{"product_id":"f87-m2-n55-f3x-340i-440i-f2x-m240i-high-performance-auxiliary-radiator","title":"F87 M2 (N55) \/ F3X 340i\/440i \/ F2X M240i High-Performance Auxiliary Radiator","description":"\u003cp\u003e\u003cb\u003e\u003ca\u003eClick Here for the Full Press Release \u0026amp; Additional Product Details\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eAn industry-leading reputation and overwhelming success with BMW cooling has made CSF the #1 cooling choice for the F87 M2 (N55), F3X 340i440i, and F2X M240iM140i.\u003c\/p\u003e\u003cp\u003eThe new CSF Auxiliary Radiators are a great addition to the popular F87 (N55) \u0026amp; F3XF2X Cooling Suites. Like the other cooling systems on these BMWs, the aux rads do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners keep pushing the limits of their M2s and Gen 1 B58s, CSF is here to keep them cool.\u003c\/p\u003eProduct Details\u003ch3\u003eDesign \u0026amp; Engineering\u003c\/h3\u003e \u003cp\u003eCSF designed the coolers to be a true \"Drop-in Fit\" for easy installation fitting both left and right sides. Each cooler mounts in the factory location and uses the OEM quick connections. The High-Performance Auxiliary Radiators work in conjunction with the rest of the cooling system to reduce temperatures. They not only help keep temperatures in optimal ranges, but prolong the heat soak threshold. There's nothing worse than having your track session cut short because you need to do a cooldown lap.\u003c\/p\u003e\u003ch4\u003eOEM vs CSF\u003c\/h4\u003e \u003cp\u003eCompared to the OEM coolers, the CSF units are a significant upgrade. The TIG welded aluminum tanks are much larger than the OE plastic tanks offering superior strength and fluid volume. A larger 2-row 42mm core increases cooling efficiency and capacity. This high efficiency core uses CSF's Exclusive B-Tube Technology and latest 5mm fin technology, maximizing airflow and heat dissipation. These 5mm fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eFeature\u003c\/th\u003e \u003cth\u003eCSF\u003c\/th\u003e \u003cth\u003eOEM\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003e\u003cem\u003eCore Thickness\u003c\/em\u003e\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e42mm\u003c\/td\u003e \u003ctd\u003e27.5mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003e\u003cem\u003eCore Rows\u003c\/em\u003e\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2-Row\u003c\/td\u003e \u003ctd\u003e1-Row\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003e\u003cem\u003eFin Height\u003c\/em\u003e\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5mm\u003c\/td\u003e \u003ctd\u003e5mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cem\u003e\u003cstrong\u003eTank Material\u003c\/strong\u003e\u003c\/em\u003e\u003c\/td\u003e \u003ctd\u003eAll-Aluminum\u003c\/td\u003e \u003ctd\u003ePlastic\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cem\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/em\u003e\u003c\/td\u003e \u003ctd\u003e100% TIG-Welded\u003c\/td\u003e \u003ctd\u003eCrimp on Gasket\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003eWith many motorsports teams and race enthusiasts now pushing over 700 horsepower, the B58 is seeing coolant temperatures well above normal. Once temperatures pass a safe limit the B58 will go into limp mode. Needless to say this can ruin a race, track session, or your overall driving fun in general. CSF is here to keep your B58 running at peak performance.\u003c\/p\u003e\u003ch4\u003eConstruction\u003c\/h4\u003e \u003cp\u003e100% All-Aluminum construction ensures the best performance and durability. The integrated mounting frame is much stronger and more durable than the OE plastic pod mounting system. In addition, the black finish provides extra protection and corrosion resistance.\u003c\/p\u003e \u003cp\u003eCSF auxiliary radiators offer even more durability with the integrated bolt on rock guards to keep the coolers safe. You've no doubt heard horror stories about OEM coolers getting punctured and spilling fluids all over the road or track. Now you can feel more confident that your cooling system is safer from road debris.\u003c\/p\u003e\u003ch4\u003eF87 M2 N55 Cooling System\u003c\/h4\u003e \u003cp\u003eThe F87 M2 Competition uses the same cooling system as the F8X M3 and M4, the N55 version has a completely different setup. The diagram below shows how the system is laid out.