{"title":"GM Radiator Expansion Tanks","description":"\u003cp\u003eUpgrade your cooling system with a high-quality GM radiator expansion tank, also known as a coolant reservoir or overflow tank, designed to keep your engine running at optimal temperature under any conditions. These tanks play a critical role by capturing excess coolant as it expands during heat cycles and returning it to the radiator as the engine cools, ensuring consistent pressure and preventing fluid loss. Over time, factory tanks can crack, discolor, leak, or fail to maintain proper pressure. These are common signs it’s time for a replacement to avoid overheating and costly engine damage. Whether you’re restoring a daily driver, building a performance street car, or pushing your vehicle on the track, a durable, upgraded expansion tank provides improved reliability and peace of mind. Granatelli Motor Sports, a trusted name with over 75 years of racing heritage and innovation, offers precision-engineered products that enthusiasts rely on for both performance and durability, making it a go-to choice when upgrading critical engine components like coolant expansion systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e \u003c\/p\u003e","products":[{"product_id":"i-30501095-granatellimotor-sportscoolant-and-expansion-tanks-500301","title":"Granatelli Motor Sports Coolant and Expansion Tanks 500301","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli Motor Sports Coolant and Expansion Tank – 500301\u003c\/strong\u003e\u003c\/h2\u003e \n\n\u003ch2\u003e\u003cstrong\u003eSKU: 500301\u003c\/strong\u003e\u003c\/h2\u003e \n\u003cp\u003eThe Granatelli Motor Sports Coolant and Expansion Tank – 500301 is a polished aluminum coolant overflow and expansion tank engineered for performance engines and custom builds. Designed to maintain proper coolant levels and help manage heat under high-stress driving conditions, this compact tank delivers dependable service while enhancing your engine bay’s appearance.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eWhy Choose the 500301 Coolant \u0026amp; Expansion Tank?\u003c\/strong\u003e\u003c\/h3\u003e \n\n\u003ch3\u003e\u003cstrong\u003ePremium Aluminum Construction\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eBuilt from polished aluminum, this tank resists corrosion and stands up to high temperatures and the demands of performance driving. Precision fabrication ensures long-lasting durability with a clean, professional finish.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eOptimized Capacity \u0026amp; Dimensions\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eWith a \u003cstrong\u003e1.25-quart capacity\u003c\/strong\u003e, this rectangular tank provides sufficient coolant overflow capacity for most performance and custom applications. It measures approximately \u003cstrong\u003e3.00″ L × 4.50″ W × 7.00″ H\u003c\/strong\u003e, making it ideal for tight engine bays.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eEasy Integration with Standard Cooling Systems\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eFeaturing a \u003cstrong\u003e3\/8″ NPT inlet\u003c\/strong\u003e and \u003cstrong\u003e1\/2″ NPT outlet\u003c\/strong\u003e, this expansion tank integrates smoothly with most custom coolant plumbing setups. Installation is straightforward and builder-friendly.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003ePolished Finish for Show-Quality Style\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eThe polished aluminum exterior adds visual appeal to any engine compartment. Functional and clean-looking, it complements both performance builds and show cars alike.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eCompact Yet Functional Design\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eThe thoughtful port placement and rectangular shape allow for a clean, unobtrusive installation. Easy to tuck away or showcase as part of a custom engine bay.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eBuilt for All Builds\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eFrom restorations and daily drivers to high-output performance machines, this expansion tank delivers reliable coolant management wherever it’s needed.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eReliable Cooling Starts Here\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eThe \u003cstrong\u003eGranatelli Motor Sports Coolant and Expansion Tank – 500301\u003c\/strong\u003e gives you the capacity, quality, and polished style performance builders demand. Keep temperatures in check, prevent overflow issues, and upgrade your cooling system with confidence — no compromises.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46914231533724,"sku":"500301","price":117.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/F198647038.png?v=1779219931"},{"product_id":"i-30501096-granatellimotor-sportscoolant-and-expansion-tanks-500302","title":"Granatelli Motor Sports Coolant and Expansion Tanks 500302","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli Motor Sports Coolant and Expansion Tank – 500302\u003c\/strong\u003e\u003c\/h2\u003e \n\n\u003ch2\u003e\u003cstrong\u003eSKU: 500302\u003c\/strong\u003e\u003c\/h2\u003e \n\u003cp\u003eThe is a rugged, polished aluminum coolant overflow and expansion tank engineered for performance engines and custom builds. Designed to maintain proper coolant levels and help manage heat under high-stress driving conditions, this compact tank delivers reliable service while enhancing your engine bay’s look with its race-ready finish.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eWhy Choose the 500302 Coolant \u0026amp; Expansion Tank?\u003c\/strong\u003e\u003c\/h3\u003e \n\n\u003ch3\u003e\u003cstrong\u003ePremium Aluminum Construction\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eBuilt from polished aluminum, this tank resists corrosion and stands up to the high temperatures and rigors of performance driving. With precise fabrication and a sleek finish, it looks as good as it performs.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eOptimized Capacity \u0026amp; Dimensions\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eWith a \u003cb\u003e2.50-quart capacity\u003c\/b\u003e and a compact rectangular design (approx. 4.00″ L × 4.50″ W × 9.50″ H), this tank holds an ample volume of coolant while fitting easily into tight engine bays. Its layout makes it adaptable for a wide range of vehicles and applications.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eEasy Integration with Standard Cooling Systems\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eFeaturing a \u003cb\u003e1\/4″ NPT bottom inlet\u003c\/b\u003e and \u003cb\u003e1\/8″ NPT top neck outlet,\u003c\/b\u003e and supplied with a billet neck and cap with a 1\/4″ nipple, this tank integrates smoothly with most custom coolant plumbing setups. Whether you’re upgrading a street car or building a track machine, plumbing is flexible and straightforward.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003ePolished Finish for Show-Quality Style\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eThe highly polished aluminum exterior adds visual flair to your engine compartment. It’s not just practical — it’s a statement piece that complements performance builds and show cars alike.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eCompact Yet Functional Design\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eIts rectangular shape and thoughtful port placement make installation clean and unobtrusive, so you can tuck it neatly out of the way or highlight it as part of a custom engine bay presentation. \u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eBuilt for All Builds\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eWhether you’re tackling a restoration, a custom project, or a high-output performance build, this expansion tank offers a simple, effective solution for coolant management.\u003c\/p\u003e \n\n\u003ch3\u003e\u003cstrong\u003eReliable Cooling Starts Here\u003c\/strong\u003e\u003c\/h3\u003e \n\u003cp\u003eThe \u003cb\u003eGranatelli Motor Sports Coolant and Expansion Tank – 500302\u003c\/b\u003e gives you the capacity, quality, and polished good looks that performance builders demand. Keep temperatures in check, prevent overflow problems, and give your engine bay the upgrade it deserves — no compromises.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46914231795868,"sku":"500302","price":137.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/F198645818.jpg?v=1779219931"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/collections\/F198645399.jpg?v=1778788362","url":"https:\/\/granatellimotorsports.com\/collections\/c-1389328-engine-drivetrain-engine-components-accessories-gm-radiator-expansion-tanks.oembed","provider":"Granatellimotorsports","version":"1.0","type":"link"}