{"product_id":"lpd47391-for-tru-cool-40k-transmission-cooler-trans-oil-cooler-gvw-max-40-000","title":"LPD47391 For Tru Cool 40K Transmission Cooler Trans Oil Cooler GVW Max 40,000","description":"\u003ch2\u003eTransmission Cooler LPD47391 for Tru Cool 40K\u003c\/h2\u003e\u003cp\u003eThis LPD47391 transmission cooler is a heavy-duty stacked-plate oil cooler engineered to replace the Tru Cool 40K model, maintaining safe transmission fluid temperatures in vehicles with a gross vehicle weight (GVW) rating up to 40,000 lbs.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThe LPD47391 transmission cooler for Tru Cool 40K applications is built to handle extreme heat generated during towing, hauling, and sustained high-load driving. Its stacked-plate construction offers superior cooling efficiency compared to tube-and-fin designs, making it a popular upgrade for trucks, RVs, and commercial vehicles. Whether you’re climbing grades with a trailer or navigating stop-and-go traffic, the LPD47391 cooler helps protect your transmission from overheating and fluid breakdown.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStacked-plate core design maximizes heat transfer surface area\u003c\/li\u003e\n\u003cli\u003eRated for gross vehicle weight up to 40,000 lbs\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement mounts in the same location as the Tru Cool 40K\u003c\/li\u003e\n\u003cli\u003eDurable aluminum construction withstands road vibration and corrosion\u003c\/li\u003e\n\u003cli\u003eLow internal restriction maintains consistent fluid pressure\u003c\/li\u003e\n\u003cli\u003eLarge inlet and outlet ports support high-volume fluid flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLong-haul towing with trailers, fifth-wheels, and goosenecks\u003c\/li\u003e\n\u003cli\u003eMotorhome and RV transmission cooling on steep mountain passes\u003c\/li\u003e\n\u003cli\u003eStop-and-go delivery routes in hot summer temperatures\u003c\/li\u003e\n\u003cli\u003ePerformance driving and track days where transmission temps climb rapidly\u003c\/li\u003e\n\u003cli\u003eCommercial fleet operations that demand reliable daily transmission cooling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLPD47391\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax GVW Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40,000 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is the LPD47391 a direct replacement for the Tru Cool 40K cooler? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it shares the same dimensions and hose fittings as the Tru Cool 40K, enabling straightforward bolt-in installation on most vehicles that originally used that model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Do I need to add a thermostat with this transmission cooler? \u003cstrong\u003eA:\u003c\/strong\u003e A thermostat is not required but can be beneficial in cold climates to prevent over-cooling and allow the transmission to reach normal operating temperature faster.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44965107859542,"sku":"ZZ3A01043","price":129.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_29b98375-45da-41ef-9180-ef6a58dffc8e.png?v=1781653856","url":"https:\/\/www.solidspare.com\/products\/lpd47391-for-tru-cool-40k-transmission-cooler-trans-oil-cooler-gvw-max-40-000","provider":"Solid Spare","version":"1.0","type":"link"}