\u003c\/p\u003e \u003cp\u003eThe Auxiliary Radiator completes the \u003ca\u003eF87 M2 Cooling Suite\u003c\/a\u003e offered by CSF.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eDiagram #\u003c\/th\u003e \u003cth\u003eBMW OE Part Number\u003c\/th\u003e \u003cth\u003eCSF Part Number\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e1\u003c\/td\u003e \u003ctd\u003eBMW 17-51-7-600-531\u003cbr\u003eFront Mount Intercooler\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #81158115B\u003c\/a\u003e\u003cbr\u003eHigh-Performance Step-Core Intercooler\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e2\u003c\/td\u003e \u003ctd\u003eBMW 17-21-2-409-076\u003cbr\u003eTransmission Oil Cooler\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #8103\u003c\/a\u003e\u003cbr\u003eRace-Spec Dual-Pass DTC Transmission Cooler\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e3\u003c\/td\u003e \u003ctd\u003eBMW 17-21-7-618-360\u003cbr\u003eEngine Oil Cooler (Right Hand Side)\u003c\/td\u003e \u003ctd\u003e\n\u003ca\u003eCSF #8104\u003c\/a\u003e\u003cbr\u003eRace-Spec Oil Cooler\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e5\u003c\/td\u003e \u003ctd\u003eBMW 17-11-8-625-447\u003cbr\u003eAuxiliary Radiator (Left Hand Side)\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003eCSF #8355\u003cbr\u003eHigh Performance Auxiliary Radiator\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e6\u003c\/td\u003e \u003ctd\u003eBMW 17-11-8-672-103\u003cbr\u003eRadiator\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #7078\u003c\/a\u003e\u003cbr\u003eHigh Performance All-Aluminum Radiator\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e\u003ch4\u003eGen 1 B58 Cooling System\u003c\/h4\u003e \u003cp\u003eThe Gen 1 B58 cooling system is decently complex. Diagrams have been included to show the details of how the whole system flows.\u003c\/p\u003e \u003cp\u003eThe Auxiliary Radiator completes the \u003ca\u003eGen 1 B58 Cooling Suite\u003c\/a\u003e offered by CSF.\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003eDiagram #\u003c\/th\u003e \u003cth\u003eBMW OE Part Number\u003c\/th\u003e \u003cth\u003eCSF Part Number\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eA\u003c\/td\u003e \u003ctd\u003eBMW 17-11-8-741-830\u003cbr\u003eFront Mount Heat Exchanger - Charge Air Cooling System\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #81318131B\u003c\/a\u003e\u003cbr\u003eHigh-Performance Front Mount Heat Exchanger\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eB\u003c\/td\u003e \u003ctd\u003eBMW 17-11-8-482-623\u003cbr\u003eRadiator - Engine Cooling System\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #7089\u003c\/a\u003e\u003cbr\u003eHigh Performance Radiator\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eC\u003c\/td\u003e \u003ctd\u003eBMW 17-11-8-625-447\u003cbr\u003eAuxiliary Radiator (LeftRight Side) - Engine Cooling System\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003eCSF #8355\u003cbr\u003eHigh Performance Auxiliary Radiator\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eD\u003c\/td\u003e \u003ctd\u003eBMW 11-61-8-603-913\u003cbr\u003eCharge Air Cooler - Charge Air Cooling System\u003c\/td\u003e \u003ctd\u003e \u003cdiv\u003e \u003cdiv\u003e\n\u003ca\u003eCSF #83008300B8300C\u003c\/a\u003e\u003cbr\u003eCharge-Air-Cooler Manifold\u003c\/div\u003e \u003c\/div\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e\u003chr\u003e\u003ch3\u003eInstalled Images\u003c\/h3\u003e \u003chr\u003e\u003ch3\u003e Fitment Notes\u003c\/h3\u003e\u003ch4\u003eF3X 340i440i and F2X M240i\u003c\/h4\u003e \u003cp\u003eSome F3X 340i440i and F2X M240iM140i trim levels did not come equipped with any Auxiliary Radiators. Be sure to check your VIN to see how many coolers your BMW came with before ordering.\u003c\/p\u003e \u003cp\u003eThere were three different Auxiliary Radiators available for the F3X 340i440i and M240iM140i. The CSF #8355 is made to be a drop-in fit replacement for the BMW 17-11-8-625-447. It can also replace the BMW 17-11-7-628-057 \u0026amp; 17-11-7-600-697 with the correct mounting bracket(s). Vehicles that did \u003cstrong\u003enot\u003c\/strong\u003e come equipped with the BMW 17-11-8-625-447 from the factory may require minor trimming to the air ducting to fit correctly. Models equipped with the M Sport Package \u0026amp; M Sport Brakes should use the 17-11-8-625-447, however you should verify using your VIN with a dealership.