{"product_id":"aluminum-coolant-overflow-expansion-tank-for-infiniti-q60-2017-2021-3-0l","title":"Aluminum Coolant Overflow Expansion Tank for Infiniti Q60 (2017-2021) 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eTIG-Welded Aluminum Coolant Overflow Expansion Tank for 2017-2021 Infiniti Q60 (CV37)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Aluminum Coolant Overflow Expansion Tank replaces the leak-prone dual-chamber factory plastic reservoir on the 2017-2021 Infiniti Q60 to eliminate seam failure and maintain constant cooling system operating pressure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Infiniti Q60 Plastic Reservoir Failure Point\u003c\/h3\u003e\n\u003cp\u003eFrom the factory, the \u003cstrong\u003eCV37\u003c\/strong\u003e Q60 relies on a molded dual-chamber plastic tank to manage thermal expansion across two independent circuits: the engine block cooling system and the water-to-air charge-air cooler circuit. In the twin-turbocharged \u003cstrong\u003eVR30DDTT\u003c\/strong\u003e engine bay, radiant exhaust manifold heat and extreme thermal cycling degrade the stock polymer. Over time, plastic fatigue leads to micro-fracturing along the molded ultrasonic center seam, neck deformation, and pressure loss. When tuned cars run increased boost, elevated engine bay heat accelerates embrittlement, often causing catastrophic coolant venting and pressurized fluid loss mid-drive.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed from heavy-duty \u003cstrong\u003eAA5052 aluminum\u003c\/strong\u003e, this direct-replacement expansion tank eliminates brittle plastic failure points. The unit features 100% precision TIG-welded seams engineered to withstand elevated cooling system pressure without fatigue, ballooning, or stress-cracking. It maintains the factory dual-chamber internal isolation, preserving separate fluid circuits for the twin-turbo charge coolers and the primary radiator. Complete with vehicle-matched inlet and outlet barbs, factory-spec mounting tabs, and replacement pressurized caps, this tank bolts directly to the OEM chassis location with zero line modification.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2017-2021 Infiniti Q60\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eVR30DDTT\u003c\/strong\u003e \/ \u003cstrong\u003eCV37\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e300-400 hp \/ 295-350 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\u003cstrong\u003e21710-5CF0A\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2017 - 2021 Infiniti Q60 3.0t Luxe (3.0L Twin Turbo VR30DDTT)\u003c\/li\u003e\n  \u003cli\u003e2017 - 2021 Infiniti Q60 3.0t Sport (3.0L Twin Turbo VR30DDTT)\u003c\/li\u003e\n  \u003cli\u003e2017 - 2018 Infiniti Q60 3.0t Premium (3.0L Twin Turbo VR30DDTT)\u003c\/li\u003e\n  \u003cli\u003e2017 - 2021 Infiniti Q60 Red Sport 400 (3.0L Twin Turbo VR30DDTT)\u003c\/li\u003e\n  \u003cli\u003eNote: Does not fit 2.0L Turbo 4-cylinder Q60 models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the CV37 Q60?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2017-2021 Infiniti Q60 equipped with the \u003cstrong\u003eVR30DDTT\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to bleed both cooling systems after installation?\u003c\/h4\u003e\n\u003cp\u003eYes, because the VR30 platform utilizes separate engine and intercooler circuits, both loops must be drained, refilled, and independently bled of air pockets to prevent heat soak and overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Infiniti Performance Standard\u003c\/h3\u003e\n\u003cp\u003eThe VR30 platform generates substantial boost and rapid power delivery, demanding bulletproof thermal management hardware that outlasts repetitive heat cycles on the street and track.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67525242421496,"sku":"DS-ELWZH6KNU","price":278.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/aluminum-coolant-overflow-expansion-tank-for-infiniti-q60-2017-2021-3-0l-1.jpg?v=1790479123","url":"https:\/\/performancechiptuning.com\/products\/aluminum-coolant-overflow-expansion-tank-for-infiniti-q60-2017-2021-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}