{"product_id":"bmw-e9x-m3-racing-transmission-cooler","title":"BMW E9X M3 Racing Transmission Cooler","description":"\u003ch3 data-start=\"170\" data-end=\"249\"\u003e\u003cstrong data-start=\"174\" data-end=\"247\"\u003eCSF High-Efficiency Transmission Cooler – E9X M3 (CSF Part #8042)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"250\" data-end=\"294\"\u003e\u003cstrong data-start=\"250\" data-end=\"294\"\u003eTransmission Heat Management, Dialed In.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"296\" data-end=\"668\"\u003eWhen it comes to track and high-performance driving, keeping your transmission temps in check is just as critical as engine or oil cooling. The CarBahn High-Efficiency Transmission Cooler, engineered in partnership with CSF, is a drop-in solution for E9X M3s that delivers up to \u003cstrong data-start=\"575\" data-end=\"609\"\u003e30% greater cooling efficiency\u003c\/strong\u003e over the factory unit—without requiring any modifications.\u003c\/p\u003e\n\u003cp data-start=\"670\" data-end=\"919\"\u003eBuilt with CSF’s advanced \u003cstrong data-start=\"696\" data-end=\"723\"\u003eAC condenser technology\u003c\/strong\u003e, this cooler features an all-aluminum, dual-pass design with upgraded internal microtubes that keep transmission fluid temperatures within optimal range, even under aggressive driving conditions.\u003c\/p\u003e\n\u003chr data-start=\"921\" data-end=\"924\"\u003e\n\u003ch3 data-start=\"926\" data-end=\"959\"\u003e\u003cstrong data-start=\"930\" data-end=\"959\"\u003eKey Performance Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"960\" data-end=\"1777\"\u003e\n\u003cli data-start=\"960\" data-end=\"1103\"\u003e\n\u003cp data-start=\"962\" data-end=\"1103\"\u003e\u003cstrong data-start=\"962\" data-end=\"997\"\u003eDual-Pass High-Performance Core\u003c\/strong\u003e – Coolant flows through the core twice, lowering outlet temps and improving fluid stability under load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1104\" data-end=\"1280\"\u003e\n\u003cp data-start=\"1106\" data-end=\"1280\"\u003e\u003cstrong data-start=\"1106\" data-end=\"1137\"\u003e11-Channel Microtube Design\u003c\/strong\u003e – Upgraded from the OEM’s 10-tube setup, this version features a \u003cstrong data-start=\"1203\" data-end=\"1216\"\u003e22mm-wide\u003c\/strong\u003e, single-row, high-pressure layout for enhanced heat exchange.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1281\" data-end=\"1383\"\u003e\n\u003cp data-start=\"1283\" data-end=\"1383\"\u003e\u003cstrong data-start=\"1283\" data-end=\"1313\"\u003e100% Aluminum Construction\u003c\/strong\u003e – Fully TIG-welded for maximum durability and corrosion resistance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1384\" data-end=\"1507\"\u003e\n\u003cp data-start=\"1386\" data-end=\"1507\"\u003e\u003cstrong data-start=\"1386\" data-end=\"1425\"\u003eLab-Tested ~30% Efficiency Increase\u003c\/strong\u003e – Keeps transmission temps under control when the factory cooler can’t keep up.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1508\" data-end=\"1640\"\u003e\n\u003cp data-start=\"1510\" data-end=\"1640\"\u003e\u003cstrong data-start=\"1510\" data-end=\"1545\"\u003eTrue Plug-and-Play Installation\u003c\/strong\u003e – Fully compatible with factory mounting points, oil-line connections, shrouds, and ducting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1641\" data-end=\"1777\"\u003e\n\u003cp data-start=\"1643\" data-end=\"1777\"\u003e\u003cstrong data-start=\"1643\" data-end=\"1682\"\u003eDesigned for Demanding Environments\u003c\/strong\u003e – Ideal for vehicles with upgraded power levels, track use, or heavy-duty performance driving.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1779\" data-end=\"1782\"\u003e\n\u003ch3 data-start=\"1784\" data-end=\"1806\"\u003e\u003cstrong data-start=\"1788\" data-end=\"1806\"\u003eWhy It Matters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1808\" data-end=\"2196\"\u003eThe factory E9X M3 transmission cooler simply wasn’t designed for the heat generated in motorsport or aggressive use. Rising temps can lead to delayed shifts, reduced clutch pack longevity, and overall drivability issues. Upgrading to this high-efficiency unit ensures that your DCT or automatic transmission operates within its safe thermal limits—protecting performance and reliability.\u003c\/p\u003e\n\u003chr data-start=\"2198\" data-end=\"2201\"\u003e\n\u003ch3 data-start=\"2203\" data-end=\"2233\"\u003e\u003cstrong data-start=\"2207\" data-end=\"2233\"\u003eCarBahn Recommendation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2235\" data-end=\"2506\"\u003eFor any E9X M3 seeing hard use—especially supercharged builds or cars running long stints on track—this transmission cooler is a \u003cstrong data-start=\"2364\" data-end=\"2377\"\u003emust-have\u003c\/strong\u003e reliability upgrade. Pair it with our oil and power steering cooling solutions for a fully integrated thermal management system.\u003c\/p\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":53314574647618,"sku":"CBB08-00-8042","price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0918\/3369\/6578\/files\/8042.webp?v=1778878235","url":"https:\/\/buypureflow.com\/products\/bmw-e9x-m3-racing-transmission-cooler","provider":"PureFlow Performance","version":"1.0","type":"link"}