\u003c\/p\u003e \u003cp\u003eThe Upper Brackets are the same for all 3 versions of the Auxiliary Radiators. The lower bracket part numbers are listed below. Please note, the frames (cradles) are not required as the CSF #8355 incorporates the frame (BMW 17-21-8-625-445) into the cooler design.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eLower Brackets for the 17-11-8-625-447\u003c\/strong\u003e\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cstrong\u003ePart Name\u003c\/strong\u003e\u003c\/th\u003e \u003cth\u003eBMW Part Number\u003c\/th\u003e \u003cth\u003eQty.\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eBracket, aux. radiator, lower left\u003c\/td\u003e \u003ctd\u003e51-74-7-389-931\u003c\/td\u003e \u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBracket, aux. radiator, lower right\u003c\/td\u003e \u003ctd\u003e51-74-7-389-932\u003c\/td\u003e \u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e\u003ch4\u003eF87 M2 (N55)\u003c\/h4\u003e \u003cp\u003eDoes NOT fit the F87 M2 Competition which uses the S55 Auxiliary Radiators (\u003ca\u003eCSF #8258\u003c\/a\u003e). The F87 M2 with the N55 uses a Single CSF #8355 Auxiliary radiator mounted on the Left Hand Side. The Right Hand Side uses the \u003ca\u003eCSF #8104 Race-Spec Engine Oil Cooler\u003c\/a\u003e.\u003c\/p\u003eFeatures\u003cul\u003e\n\u003cli\u003eSold Individually - most applications use 2 auxiliary radiators\u003c\/li\u003e\n\u003cli\u003eMulti-Fit - Fits Both Left \u0026amp; Right Side\u003c\/li\u003e\n\u003cli\u003e2-Row - 42mm High-Performance Core Featuring CSF's Exclusive B-tube Technology\u003c\/li\u003e\n\u003cli\u003eNew 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact\u003c\/li\u003e\n\u003cli\u003eTank Volume and Core Size Increased\u003c\/li\u003e\n\u003cli\u003e100% All-Aluminum TIG-Welded Construction\u003c\/li\u003e\n\u003cli\u003eOEM Style \"Quick Connect\" InletOutlet\u003c\/li\u003e\n\u003cli\u003eTrue \"Drop-in Fit\" Requires No Modifications to Install\u003c\/li\u003e\n\u003cli\u003eIncludes Detachable Rock Guard\u003c\/li\u003e\n\u003cli\u003eIndividually Leak and Pressure Tested\u003c\/li\u003e\n\u003cli\u003eHigh-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement\u003c\/li\u003e\n\u003cli\u003eSatin Black Finish for OEM+ Look\u003c\/li\u003e\n\u003cli\u003e2 Year Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003eApplications\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eChassis Code\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003cth\u003eEngine Trans Etc\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2018\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eM2\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eOnly Requires 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2018\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e340i\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2016-2018\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e340i xDrive\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2019\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e340i GT xDrive\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e440i\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e440i xDrive\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e440i Gran Coupe\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e440i xDrive Gran Coupe\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e430i\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 2.0L L4\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e430i xDrive\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 2.0L L4\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e430i Gran Coupe\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 2.0L L4\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2020\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF3X\u003c\/td\u003e\n\u003ctd\u003e430i xDrive Gran Coupe\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 2.0L L4\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF2X\u003c\/td\u003e\n\u003ctd\u003eM240i\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2017-2021\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eF2X\u003c\/td\u003e\n\u003ctd\u003eM240i xDrive\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 3.0L L6\u003c\/td\u003e\n\u003ctd\u003eBMW 17-11-8-625-447 Only - See Fitment Notes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003e Fitment Notes\u003c\/h3\u003e\u003ch4\u003eF3X 340i440i and F2X M240i\u003c\/h4\u003e \u003cp\u003eSome F3X 340i440i and F2X M240iM140i trim levels did not come equipped with any Auxiliary Radiators. Be sure to check your VIN to see how many coolers your BMW came with before ordering.