{"product_id":"hayden-automotive-689-universal-add-on-transmission-cooler-11-6-inch-x-11-inch-x-0-75-inch-not-oe-replacement","title":"Hayden Automotive 689 Universal Add-On Transmission Cooler — 11.6-inch x 11-inch x 0.75-inch (Not OE Replacement)","description":"\u003cp\u003eHayden Automotive presents the 689 Universal Add-On Transmission Cooler, a compact yet capable plate-and-fin unit designed to support demanding towing scenarios. Measuring 11.6 inches by 11 inches with a 0.75 inch thickness (about 19 mm), it fits tighter engine bays and RV compartments while delivering a substantial heat exchange surface. The kit includes the cooler, hose, and mounting hardware, providing a ready-to-install solution for curious DIY setups or professional installs.\u003c\/p\u003e\n\u003ch3\u003eKey design highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSize and durability: 11.6 by 11 by 0.75 inches, built for heavy duty use\u003c\/li\u003e\n  \u003cli\u003e13.5 plate surface with a plate-and-fin core designed for efficient heat transfer\u003c\/li\u003e\n  \u003cli\u003ePatented Flow Path Design to boost heat transfer while minimizing pressure drop\u003c\/li\u003e\n  \u003cli\u003eIncludes cooler, hose assembly, and mounting hardware for a complete install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRugged compatibility for heavy tow setups\u003c\/h3\u003e\n\u003cp\u003eThis add-on cooler is crafted for Class A motor homes, large travel trailers, and fifth wheel trailers. It supports demanding towing when combined with your vehicle’s cooling loop, with GVWR up to 30,000 pounds and towing capability up to 10,000 pounds.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-drilled mounting brackets for straightforward installation\u003c\/li\u003e\n  \u003cli\u003eSix male flare fittings allow a secure hard plumb into the system\u003c\/li\u003e\n  \u003cli\u003eCompact, robust design that works in a range of engine bays and trailer compartments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use scenarios\u003c\/h3\u003e\n\u003cp\u003eOn long highway climbs, in summer heat, or during continuous towing, this cooler is designed to help manage transmission temperatures. RV owners and tow enthusiasts may experience more stable performance under load, depending on the overall system setup.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRV caravans and camping trips with steady towing demands\u003c\/li\u003e\n  \u003cli\u003eMountain grades and hot weather conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: This is an add-on cooler, not a direct OE replacement. It is designed to supplement your existing cooling system and requires compatible hoses and fittings.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What vehicles is the Hayden 689 cooler suitable for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Suitable for Class A motor homes, large travel trailers, and 5th wheels; GVWR up to 30,000 lb and towing up to 10,000 lb.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this cooler a direct OE replacement?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It is an add-on cooler designed to supplement existing cooling capacity; includes mounting hardware and hose for installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hayden Automotive","offers":[{"title":"Default Title","offer_id":42465903476821,"sku":"B0049EZDZ0","price":106.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/hayden-689-transmission-cooler-side-view.jpg?v=1778028224","url":"https:\/\/plentytorque.co.uk\/products\/hayden-automotive-689-universal-add-on-transmission-cooler-11-6-inch-x-11-inch-x-0-75-inch-not-oe-replacement","provider":"PlentyTorque","version":"1.0","type":"link"}