{"product_id":"lucky-seven-40k-transmission-oil-cooler-lpd47391-40-000-lb-gvw-low-pressure-drop-includes-mounting-kit-black","title":"Lucky Seven 40k Transmission Oil Cooler LPD47391 — 40,000 lb GVW, Low-Pressure Drop, Includes Mounting Kit (Black)","description":"\u003cp\u003e\u003cstrong\u003eThe Lucky Seven LPD47391 40k Transmission Oil Cooler Kit is a heavy-duty, low-pressure-drop cooler engineered to protect transmissions on vehicles up to 40,000 lb GVW and includes a full mounting kit for fast installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for commercial trucks, trailers, towing rigs and large SUVs, the LPD47391 helps control transmission temperatures during heavy loads, long hauls and demanding conditions. Its low-pressure-drop architecture promotes efficient oil flow with reduced system resistance, while the supplied brackets, bolts and fasteners make it straightforward to fit the cooler to a wide variety of chassis and frame layouts. Backed by a lifetime warranty, the unit aims to extend transmission life and support dependable performance under sustained stress.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this cooler reduce transmission heat while preserving oil flow?\u003c\/h3\u003e\n\u003cp\u003eThe LPD47391 uses an advanced core and fin layout that maximizes heat transfer area while minimizing flow restriction. That low-pressure-drop design keeps oil circulating efficiently so the transmission maintains optimal lubrication and hydraulic function during towing or heavy use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh-efficiency cooling core with increased surface area for heat dissipation\u003c\/li\u003e\n  \u003cli\u003eFluid passages engineered to lower pressure loss and maintain oil flow\u003c\/li\u003e\n  \u003cli\u003eCorrosion-resistant finish for consistent thermal performance over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this cooler fit my heavy truck, trailer or towing rig?\u003c\/h3\u003e\n\u003cp\u003eThe LPD47391 is specified for vehicles with a maximum gross vehicle weight (GVW) of 40,000 lb, making it suitable for many commercial trucks, trailers, large SUVs and vocational vehicles. The kit includes universal-style mounting hardware intended to accommodate common frame and bumper mounting points.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated for up to 40,000 lb GVW—built for heavy-duty applications\u003c\/li\u003e\n  \u003cli\u003eComes with brackets, bolts and fasteners to simplify installation\u003c\/li\u003e\n  \u003cli\u003eDesigned to be compatible with Tru-Cool style setups and common transmission lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what hardware is included?\u003c\/h3\u003e\n\u003cp\u003eInstallation is aimed at mechanics and experienced DIYers. Lucky Seven supplies a complete mounting kit so you won’t need to source separate brackets or fasteners; basic tools and a vehicle lift or jack stands are recommended for safe installation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFull mounting kit: brackets, bolts and fasteners included\u003c\/li\u003e\n  \u003cli\u003eStraightforward bolt-on fit for many mounting locations\u003c\/li\u003e\n  \u003cli\u003eClearance and hose routing considerations provided to avoid line interference\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat long-term benefits can I expect from adding this cooler?\u003c\/h3\u003e\n\u003cp\u003eBy holding transmission oil temperatures in check during heavy loads and sustained towing, the LPD47391 helps reduce wear on seals, clutches and gearsets. Consistent, lower operating temperatures can mean fewer heat-related failures and more reliable shifting under stress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHelps protect transmission components from heat-related degradation\u003c\/li\u003e\n  \u003cli\u003eSupports consistent shift performance under load\u003c\/li\u003e\n  \u003cli\u003ePotential for improved efficiency and reduced risk of overheating during long hauls\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Lucky Seven LPD47391 40k Transmission Oil Cooler Kit is aimed at fleet operators, commercial drivers, towing enthusiasts and owners of heavy SUVs or trucks who frequently carry heavy loads, tow trailers or drive in hot or demanding conditions. If you need a rugged, low-restriction cooler rated for up to 40,000 lb GVW with a full mounting kit and lifetime warranty, this product is engineered for that purpose.\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: Is the LPD47391 compatible with my 30,000 lb GVW truck?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s rated to 40,000 lb GVW, so it fits vehicles up to that limit, including 30,000 lb trucks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include everything needed to mount the cooler?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The kit includes brackets, bolts and fasteners for common mounting setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Lucky Seven","offers":[{"title":"Default Title","offer_id":48082758631582,"sku":"B0F17LK6FG","price":109.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/lucky-seven-lpd47391-front-view_a8037153-18ef-4706-af43-79da4fa803dc.jpg?v=1785813368","url":"https:\/\/northtrailauto.ca\/products\/lucky-seven-40k-transmission-oil-cooler-lpd47391-40-000-lb-gvw-low-pressure-drop-includes-mounting-kit-black","provider":"North Trail Auto","version":"1.0","type":"link"}