\u003c\/p\u003e \u003cp\u003eThere were three different Auxiliary Radiators available for the F3X 340i440i and M240iM140i. The CSF #8355 is made to be a drop-in fit replacement for the BMW 17-11-8-625-447. It can also replace the BMW 17-11-7-628-057 \u0026amp; 17-11-7-600-697 with the correct mounting bracket(s). Vehicles that did \u003cstrong\u003enot\u003c\/strong\u003e come equipped with the BMW 17-11-8-625-447 from the factory may require minor trimming to the air ducting to fit correctly. Models equipped with the M Sport Package \u0026amp; M Sport Brakes should use the 17-11-8-625-447, however you should verify using your VIN with a dealership.\u003c\/p\u003e \u003cp\u003eThe Upper Brackets are the same for all 3 versions of the Auxiliary Radiators. The lower bracket part numbers are listed below. Please note, the frames (cradles) are not required as the CSF #8355 incorporates the frame (BMW 17-21-8-625-445) into the cooler design.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eLower Brackets for the 17-11-8-625-447\u003c\/strong\u003e\u003c\/p\u003e \u003ctable\u003e \u003cthead\u003e \u003ctr\u003e \u003cth\u003e\u003cstrong\u003ePart Name\u003c\/strong\u003e\u003c\/th\u003e \u003cth\u003eBMW Part Number\u003c\/th\u003e \u003cth\u003eQty.\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eBracket, aux. radiator, lower left\u003c\/td\u003e \u003ctd\u003e51-74-7-389-931\u003c\/td\u003e \u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eBracket, aux. radiator, lower right\u003c\/td\u003e \u003ctd\u003e51-74-7-389-932\u003c\/td\u003e \u003ctd\u003e1\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e\u003ch4\u003eF87 M2 (N55)\u003c\/h4\u003e \u003cp\u003eDoes NOT fit the F87 M2 Competition which uses the S55 Auxiliary Radiators (\u003ca\u003eCSF #8258\u003c\/a\u003e). The F87 M2 with the N55 uses a Single CSF #8355 Auxiliary radiator mounted on the Left Hand Side. The Right Hand Side uses the \u003ca\u003eCSF #8104 Race-Spec Engine Oil Cooler\u003c\/a\u003e.\u003c\/p\u003eOEM Part Numbers\u003cul\u003e\n\u003cli\u003eBMW 17-11-8-625-447\u003c\/li\u003e\n\u003cli\u003eBMW 17 11 8 625 447\u003c\/li\u003e\n\u003cli\u003eBMW 17118625447\u003c\/li\u003e\n\u003cli\u003eBMW 17-21-8-625-445\u003c\/li\u003e\n\u003cli\u003eBMW 17 21 8 625 445\u003c\/li\u003e\n\u003cli\u003eBMW 17218625445\u003c\/li\u003e\n\u003c\/ul\u003eWarranty\u003cp\u003eCooling Systems and Flexibles, Inc. (CSF) warrants CSFs High-Performance Cooling Systems, under normal use and service, to the original purchaser of the vehicle in which the product was originally installed. For more information and details please visit our \u003cb\u003e\u003ca\u003eWarranty Page\u003c\/a\u003e\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eSKU# 8355 Warranty Term 2 years\u003c\/p\u003e\u003cbr\u003eClick Here for the Full Press Release \u0026amp; Additional Product DetailsAn industry-leading reputation and overwhelming success with BMW cooling has made CSF the #1 cooling choice for the F87 M2 (N55), F3X 340i440i, and F2X M240iM140i.The new CSF Auxiliary Radiators are a great addition to the popular F87 (N55) \u0026amp; F3XF2X Cooling Suites. Like the other cooling systems on these BMWs, the aux rads do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners keep pushing the limits of their M2s and Gen 1 B58s, CSF is here to keep them cool.Product DetailsDesign \u0026amp; Engineering CSF designed the coolers to be a true \"Drop-in Fit\" for easy installation fitting both left and right sides. Each cooler mounts in the factory location and uses the OEM quick connections. The High-Performance Auxiliary Radiators work in conjunction with the rest of the cooling system to reduce temperatures. They not only help keep temperatures in optimal ranges, but prolong the heat soak threshold. There's nothing worse than having your track session cut short because you need to do a cooldown lap.OEM vs CSF Compared to the OEM coolers, the CSF units are a significant upgrade. The TIG welded aluminum tanks are much larger than the OE plastic tanks offering superior strength and fluid volume. A larger 2-row 42mm core increases cooling efficiency and capacity. This high efficiency core uses CSF's Exclusive