{"product_id":"csf-3971-drive-motor-inverter-cooler","title":"CSF 3971 Drive Motor Inverter Cooler","description":"\u003ch2\u003eCSF 3971 Drive Motor Inverter Cooler\u003c\/h2\u003e\u003cp\u003eCSF 3971 is an OE-style drive motor inverter cooler built with an aluminum core and plastic tanks for hybrid cooling applications. It is engineered for direct-fit replacement on select Toyota and Lexus models, including the Highlander, Sienna, Grand Highlander, RX350h, and RX450h+.\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 for compact hybrid cooling layouts\u003c\/li\u003e\n\u003cli\u003eUpgraded B-tube design for stronger core construction\u003c\/li\u003e\n\u003cli\u003eTop hose fitting: 3\/4 right\u003c\/li\u003e\n\u003cli\u003eBottom hose fitting: 3\/4 left\u003c\/li\u003e\n\u003cli\u003eCore dimensions: 26 in. length, 4 1\/4 in. width, 7\/8 in. thickness\u003c\/li\u003e\n\u003cli\u003eOEM-style replacement for inverter cooling service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eCSF 3971 is a drive motor inverter cooler designed around OE-style fitment and construction. The aluminum core helps transfer heat efficiently, while the plastic tank design follows the factory-style layout used on modern hybrid cooling systems. CSF notes this unit uses a higher-performance, stronger B-tube core design for added durability in demanding thermal environments. This part cross-references Toyota\/Lexus OE numbers G9010-48100 and G9010-48110 for the same application.\u003c\/p\u003e\u003cp\u003eCompatible With 2020-2025 Toyota Highlander, 2021-2025 Toyota Sienna, 2024-2026 Toyota Grand Highlander, 2023-2025 Lexus RX350h, and 2024-2025 Lexus RX450h+. CSF 3971 is also referenced by Quality-Built 13907.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eInverter cooling system leaks from aging plastic tank assemblies\u003c\/li\u003e\n\u003cli\u003eReduced heat exchange performance in hybrid cooling circuits\u003c\/li\u003e\n\u003cli\u003eCracked or weakened factory-style cooler cores\u003c\/li\u003e\n\u003cli\u003eService replacement needs after coolant contamination or overheating events\u003c\/li\u003e\n\u003cli\u003eFitment issues when replacing the original inverter cooler on supported Toyota and Lexus models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify hose orientation, inlet and outlet dimensions, and mounting points against the original unit before installation. This cooler uses a cross-flow layout with a 3\/4 right top hose fitting and 3\/4 left bottom hose fitting, so matching the factory routing is important for proper installation. Confirm vehicle application by model year before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eCSF manufactures cooling components in ISO\/TSO-certified facilities and validates radiator designs through engineering and wind-tunnel testing. With more than 50 years of production experience and a broad catalog of radiator and cooling applications, CSF applies established manufacturing controls to this inverter cooler platform.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":52918180675765,"sku":"BBMD-3971","price":134.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/C3_3971_Fro.jpg?v=1785566397","url":"https:\/\/www.partcatalog.com\/products\/csf-3971-drive-motor-inverter-cooler","provider":"PartCatalog","version":"1.0","type":"link"}