{"product_id":"csf-high-performance-auxiliary-radiator-bmw-f8x-m3-m4-m2-part-8258","title":"CSF High-Performance Auxiliary Radiator – BMW M2 \/ M3 \/ M4 (F8x) #8258","description":"\u003cstyle\u003e.sl-desc h2{font-size:1.15em;letter-spacing:.06em;text-transform:uppercase;border-bottom:2px solid #111;padding-bottom:6px;margin:1.6em 0 .7em}.sl-desc h3{font-size:1em;margin:1.2em 0 .4em}.sl-desc ul{margin:0 0 1em 1.2em}.sl-desc li{margin:.25em 0}.va-table{width:100%;border-collapse:collapse;margin:.5em 0 1em;font-size:.95em}.va-table th{text-align:left;padding:10px 8px;border-bottom:2px solid #333;white-space:nowrap}.va-table td{padding:8px;border-bottom:1px solid #e5e5e5;vertical-align:top}.sl-note{font-size:.9em;color:#555;margin:.4em 0 1em}\u003c\/style\u003e\u003cdiv class=\"sl-desc\"\u003e\n\u003ch2\u003eOVERVIEW\u003c\/h2\u003e\n\u003cp\u003eThe CSF #8258 High-Performance Auxiliary Radiator is a substantial upgrade over the OEM auxiliary radiator on the F8X-chassis M2 Competition\/CS, M3 and M4. TIG-welded aluminum tanks replace the factory plastic tanks for greater strength and fluid capacity, and the core steps up from the OEM single-row design to a 2-row, 42mm high-performance core built on CSF's exclusive B-Tube technology, with ultra-efficient multi-louvered fins for maximum surface area contact and heat rejection.\u003c\/p\u003e\n\u003cp\u003eConstruction is 100% aluminum throughout for performance and long-term durability. The unit is multi-fit — the same radiator works on both the left and right side of the car — and includes a detachable bolt-on rock guard to protect the core from road debris. Every unit is individually leak and pressure tested. A satin black finish keeps a clean OEM+ appearance behind the grilles.\u003c\/p\u003e\n\u003cp\u003eThis is a true drop-in fit using the OEM-style quick-connect inlet and outlet fittings and factory mounting points, requiring no modification to install.\u003c\/p\u003e\n\u003ch2\u003eSPECS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2-row, 42mm high-performance core featuring CSF's exclusive B-Tube technology\u003c\/li\u003e\n\u003cli\u003eUltra-efficient multi-louvered fins for maximum surface area contact and heat dissipation\u003c\/li\u003e\n\u003cli\u003eIncreased tank volume and core size over OEM\u003c\/li\u003e\n\u003cli\u003e100% all-aluminum TIG-welded construction\u003c\/li\u003e\n\u003cli\u003eOEM-style \"quick connect\" inlet and outlet\u003c\/li\u003e\n\u003cli\u003eMulti-fit — fits both left and right side\u003c\/li\u003e\n\u003cli\u003eIncludes detachable bolt-on rock guard\u003c\/li\u003e\n\u003cli\u003eIndividually leak and pressure tested\u003c\/li\u003e\n\u003cli\u003eTrue drop-in fit — requires no modifications to install\u003c\/li\u003e\n\u003cli\u003eSatin black finish\u003c\/li\u003e\n\u003cli\u003eReplaces OEM part numbers 17-11-2-284-603 and 17-11-2-284-604\u003c\/li\u003e\n\u003cli\u003e2-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePARTS INCLUDED\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOne (1) CSF #8258 high-performance auxiliary radiator\u003c\/li\u003e\n\u003cli\u003eDetachable bolt-on rock guard\u003c\/li\u003e\n\u003cli\u003eComplete kit as supplied by CSF Radiators; see the installation instructions supplied in the box for the full bill of materials.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECH RESOURCES\u003c\/h2\u003e\n\u003ch3\u003eAdditional Parts Required\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA second CSF #8258.\u003c\/strong\u003e The radiator is sold individually and every application requires two — order quantity 2 for a complete installation.\u003c\/li\u003e\n\u003cli\u003eCoolant for refilling and bleeding the cooling system after installation (installer supplied).\u003c\/li\u003e\n\u003cli\u003eNo other additional hardware is required. CSF specifies a true drop-in fit using the OEM quick-connect lines and mounting locations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCSF does not publish a downloadable installation PDF for this part. Printed installation instructions are supplied in the box.\u003c\/li\u003e\n\u003cli\u003eInstallation requires no modification to the vehicle; the radiator is multi-fit and mounts on either side using the supplied mounting hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSold individually — all applications require two auxiliary radiators.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eYear ranges and trims follow CSF's current published application table for #8258. This part was split out from a multi-SKU draft listing that bundled it with CSF #8179, #8321 and #8355 under one product with variants; those three part numbers already have their own individual Speed Logic listings, so this SKU has been given its own listing to match.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePART NUMBER\u003c\/h2\u003e\n\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003e8258\u003c\/strong\u003e — CSF BMW F8X M3\/M4\/M2 Comp High-Performance Auxiliary Radiator (satin black)\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch2\u003eVEHICLE APPLICATIONS\u003c\/h2\u003e\n\u003ctable class=\"va-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eChassis\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2 Competition\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2019–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM2 CS\u003c\/td\u003e\n\u003ctd\u003eF87\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2020–2021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003ctd\u003eF80\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2018\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 (incl. CS, GTS)\u003c\/td\u003e\n\u003ctd\u003eF82\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM4 Convertible\u003c\/td\u003e\n\u003ctd\u003eF83\u003c\/td\u003e\n\u003ctd\u003eS55 3.0L Twin-Turbo I6\u003c\/td\u003e\n\u003ctd\u003e2015–2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"CSF Radiators","offers":[{"title":"Default Title","offer_id":52594824315160,"sku":"8258","price":469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2307\/8117\/files\/8258_1_d43c1928-fc82-4da7-b07f-34e9cbd52325.jpg?v=1788210134","url":"https:\/\/speedlogicauto.com\/products\/csf-high-performance-auxiliary-radiator-bmw-f8x-m3-m4-m2-part-8258","provider":"SPEED LOGIC","version":"1.0","type":"link"}