B-Tube Technology and latest 5mm fin technology, maximizing airflow and heat dissipation. These 5mm fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow. Feature CSF OEM Core Thickness 42mm 27.5mm Core Rows 2-Row 1-Row Fin Height 5mm 5mm Tank Material All-Aluminum Plastic Construction 100% TIG-Welded Crimp on Gasket With many motorsports teams and race enthusiasts now pushing over 700 horsepower, the B58 is seeing coolant temperatures well above normal. Once temperatures pass a safe limit the B58 will go into limp mode. Needless to say this can ruin a race, track session, or your overall driving fun in general. CSF is here to keep your B58 running at peak performance.Construction 100% All-Aluminum construction ensures the best performance and durability. The integrated mounting frame is much stronger and more durable than the OE plastic pod mounting system. In addition, the black finish provides extra protection and corrosion resistance. CSF auxiliary radiators offer even more durability with the integrated bolt on rock guards to keep the coolers safe. You've no doubt heard horror stories about OEM coolers getting punctured and spilling fluids all over the road or track. Now you can feel more confident that your cooling system is safer from road debris.F87 M2 N55 Cooling System The F87 M2 Competition uses the same cooling system as the F8X M3 and M4, the N55 version has a completely different setup. The diagram below shows how the system is laid out. The Auxiliary Radiator completes the F87 M2 Cooling Suite offered by CSF. Diagram # BMW OE Part Number CSF Part Number 1 BMW 17-51-7-600-531Front Mount Intercooler CSF #81158115BHigh-Performance Step-Core Intercooler 2 BMW 17-21-2-409-076Transmission Oil Cooler CSF #8103Race-Spec Dual-Pass DTC Transmission Cooler 3 BMW 17-21-7-618-360Engine Oil Cooler (Right Hand Side) CSF #8104Race-Spec Oil Cooler 5 BMW 17-11-8-625-447Auxiliary Radiator (Left Hand Side) CSF #8355High Performance Auxiliary Radiator 6 BMW 17-11-8-672-103Radiator CSF #7078High Performance All-Aluminum Radiator Gen 1 B58 Cooling System The Gen 1 B58 cooling system is decently complex. Diagrams have been included to show the details of how the whole system flows. The Auxiliary Radiator completes the Gen 1 B58 Cooling Suite offered by CSF. Diagram # BMW OE Part Number CSF Part Number A BMW 17-11-8-741-830Front Mount Heat Exchanger - Charge Air Cooling System CSF #81318131BHigh-Performance Front Mount Heat Exchanger B BMW 17-11-8-482-623Radiator - Engine Cooling System CSF #7089High Performance Radiator C BMW 17-11-8-625-447Auxiliary Radiator (LeftRight Side) - Engine Cooling System CSF #8355High Performance Auxiliary Radiator D BMW 11-61-8-603-913Charge Air Cooler - Charge Air Cooling System CSF #83008300B8300CCharge-Air-Cooler Manifold Installed Images Fitment NotesF3X 340i440i and F2X M240i Some F3X 340i440i and F2X M240iM140i trim levels did not come equipped with any Auxiliary Radiators. Be sure to check your VIN to see how many coolers your BMW came with before ordering. There were three different Auxiliary Radiators available for the F3X 340i440i and M240iM140i. The CSF #8355 is made to be a drop-in fit replacement for the BMW 17-11-8-625-447. It can also replace the BMW 17-11-7-628-057 \u0026amp; 17-11-7-600-697 with the correct mounting bracket(s). Vehicles that did not come equipped with the BMW 17-11-8-625-447 from the factory may require minor trimming to the air ducting to fit correctly. Models equipped with the M Sport Package \u0026amp; M Sport Brakes should use the 17-11-8-625-447, however you should verify using your VIN with a dealership. The Upper Brackets are the same for all 3 versions of the Auxiliary Radiators. The lower bracket part numbers are listed below. Please note, the frames (cradles) are not required as the CSF #8355 incorporates the frame (BMW 17-21-8-625-445) into the cooler design. Lower Brackets for the 17-11-8-625-447 Part Name BMW Part Number Qty. Bracket, aux. radiator, lower left 51-74-7-389-931 1 Bracket, aux. radiator, lower right 51-74-7-389-932 1 F87 M2 (N55) Does NOT fit the F87 M2 Competition which uses the S55 Auxiliary Radiators (CSF #8258). The F87 M2 with the N55 uses a Single CSF #8355 Auxiliary radiator mounted on the Left Hand Side. The Right Hand Side uses the CSF #8104 Race-Spec Engine Oil Cooler.FeaturesSold Individually - most applications use 2 auxiliary radiatorsMulti-Fit - Fits Both Left \u0026amp; Right Side2-Row - 