{"product_id":"airtec-motorsport-radiator-upgrade-for-bmw-e9x-m3","title":"AIRTEC Motorsport Radiator Upgrade for BMW E9x M3","description":"\u003cp\u003eThe AIRTEC Motorsport Radiator Upgrade for the BMW E9x M3 (E90, E92, E93) is a direct replacement lightweight radiator featuring a tube-and-fin aluminium core that is \u003cstrong\u003e25% larger\u003c\/strong\u003e than the original BMW item.\u003c\/p\u003e\u003cp\u003eThis design increases the cooling system's capacity as well as improving its efficiency, allowing it to retain lower running temperatures compared to an original unit during prolonged or hard use. Ideal for modified or track-orientated vehicles that operate with constantly elevated temperatures, or for hotter climate countries where cooling can be an issue.\u003c\/p\u003e\u003cp\u003eBack-to-back track testing in June 2025 demonstrated an average coolant temperature reduction of \u003cstrong\u003e7.5°C (9%)\u003c\/strong\u003e across two full track sessions compared to the standard radiator, with a maximum temperature difference of 10.7°C.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e25% increase in capacity over the original BMW radiator\u003c\/li\u003e\n\u003cli\u003eProven 9% reduction in average coolant temperature — track tested\u003c\/li\u003e\n\u003cli\u003eLarger 40mm tube-and-fin aluminium core\u003c\/li\u003e\n\u003cli\u003eLightweight aluminium construction with welded end tanks\u003c\/li\u003e\n\u003cli\u003eConnects directly to original mounts and connectors\u003c\/li\u003e\n\u003cli\u003eDirect replacement — no cutting or trimming\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Minor trimming to the plastic mounting trim is required to fit this item.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAIRTEC part number: ATRADBMW8\u003c\/strong\u003e\u003c\/p\u003e","brand":"AIRTEC Motorsport","offers":[{"title":"Default Title","offer_id":58351092859264,"sku":"ATRADBMW8","price":669.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/7557\/5573\/files\/ATRADBMW8_1.jpg?v=1782750909","url":"https:\/\/stringtheorygarage.com\/products\/airtec-motorsport-radiator-upgrade-for-bmw-e9x-m3","provider":"String Theory Garage","version":"1.0","type":"link"}