{"product_id":"radium-coolant-expansion-swirl-tank-lotus-elise-exige-2006-2011-2zz-ge","title":"Radium Coolant Expansion Swirl Tank - Lotus Elise \/ Exige 2006-2011 (2ZZ-GE)","description":"\u003cdiv class=\"jdm-product-content\" style=\"text-align: left;\"\u003e\n\u003ch2\u003eRadium Coolant Expansion Swirl Tank - Lotus Elise \/ Exige (2006-2011, 2ZZ-GE)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e2006-2011 Lotus Elise — 2ZZ-GE\u003c\/li\u003e\n  \u003cli\u003e2006-2011 Lotus Exige — 2ZZ-GE\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe Radium Engineering Coolant Expansion Swirl Tank is a remote-mounted header tank designed for custom Lotus applications including engine swaps and turbocharger kits where the OEM expansion tank is no longer in an ideal location. Essential for applications using a low-mounted radiator such as a V-mount, where proper air bleeding requires a correctly positioned header tank.\u003c\/p\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eConstruction\u003c\/h3\u003e\n\u003cp\u003eTwo-piece design CNC-machined from 6061 billet aluminium. The two halves are bolted together along with a CNC billet aluminium cap receiver that mates to any standard 32mm Type-A style pressure cap.\u003c\/p\u003e\n\n\u003ch3\u003eInternal Swirl \/ Vortex Deaeration\u003c\/h3\u003e\n\u003cp\u003eHot pressurised coolant from the cylinder head enters the vortex chamber tangentially and is accelerated to a high rate of rotation. This proven technique aids in deaerating the coolant system — removing entrained air bubbles that can cause hot spots and reduce cooling efficiency.\u003c\/p\u003e\n\n\u003ch3\u003ePorts\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLower ports (x2):\u003c\/strong\u003e 10AN ORB threads with 6AN male adapter fittings\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide port (x1):\u003c\/strong\u003e 6AN ORB threads with 6AN male adapter fitting\u003c\/li\u003e\n  \u003cli\u003eAll fittings use AN ORB (not tapered pipe threads) for a positive, leak-free seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e20-0270-02 — Radium Coolant Expansion Swirl Tank (Lotus Elise \/ Exige 2006-2011, 2ZZ-GE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eWhy Radium Engineering?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ Manufactured in the USA to motorsport-grade tolerances\u003c\/li\u003e\n  \u003cli\u003e✅ CNC-machined billet aluminium components built for performance and longevity\u003c\/li\u003e\n  \u003cli\u003e✅ Trusted by high-power build tuners and race teams worldwide\u003c\/li\u003e\n  \u003cli\u003e✅ Bolt-on fitment — no cutting, drilling, or fabrication required\u003c\/li\u003e\n  \u003cli\u003e✅ Internal vortex deaeration — proven hot rod technique for superior coolant system performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-jdm-brand-link=\"true\" style=\"text-align: left;\"\u003e\u003ca href=\"\/collections\/radium-engineering\"\u003eBrowse more Radium Engineering parts at JDM Mods NQ\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Radium","offers":[{"title":"Default Title","offer_id":67697801920819,"sku":"20-0270-02","price":541.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/1471\/1603\/files\/20-0270-02.jpg?v=1791870693","url":"https:\/\/jdmmodsnq.com\/products\/radium-coolant-expansion-swirl-tank-lotus-elise-exige-2006-2011-2zz-ge","provider":"JDM Mods NQ","version":"1.0","type":"link"}