\/products\/belt-tensioner-bmw-1-2-3-4-5-series-x1-x2-x3-x4-x5-m3-m4","provider":"MYTY Auto Parts","version":"1.0","type":"link"}