{"product_id":"koyo-performance-radiator-mazda-rx-7-1-3l-turbo-n-flo-dual-pass-1993-1995","title":"Koyo Performance Radiator Mazda RX-7 1.3L Turbo N-FLO (Dual Pass) 1993-1995","description":"\u003ch2\u003eKoyo Performance Radiator – Mazda RX-7 FD3S 1.3L Twin Turbo N-FLO Dual Pass 1991–1995\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Mazda RX-7 | FD3S (2D Coupe) | 13B-T 1.3L Twin Turbo Petrol RWD | Manual Transmission Only\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e HH060644N \/ KH060644NU06\u003c\/p\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003cp\u003eThe FD RX-7 is one of the most thermally demanding platforms in the performance world — a sequential twin-turbo rotary in a compact, tightly packaged engine bay that generates serious heat. The factory cooling system was engineered to cope, but when you're pushing the FD harder or running more boost, it quickly becomes the limiting factor.\u003c\/p\u003e\u003cp\u003eKoyorad's N-FLO Technology was developed specifically for applications like this. Where the factory inlet and outlet locations allow proper placement, Koyorad precision-welds aluminium partitions into the upper and lower tanks, creating a double-pass coolant flow path. This keeps coolant in the radiator longer, transferring significantly more heat to the surrounding air before returning to the engine — a meaningful upgrade over a conventional single-pass design.\u003c\/p\u003e\u003cp\u003eThe result is a direct bolt-in radiator that retains all OEM fan shroud mounts and stock hose connections, with no engine modifications required. Built to the same exacting standards as every Koyorad All Aluminium Racing Radiator — Nocolok furnace brazed, precision TIG welded by hand, and triple pressure tested.\u003c\/p\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003ch3\u003eWhy Koyorad?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eN-FLO Dual Pass Technology\u003c\/strong\u003e — Aluminium partitions in the upper and lower tanks create a double-pass coolant flow, maximising heat transfer and cooling efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Tube \u0026amp; Fin Alignment\u003c\/strong\u003e — Strict quality control ensures optimal coolant flow and maximum heat transfer efficiency across the entire core.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNocolok Furnace Brazing\u003c\/strong\u003e — All tubes, fins, headers, and brackets are bonded in a state-of-the-art Nocolok furnace, creating a structure that resists vibration, road debris, and the elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Filler Neck\u003c\/strong\u003e — Precision-machined billet filler necks are fitted to every unit for superior strength, durability, and a reliable seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOE-Specific Mounting \u0026amp; Hand-Crafted Heliarc Welds\u003c\/strong\u003e — Application-specific mounting points and individually hand-welded construction ensure a pain-free install and the strongest possible aluminium-to-aluminium bond.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eHH060644N \/ KH060644NU06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eCore Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eN-FLO Dual Pass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eCore Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e48mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eCore Dimensions (H × W)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e313 × 609\/629mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eTube Pitch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e55\/55 × 647mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eInlet \/ Outlet Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eØ38mm (top \u0026amp; bottom)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eAll Aluminium, Nocolok Brazed, Heliarc Welded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eManual (MT) Only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eFan Shroud\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eRetains OEM mounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eHoses\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eCompatible with stock radiator hoses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eDirect bolt-in, no modifications required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003ch3\u003eCross Reference\u003c\/h3\u003e\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eKoyorad\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eHH060644N \/ KH060644NU06\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e\u003cstrong\u003eMazda OEM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eN3A1 15 200 \/ N3A1 15 200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; text-align: left;\"\u003eYear\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; text-align: left;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; text-align: left;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; text-align: left;\"\u003eChassis\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px 12px; text-align: left;\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003e1992–1995\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eMazda\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eRX-7\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eFD3S (2D Coupe)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px 12px;\"\u003eSeries 6 – 13B-REW 1.3L Twin Turbo Petrol RWD (176kW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003cp\u003e\u003cem\u003eSold individually. Manual transmission fitment only. Lead times may apply — contact us at Coore for availability and shipping estimates.\u003c\/em\u003e\u003c\/p\u003e\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003eCoore Performance \u0026amp; Aftermarket is an Authorised Australian Distributor of Koyorad Performance Radiators.\u003c\/strong\u003e\u003cbr\u003eShop with confidence — all Koyorad products sold through Coore are genuine, backed by manufacturer support, and shipped from Australia.\u003c\/p\u003e","brand":"Koyorad","offers":[{"title":"Default Title","offer_id":66757557322032,"sku":"HH060644N","price":799.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0934\/3156\/2544\/files\/s-l1600_4.webp?v=1778545656","url":"https:\/\/coore.com.au\/products\/koyo-performance-radiator-mazda-rx-7-1-3l-turbo-n-flo-dual-pass-1993-1995","provider":"Coore | Performance \u0026 Aftermarket","version":"1.0","type":"link"}