{"product_id":"csf-3970-radiator","title":"CSF 3970 Radiator","description":"\u003ch2\u003eOE-Style Radiator for Toyota Highlander and Grand Highlander\u003c\/h2\u003e\u003cp\u003eCSF 3970 is a cross flow radiator built with an aluminum core and plastic tanks in an OE-style layout. It is engineered for direct replacement use on select Toyota Highlander and Toyota Grand Highlander applications, with upgraded B-tube construction for improved heat transfer and durability.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAluminum core with plastic tank construction\u003c\/li\u003e\n\u003cli\u003eCross flow design with 1-row core\u003c\/li\u003e\n\u003cli\u003eCore thickness: 5\/8 in.\u003c\/li\u003e\n\u003cli\u003eInlet: 1 1\/2 in. left; outlet: 1 1\/2 in. right\u003c\/li\u003e\n\u003cli\u003eCore dimensions: 27 9\/16 in. length x 22 5\/16 in. width\u003c\/li\u003e\n\u003cli\u003eOE-style replacement with stronger B-tube design\u003c\/li\u003e\n\u003cli\u003eCSF part number 3970\u003c\/li\u003e\n\u003cli\u003eCross-references Bosch 13842 for the same application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eCSF 3970 is designed for cooling-system service on 2020-2025 Toyota Highlander and 2024-2026 Toyota Grand Highlander models. The radiator uses an aluminum core paired with plastic tanks, matching the OE-style layout while incorporating a higher-performance B-tube design for improved cooling efficiency. With a 5\/8-inch core thickness, cross flow configuration, and 1 1\/2-inch inlet and outlet sizing, this radiator is built around the factory-style fitment requirements of these Toyota SUVs. If you are replacing a worn or leaking radiator on a Toyota Highlander or Toyota Grand Highlander, CSF 3970 provides a direct-fit cooling solution backed by CSF’s long-running radiator manufacturing experience.\u003c\/p\u003e\u003ch2\u003eWhat This Radiator Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCoolant leaks from a damaged or aging radiator tank or core\u003c\/li\u003e\n\u003cli\u003eOverheating caused by restricted or inefficient heat exchange\u003c\/li\u003e\n\u003cli\u003eCooling-system service needs after radiator corrosion or wear\u003c\/li\u003e\n\u003cli\u003eReplacement of a factory-style radiator on Toyota Highlander and Grand Highlander models\u003c\/li\u003e\n\u003cli\u003eRestoration of stable engine operating temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify inlet and outlet orientation before installation: this unit uses a left-side inlet and right-side outlet. Confirm radiator dimensions and mounting layout against the original part before removal. Transfer any vehicle-specific components required by the application, and inspect hoses, clamps, and coolant condition during replacement. This part is listed for 2020-2025 Toyota Highlander and 2024-2026 Toyota Grand Highlander applications.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eCSF manufactures radiators to high-performance standards and validates cooling performance through laboratory wind tunnel testing. The brand states its factories are ISO\/TSO certified and that it has supplied radiators worldwide for more than 50 years.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":52431274836149,"sku":"BBMD-3970","price":182.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/C3_3970_Fro.jpg?v=1777849889","url":"https:\/\/www.partcatalog.com\/products\/csf-3970-radiator","provider":"PartCatalog","version":"1.0","type":"link"}