{"product_id":"radium-engineering-coolant-expansion-tank-20-0270-00","title":"Radium Engineering Coolant Expansion Tank (20-0270-00)","description":"\u003cp\u003e\u003cstrong\u003eA V-mount or rear-mounted radiator cannot bleed itself, and trapped air is how cooling systems fail quietly.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen the radiator sits low or far from the engine, the highest point of the system needs to do the deaerating, and that is exactly what an expansion tank is for. The \u003cstrong\u003eRadium Engineering Universal Coolant Expansion Tank\u003c\/strong\u003e is a 750mL, 2-piece CNC billet 6061 aluminum tank that becomes part of the pressurized coolant system, allowing the radiator to stay 100 percent full of coolant in all conditions. Inside, two connected chambers and a tangential-inlet vortex swirl feature spin incoming hot coolant to strip entrained air out of circulation. This is not an overflow bottle; it is the cooling system's air management brain.\u003c\/p\u003e\n\u003ch3\u003eWhat You'll Feel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReliable bleeding on V-mount, rear-radiator, and other unconventional layouts that trap air by design\u003c\/li\u003e\n\u003cli\u003eA radiator running completely full instead of carrying an air pocket for expansion\u003c\/li\u003e\n\u003cli\u003eDeaerated coolant circulating, with the swirl chamber spinning bubbles out of the flow\u003c\/li\u003e\n\u003cli\u003eA sight tube showing coolant level at a glance\u003c\/li\u003e\n\u003cli\u003eReal AN plumbing on ORB ports instead of clamped heater hose\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e750mL capacity, 2-piece CNC billet 6061 aluminum construction with low-profile two-chamber design\u003c\/li\u003e\n\u003cli\u003eInternal chambers connected by crossover passages top and bottom; tangential vortex inlet swirl feature deaerates the system\u003c\/li\u003e\n\u003cli\u003eBillet aluminum neck accepts a standard 32mm \"Mini\" style pressure cap; cap must be Type-A seal style (sold separately)\u003c\/li\u003e\n\u003cli\u003e2x bottom ports 10AN ORB, 1x front port 6AN ORB, with 6AN male adapter fittings included\u003c\/li\u003e\n\u003cli\u003eKit includes anodized mounting bracket, 3x 6AN 90 degree Push-Lok hose ends, nickel-plated fittings and sight tube, 1\/4\" pressure bleed barb, and stainless hardware\u003c\/li\u003e\n\u003cli\u003ePart of the pressurized system, not a coolant overflow tank\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Details\u003c\/h3\u003e\n\u003cp\u003eTraditional cooling systems tolerate expansion by leaving air in the top of the radiator, which costs cooling capacity and becomes a real problem the moment the radiator is no longer the system's high point. This tank takes over that job: mounted at the highest point, it gives expansion its space, collects the system's air, and the swirl chamber accelerates hot coolant from the cylinder head into rotation so bubbles separate before the coolant returns to work. The ORB ports open real plumbing options, with the 10AN bottom ports feeding and returning main flow and the 6AN front port handling the head bleed or vent line, and Radium's full ORB adapter catalog fits when your routing needs something other than the included 6AN fittings. Cap selection matters twice: it must be a 32mm Type-A seal design, and choosing Radium's optional 1.1, 1.3, or 1.5 Bar stainless caps raises the system's boiling point for track duty. Cap sold separately.\u003c\/p\u003e\n\u003ch3\u003eKit Includes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Billet aluminum coolant expansion tank with 32mm pressure cap receiver\u003c\/li\u003e\n\u003cli\u003e1x Anodized aluminum mounting bracket\u003c\/li\u003e\n\u003cli\u003e3x 6AN male adapter fittings and 3x 6AN 90 degree Push-Lok hose ends\u003c\/li\u003e\n\u003cli\u003eNickel-plated fittings and sight tube\u003c\/li\u003e\n\u003cli\u003e1x Aluminum 1\/4\" pressure bleed barb\u003c\/li\u003e\n\u003cli\u003eStainless steel hardware\u003c\/li\u003e\n\u003cli\u003ePressure cap NOT included; requires 32mm Type-A style cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal: V-mount, rear-mounted, and low-mounted radiator systems requiring proper air bleeding\u003c\/li\u003e\n\u003cli\u003eAlso valuable integrated into common radiator setups for full-radiator operation\u003c\/li\u003e\n\u003cli\u003ePairs with Radium 1.1\/1.3\/1.5 Bar Type-A pressure caps, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":43672690982979,"sku":"20-0270-00","price":294.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0064\/7754\/5539\/files\/radium-engineering-rad-20-0270-00-20803169475_de36bd0a-7a1e-4622-b6de-f828fee015a0.jpg?v=1786717072","url":"https:\/\/www.tunedbyshawn.com\/products\/radium-engineering-coolant-expansion-tank-20-0270-00","provider":"Tuned by Shawn","version":"1.0","type":"link"}