{"product_id":"csf-1993-2001-mercedes-benz-r129-sl600-sl-70-sl-72-sl-73-oem-performance-all-aluminum-radiator","title":"CSF 1993-2001 Mercedes-Benz R129 SL600 \/ SL 70 \/ SL 72 \/ SL 73 OEM+ \/ Performance All-Aluminum Radiator","description":"\u003cp\u003eThe R129 SL600 and its AMG and RENNTech derivatives are among the most complex cars Mercedes-Benz built in the 1990s, and the V12 in the nose asks a great deal of the cooling system. Three decades on, the factory radiator is usually the part that gives up first — and replacing it has become a genuine problem.\u003c\/p\u003e\n\u003cp\u003eThe OE unit, Mercedes-Benz part number 129-500-10-03, uses an aluminum core crimped onto plastic end tanks. The plastic tanks and hose fittings start to break down after a few years, and the bond between the core and the tanks generally won't last more than 10-12 years of regular use. The 90° overflow pipe is also plastic on the original, and is known to crack — which means replacing the entire radiator. Original factory components are now either extremely hard to find or no longer available at all.\u003c\/p\u003e\n\u003cp\u003eCSF developed this radiator together with RENNTech, the premier Mercedes-Benz specialist in North America, who restore and build these cars in house for clients around the world. The result is a 100% all-aluminum, TIG-welded replacement that removes the plastic tanks from the equation entirely.\u003c\/p\u003e\n\u003cp\u003eThe 2-row, 42mm core keeps the same 55 cooling tubes and 56 fin rows as the OE unit, so nothing about the installation changes — but the internals are reworked. CSF's Exclusive B-Tube Technology delivers a 15-20% increase in heat transfer efficiency over regular oval welded tubes, and the 6.5mm multi-louvered fins are taller than the OEM's 6mm for greater surface area contact. The 5-plate transmission oil cooler is built into the left-hand side tank, as on the original.\u003c\/p\u003e\n\u003cp\u003eIt drops straight in using the factory mounting points, fan and shroud, with CNC-machined mounting brackets and OEM-style inlet and outlet connections, and requires no modifications. Every unit is individually leak and pressure tested and carries a 2-year limited warranty.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e2-Row, 42mm ultra-high-performance core with 55 cooling tubes and 56 fin rows\u003c\/li\u003e\n\u003cli\u003e15-20% increase in heat transfer efficiency using CSF's Exclusive B-Tube Technology\u003c\/li\u003e\n\u003cli\u003e6.5mm ultra-efficient fins with a multi-louvered design for maximum surface area contact\u003c\/li\u003e\n\u003cli\u003eIntegrated 5-plate transmission oil cooler in the left-hand side tank\u003c\/li\u003e\n\u003cli\u003eCNC-machined mounting brackets and OEM-style inlet\/outlet connections\u003c\/li\u003e\n\u003cli\u003e100% all-aluminum TIG-welded construction — no plastic end tanks\u003c\/li\u003e\n\u003cli\u003eSatin black and silver finish for an OE look\u003c\/li\u003e\n\u003cli\u003eTrue plug-and-play \"drop-in fit\" installation requires absolutely no modifications\u003c\/li\u003e\n\u003cli\u003eIndividually leak and pressure tested\u003c\/li\u003e\n\u003cli\u003e2-year limited warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a direct replacement for the factory radiator?\u003c\/strong\u003e\u003cbr\u003eYes. It is a true plug-and-play drop-in fit using the factory mounting points, fan and shroud, with no modifications required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include the transmission oil cooler?\u003c\/strong\u003e\u003cbr\u003eYes. A 5-plate transmission oil cooler is integrated into the left-hand side tank, in the same way as the original radiator.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the factory Mercedes-Benz radiator fail?\u003c\/strong\u003e\u003cbr\u003eThe OE radiator crimps an aluminum core onto plastic end tanks. The plastic tanks and hose fittings degrade over time, the core-to-tank bond rarely lasts beyond 10-12 years, and the plastic 90° overflow pipe is prone to cracking — at which point the whole radiator needs replacing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the core larger than the OEM radiator?\u003c\/strong\u003e\u003cbr\u003eNo. It deliberately retains the same tube and fin row count as the OE unit so it fits exactly like the original. The gains come from the B-Tube internal design and the taller 6.5mm multi-louvered fins, not from extra core volume.\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 1em;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:6px 10px;border:1px solid #ddd;background:#f5f5f5;text-align:left;font-weight:600;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;border:1px solid #ddd;background:#f5f5f5;text-align:left;font-weight:600;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;border:1px solid #ddd;background:#f5f5f5;text-align:left;font-weight:600;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;border:1px solid #ddd;background:#f5f5f5;text-align:left;font-weight:600;\"\u003eEngine\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;border:1px solid #ddd;background:#f5f5f5;text-align:left;font-weight:600;\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1993\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e600SL\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e6.0L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1994-2002\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eSL600\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e6.0L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1995\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eSL 72 AMG\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e7.1L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1996-1997\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eSL 70 AMG\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e7.1L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1997-2001\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eSL 73 AMG\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e7.3L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1993-2001\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eRENNTech SL 74\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e7.4L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eRENNTech conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1993-2001\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMercedes-Benz\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eRENNTech SL 76\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e7.6L V12\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eRENNTech conversion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOEM Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMercedes-Benz: 129-500-10-03\u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"CSF Radiators","offers":[{"title":"Default Title","offer_id":55151624683861,"sku":"CSF-7240","price":1320.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/3327\/0357\/files\/CSF-7240_1.webp?v=1790756991","url":"https:\/\/shop.regalautosport.com\/products\/csf-1993-2001-mercedes-benz-r129-sl600-sl-70-sl-72-sl-73-oem-performance-all-aluminum-radiator","provider":"Regal Autosport","version":"1.0","type":"link"}