{"product_id":"main-engine-coolant-expansion-tank-bmw-7-8-series-g-chassis","title":"Engine Coolant Water Bottle G30 G12 – BMW 5, 7 Series (16-23)","description":"\u003cp data-path-to-node=\"1\"\u003e The \u003cb data-index-in-node=\"44\" data-path-to-node=\"1\"\u003ePrimary Engine Coolant Expansion Tank\u003c\/b\u003e for BMW’s flagship G-chassis luxury vehicles. Unlike the smaller auxiliary tank for the intercooler, this is the main reservoir responsible for managing the thermal expansion of the engine's primary cooling circuit.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eThe tank is made from a heavy-duty composite plastic designed to withstand extreme temperature fluctuations and high system pressures. Over time, constant heat-cycling causes the plastic to become brittle, typically leading to hairline fractures along the molded seams or around the mounting tabs. If you notice white residue (dried coolant crust) around the tank or find yourself constantly topping up the system, it is time for a replacement. Catching a leaking tank early prevents catastrophic overheating of the inline-6 or V8 engines.\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"3\"\u003eVehicle Compatibility:\u003c\/b\u003e\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-index-in-node=\"0\" data-path-to-node=\"4,0,0\"\u003e7 Series (G11 \/ G12):\u003c\/b\u003e 2015–2022\u003c\/p\u003e\n\u003c\/li\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\"\u003e5 Series Sedan \/ Touring (G30 \/ G31):\u003c\/b\u003e 2017–2023 (520i, 530i, 540i)\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"6,1,0\"\u003eCircuit:\u003c\/b\u003e Primary Engine Cooling System\u003c\/p\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"6,2,0\"\u003eMaterial:\u003c\/b\u003e PA66-GF30 (Glass-fiber reinforced polyamide)\u003c\/p\u003e","brand":"BMW","offers":[{"title":"Default Title","offer_id":48195145302255,"sku":"17138610658","price":1950.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/7183\/5631\/files\/2019-G12-7Series-Main-Expansion-Tank.png?v=1774391730","url":"https:\/\/myty.co.za\/products\/main-engine-coolant-expansion-tank-bmw-7-8-series-g-chassis","provider":"MYTY Auto Parts","version":"1.0","type":"link"}