{"product_id":"do88-bmw-s55-m3-m4-f80-f82-f83-side-mounted-radiator","title":"do88 BMW S55 M3\/M4 (F80\/F82\/F83) Side Mounted Radiator","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe S55 twin-turbo engine powering the M3 and M4 F8X uses a top-mounted water-cooled intercooler system rather than a conventional air-cooled intercooler. This charge cooling circuit runs on its own separate coolant loop, combining two parallel-connected radiators and a pump, the larger one positioned in front of the centre cooling module, and a second, smaller one located in front of the right-side wheel arch. Lowering the water temperature in this circuit translates directly to lower charge air temperatures, making high-performance radiators genuinely important for maintaining low, stable IATs during hard driving.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis side-mounted radiator addresses the smaller wheel-arch unit specifically. do88 extended both the core height and thickness by 28mm, delivering an \u003cstrong\u003e18% larger frontal area\u003c\/strong\u003e and a substantial \u003cstrong\u003e100% larger core volume\u003c\/strong\u003e over the factory unit. To fit this genuinely larger radiator into the available space, do88 designed a purpose-built carbon fibre air duct, manufactured from prepreg material in an autoclave process for genuine strength and precision. Real-world testing, measured during full-throttle 0-240km\/h acceleration runs at an airstrip under identical same-day conditions, confirmed a \u003cstrong\u003e5°C reduction in post-intercooler air temperature\u003c\/strong\u003e (34°C versus 39°C stock) with this radiator fitted.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWorks with:\u003c\/strong\u003e OEM cooling lines, genuine drop-in installation. Best paired with do88's Front-Mounted Intercooler Radiator (75% larger core, sold separately) for the complete charge cooling upgrade across both parallel radiators.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This Radiator\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100% larger core volume and 18% larger frontal area than the factory unit\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eReal-world tested 5°C reduction in post-intercooler air temperature\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePurpose-built prepreg carbon fibre air ducting, autoclave manufactured\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHigh-efficiency core with 8mm multi-louvered fins and multi-channel core tubes\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGenuine drop-in installation using OEM cooling lines\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBenefits both stock and heavily modified builds, on track, street, or strip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F80 M3\/M3 Competition (2015-2018, S55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F82\/F83 M4\/M4 Competition\/GTS\/CS (2015-2020, S55)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"do88","offers":[{"title":"Default Title","offer_id":54462619746637,"sku":"WC-360","price":796.97,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/do88_BMW_S55_M3_M4_F80_F82_F83_Side_Mounted_Radiator.webp?v=1786092880","url":"https:\/\/i6tuning.com\/products\/do88-bmw-s55-m3-m4-f80-f82-f83-side-mounted-radiator","provider":"i6 Tuning","version":"1.0","type":"link"}