42mm High-Performance Core Featuring CSF's Exclusive B-tube TechnologyNew 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area ContactTank Volume and Core Size Increased100% All-Aluminum TIG-Welded ConstructionOEM Style \"Quick Connect\" InletOutletTrue \"Drop-in Fit\" Requires No Modifications to InstallIncludes Detachable Rock GuardIndividually Leak and Pressure TestedHigh-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM ReplacementSatin Black Finish for OEM+ Look2 Year Limited WarrantyApplicationsYear RangeMakeChassis CodeModelTrimEngine Trans EtcNotes2016-2018BMWF87M2-Turbocharged 3.0L L6Only Requires 12016-2018BMWF3X340i-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2016-2018BMWF3X340i xDrive-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2019BMWF3X340i GT xDrive-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X440i-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X440i xDrive-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X440i Gran Coupe-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X440i xDrive Gran Coupe-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X430i-Turbocharged 2.0L L4BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X430i xDrive-Turbocharged 2.0L L4BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X430i Gran Coupe-Turbocharged 2.0L L4BMW 17-11-8-625-447 Only - See Fitment Notes2017-2020BMWF3X430i xDrive Gran Coupe-Turbocharged 2.0L L4BMW 17-11-8-625-447 Only - See Fitment Notes2017-2021BMWF2XM240i-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes2017-2021BMWF2XM240i xDrive-Turbocharged 3.0L L6BMW 17-11-8-625-447 Only - See Fitment Notes Fitment NotesF3X 340i440i and F2X M240i Some F3X 340i440i and F2X M240iM140i trim levels did not come equipped with any Auxiliary Radiators. Be sure to check your VIN to see how many coolers your BMW came with before ordering. There were three different Auxiliary Radiators available for the F3X 340i440i and M240iM140i. The CSF #8355 is made to be a drop-in fit replacement for the BMW 17-11-8-625-447. It can also replace the BMW 17-11-7-628-057 \u0026amp; 17-11-7-600-697 with the correct mounting bracket(s). Vehicles that did not come equipped with the BMW 17-11-8-625-447 from the factory may require minor trimming to the air ducting to fit correctly. Models equipped with the M Sport Package \u0026amp; M Sport Brakes should use the 17-11-8-625-447, however you should verify using your VIN with a dealership. The Upper Brackets are the same for all 3 versions of the Auxiliary Radiators. The lower bracket part numbers are listed below. Please note, the frames (cradles) are not required as the CSF #8355 incorporates the frame (BMW 17-21-8-625-445) into the cooler design. Lower Brackets for the 17-11-8-625-447 Part Name BMW Part Number Qty. Bracket, aux. radiator, lower left 51-74-7-389-931 1 Bracket, aux. radiator, lower right 51-74-7-389-932 1 F87 M2 (N55) Does NOT fit the F87 M2 Competition which uses the S55 Auxiliary Radiators (CSF #8258). The F87 M2 with the N55 uses a Single CSF #8355 Auxiliary radiator mounted on the Left Hand Side. The Right Hand Side uses the CSF #8104 Race-Spec Engine Oil Cooler.OEM Part NumbersBMW 17-11-8-625-447BMW 17 11 8 625 447BMW 17118625447BMW 17-21-8-625-445BMW 17 21 8 625 445BMW 17218625445WarrantyCooling Systems and Flexibles, Inc. (CSF) warrants CSFs High-Performance Cooling Systems, under normal use and service, to the original purchaser of the vehicle in which the product was originally installed. For more information and details please visit our Warranty PageSKU# 8355 Warranty Term 2 yearsThe new CSF Auxiliary Radiators are a great addition to the popular F87 (N55) \u0026amp; F3XF2X Cooling Suites. As more and more owners keep pushing the limits of their M2s and Gen 1 B58s, CSF is here to keep them cool.The new CSF Auxiliary Radiators are a great addition to the popular F87 (N55) \u0026amp; F3XF2X Cooling Suites. As more and more owners keep pushing the limits of their M2s and Gen 1 B58s, CSF is here to keep them cool.","brand":"CSF","offers":[{"title":"Default Title","offer_id":44421376409693,"sku":"8355","price":389.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/3184\/1629\/files\/8355_0_95480841-bb7b-40c3-9920-1e7a947d04dc.jpg?v=1777948434","url":"https:\/\/aeroflexperformance.com\/products\/f87-m2-n55-f3x-340i-440i-f2x-m240i-high-performance-auxiliary-radiator","provider":"AeroFlex Performance","version":"1.0","type":"link"}