{"product_id":"lucky-seven-40k-transmission-oil-cooler-lpd47391-40-000-lb-gvw-silver-low-pressure-drop-includes-mounting-hardware","title":"Lucky Seven 40k Transmission Oil Cooler LPD47391 — 40,000 lb GVW (Silver), Low-Pressure Drop, Includes Mounting Hardware","description":"\u003cp\u003e\u003cstrong\u003eThe Lucky Seven LPD47391 40k Transmission Oil Cooler is a heavy-duty, low-pressure-drop cooling kit engineered to protect transmissions in vehicles up to 40,000 lbs GVW.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for commercial trucks, trailers, and high-capacity tow rigs, this transmission cooler kit combines high-capacity heat dissipation with a low restriction flow path to keep transmission fluid temperatures in check without adding system strain. The kit ships complete with brackets, bolts, and mounting hardware for a straightforward install, and Lucky Seven backs the unit with lifetime support to help keep heavy vehicles working reliably under load.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the LPD47391 reduce transmission temperatures without increasing pressure?\u003c\/h3\u003e\n\u003cp\u003eThe LPD47391 uses an engineered low-pressure-drop core that increases heat transfer surface area while preserving flow. That design minimizes resistance so the transmission pump doesn’t have to work harder, avoiding added wear and preserving operating efficiency.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow-pressure-drop core reduces fluid restriction and pump load\u003c\/li\u003e\n  \u003cli\u003eHigh-efficiency fin and tube layout for faster heat rejection\u003c\/li\u003e\n  \u003cli\u003eOptimized internal passages to promote steady, even flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and applications is this cooler suited for?\u003c\/h3\u003e\n\u003cp\u003eThis cooler is rated for vehicles with a maximum gross vehicle weight of 40,000 lbs, making it appropriate for medium- to heavy-duty trucks, commercial trailers, RV tow packages, and other high-capacity towing rigs. It’s compatible with common aftermarket and OEM fittings for transmission cooling systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated up to 40,000 lb GVW for heavy-duty trucks and trailers\u003c\/li\u003e\n  \u003cli\u003eIdeal for frequent towing, hauling, and commercial duty cycles\u003c\/li\u003e\n  \u003cli\u003eWorks with typical transmission fluid lines and fittings used in heavy vehicles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the kit and how difficult is installation?\u003c\/h3\u003e\n\u003cp\u003eThe LPD47391 kit includes the cooler core plus all required mounting hardware: brackets, bolts, and fasteners selected to suit a range of vehicle layouts. Installation is intended for technicians or experienced DIYers and generally requires basic hand tools, a secure mounting point ahead of airflow, and routing of transmission lines to the cooler.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete mounting hardware included for secure attachment\u003c\/li\u003e\n  \u003cli\u003eStandard hose and line connections for straightforward plumbing\u003c\/li\u003e\n  \u003cli\u003eClearances and mounting instructions reduce installation guesswork\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat support and durability can I expect from Lucky Seven's LPD47391?\u003c\/h3\u003e\n\u003cp\u003eLucky Seven offers lifetime support with the LPD47391, providing access to technical assistance and warranty coverage for peace of mind. The cooler is built from corrosion-resistant materials and designed for the thermal demands of heavy-duty service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLifetime support and warranty from Lucky Seven\u003c\/li\u003e\n  \u003cli\u003eDurable construction for commercial operating environments\u003c\/li\u003e\n  \u003cli\u003eDesigned to help extend transmission component life under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The LPD47391 is aimed at fleet operators, truck owners, professional haulers, and anyone who routinely tows heavy loads or operates vehicles near the 40,000 lb GVW range. If you need a robust transmission cooling solution with minimal pressure impact and full mounting hardware included, this kit is built to meet heavy-use demands and simplify installation while offering manufacturer support.\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: Can the LPD47391 be used on a 35,000 lb GVW truck?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The LPD47391 is rated up to 40,000 lb GVW, so it suits a 35,000 lb truck and provides robust cooling capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all parts needed for mounting?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes brackets, bolts, and fasteners required for mounting, though vehicle-specific hoses may be needed.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Lucky Seven","offers":[{"title":"Default Title","offer_id":48080733044894,"sku":"B0D99MDZ1X","price":108.16,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lucky-seven-lpd47391-front-view.jpg?v=1785784485","url":"https:\/\/northtrailauto.ca\/products\/lucky-seven-40k-transmission-oil-cooler-lpd47391-40-000-lb-gvw-silver-low-pressure-drop-includes-mounting-hardware","provider":"North Trail Auto","version":"1.0","type":"link"}