{"product_id":"korop-transmission-oil-cooler-kit-15-row-lpd47391-40k-gvw-low-pressure-drop-brazed-aluminum","title":"KOROP Transmission Oil Cooler Kit 15-Row LPD47391 40k GVW | Low-Pressure Drop, Brazed Aluminum","description":"\u003cp\u003e\u003cstrong\u003eKOROP's 15-row LPD47391 transmission oil cooler kit is a heavy-duty, low-pressure-drop cooler engineered to lower transmission temperatures and improve durability for vehicles up to 40,000 lb GVW.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis transmission cooler kit upgrades the conventional 13-row design to a denser 15-row brazed-aluminum core that increases heat transfer while minimizing flow restriction. Designed to replace or upgrade LPD47391 \/ 47391 \/ OC-4739-1, the kit includes all mounting hardware and is built for demanding towing, commercial, and heavy-haul applications. It focuses on efficient cooling, easier installation, and lasting corrosion resistance for prolonged service life.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 15-row design improve cooling compared with a standard cooler?\u003c\/h3\u003e\n\u003cp\u003eThe added two rows increase surface area and turbulence control, allowing the cooler to shed more heat per pass without creating excessive backpressure. That means transmission fluid runs cooler under load, which helps maintain consistent operating temperatures during towing and heavy-duty use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e15 brazed aluminum rows for greater thermal surface area.\u003c\/li\u003e\n  \u003cli\u003eUp to 30% more cooling capacity versus the prior 13-row design.\u003c\/li\u003e\n  \u003cli\u003eLower pressure drop to preserve pump efficiency and shift performance.\u003c\/li\u003e\n  \u003cli\u003eOptimized fin geometry for faster heat transfer and airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my vehicle rated up to 40,000 GVW?\u003c\/h3\u003e\n\u003cp\u003eThe cooler is specified for heavy-duty use and matches the LPD47391 family of replacements, making it suitable for cars, vans, light trucks, RVs, and many towing applications up to a 40k GVW rating. Verify vehicle-specific mounting clearances and hose connection configurations before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement number compatibility: LPD47391, 47391, OC-4739-1.\u003c\/li\u003e\n  \u003cli\u003eUniversal-style mounting brackets included for varied chassis layouts.\u003c\/li\u003e\n  \u003cli\u003eFits most transmission lines used in heavy towing and commercial vehicles.\u003c\/li\u003e\n  \u003cli\u003eMeasure clearance and line orientation to confirm fitment beforehand.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation hardware and parts come with the kit?\u003c\/h3\u003e\n\u003cp\u003eKOROP supplies a complete mounting kit so you receive the cooler plus the fasteners needed for a secure installation. The hardware set reduces the need for additional parts and supports multiple mounting positions on frame rails or radiator supports.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDurable steel brackets tailored for secure mounting and vibration resistance.\u003c\/li\u003e\n  \u003cli\u003eHigh-quality bolts, washers, and lock nuts for reliable clamping force.\u003c\/li\u003e\n  \u003cli\u003eRubber isolators and spacers to prevent chafing and dampen vibration.\u003c\/li\u003e\n  \u003cli\u003eClearance for routing lines and access for routine maintenance checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long can I expect the cooler to last and what warranty applies?\u003c\/h3\u003e\n\u003cp\u003eThe brazed aluminum construction resists corrosion and handles thermal cycling better than many brazed or soldered cores, giving it a longer potential service life in harsh conditions. KOROP backs the unit with a 12-month warranty and customer support for pre- and post-sale questions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrazed-aluminum core for enhanced durability and leak resistance.\u003c\/li\u003e\n  \u003cli\u003eDesigned to reduce flow restriction up to 15x compared to restrictive cores.\u003c\/li\u003e\n  \u003cli\u003e12-month limited warranty included for peace of mind.\u003c\/li\u003e\n  \u003cli\u003eAccessible customer support for fitting and troubleshooting advice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The KOROP 15-row LPD47391 cooler kit is aimed at owners and fleet managers who tow frequently, operate commercial or recreational vehicles under heavy loads, or want a reliable upgrade to their transmission cooling system. It's appropriate for anyone replacing a 40K-rated cooler, upgrading from a 13-row core, or seeking a bolt-on solution with all necessary mounting hardware included.\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: Does this cooler replace LPD47391 and similar part numbers?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It is compatible with LPD47391, 47391 and OC-4739-1 replacement numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What warranty does the KOROP cooler include?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes a 12-month warranty and customer support for fitting or product questions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KOROP","offers":[{"title":"Default Title","offer_id":67585567719609,"sku":"B0FY4RN9ZW","price":186.05,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/korop-front-packaging-lpd47391.jpg?v=1790472076","url":"https:\/\/redleafauto.ca\/products\/korop-transmission-oil-cooler-kit-15-row-lpd47391-40k-gvw-low-pressure-drop-brazed-aluminum","provider":"Redleaf Auto","version":"1.0","type":"link"}