--- product_id: 781059632 title: "40k Transmission Oil Cooler lpd47391" brand: "lucky seven" price: "R239" currency: ZAR in_stock: false reviews_count: 5 url: https://www.desertcart.co.za/products/781059632-40k-transmission-oil-cooler-lpd47391 store_origin: ZA region: South Africa --- # Complete mounting hardware included 40,000 lbs GVW max heavy-duty capacity Low-pressure drop tech for max cooling 40k Transmission Oil Cooler lpd47391 **Brand:** lucky seven **Price:** R239 **Availability:** ❌ Out of Stock ## Summary > ❄️ Keep your transmission chill and your ride unstoppable! ## Quick Answers - **What is this?** 40k Transmission Oil Cooler lpd47391 by lucky seven - **How much does it cost?** R239 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/781059632-40k-transmission-oil-cooler-lpd47391) ## Best For - lucky seven enthusiasts ## Why This Product - Trusted lucky seven brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug-and-Play Installation:** Includes all bolts, fasteners, and brackets for a secure, hassle-free setup. - • **Extend Transmission Lifespan:** Maintains optimal temps to boost fuel efficiency and prevent costly repairs. - • **Built for Heavy-Duty Powerhouses:** Supports vehicles up to 40,000 lbs GVW—perfect for trucks, trailers, and towing pros. - • **Maximize Transmission Efficiency:** Advanced low-pressure drop design reduces energy loss and keeps your transmission running cooler. - • **Confidence with Lifetime Warranty:** Backed by dedicated support and a lifetime warranty for peace of mind on every mile. ## Overview The 40k Transmission Oil Cooler LPD47391 is engineered for heavy-duty vehicles up to 40,000 lbs GVW, featuring advanced low-pressure drop technology to optimize cooling efficiency. It comes complete with mounting hardware for easy installation and is designed to extend transmission life by maintaining ideal operating temperatures. Backed by a lifetime warranty, this cooler is a reliable upgrade for trucks, trailers, and towing vehicles seeking enhanced performance and durability. ## Description 40k Transmission Oil Cooler lpd47391 Compatible with tru cool Heavy Duty 40,000 GVW Max - low pressure drop trans cooler Review: Good price lasting quality - Had this trans cooler on my truck for at least 6 months now and it has not given my a sing issue. The install was simple. I installed this on my 99 Silverado for my built 4l60e and have seen my trans temps stay low even after doing hard pulls. Amazing price and quality Review: AVOID THE LINES IT COMES WITH - The cooler itself amazing but the lines are horrible the first time the line popped i thought i installed it wrong took it to a shop they used the same line and as i was driving i did not notice the line popped leaving the shop until my truck started idling after trying to speed up causing my transmission to messs up i ordered new lines good one and hope this doesn’t mess anyone else transmisson up avoid the line it comes with dont put it on even just to test it i ended up waisting way more just for trusting this line ## Features - [Application and Compatibility] The LPD47391 40k Transmission Oil Cooler Kit is engineered for heavy-duty vehicles, with a maximum GVW of 40,000 lbs. Transmission cooler,Perfect for large trucks, trailers, and towing vehicles, it ensures your vehicle runs cooler and more efficiently. - [Low Pressure Drop Design] LPD47391 40k Transmission Oil Cooler Kit,With advanced low-pressure drop technology, the cooler minimizes energy consumption and system pressure loss, maximizing transmission efficiency while protecting critical components from excessive heat. - [Includes Mounting Hardware] The LPD47391 40k Transmission Oil Cooler Kit includes all essential mounting hardware – bolts, fasteners, and brackets – designed for various vehicle types. With simple installation, you’ll have a secure, stable fit for long-term reliability. - [Advanced Cooling Protection] LPD47391 40k Transmission Oil Cooler Kit,Designed for advanced cooling protection, this kit maintains optimal transmission temperature, prolonging its lifespan, enhancing fuel efficiency, and reducing the risk of costly repairs. - [After-Sales Support] Backed by a lifetime warranty, the LPD47391 cooler offers peace of mind. Our dedicated support team is available anytime to assist with any issues, ensuring your satisfaction. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D99MDZ1X | | Brand | Lucky Seven | | Customer Reviews | 4.0 4.0 out of 5 stars (126) | | Date First Available | 31 July 2024 | | Exterior | Brushed | | Item Weight | 113 g | | Item model number | LPD47391 40k | | Manufacturer | 40k Transmission Oil Cooler | | Manufacturer part number | LPD47391 40k | | Model | 40k Transmission Oil Cooler | | Product Dimensions | 10.16 x 7.62 x 7.62 cm; 113.4 g | ## Images ![40k Transmission Oil Cooler lpd47391 - Image 1](https://m.media-amazon.com/images/I/81S0F4hZs5L.jpg) ![40k Transmission Oil Cooler lpd47391 - Image 2](https://m.media-amazon.com/images/I/71Jgv-DYCAL.jpg) ![40k Transmission Oil Cooler lpd47391 - Image 3](https://m.media-amazon.com/images/I/61aN2AQfSAL.jpg) ![40k Transmission Oil Cooler lpd47391 - Image 4](https://m.media-amazon.com/images/I/81Vx5iGeasL.jpg) ![40k Transmission Oil Cooler lpd47391 - Image 5](https://m.media-amazon.com/images/I/81QoITPi5bL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good price lasting quality *by B***N on 11 January 2026* Had this trans cooler on my truck for at least 6 months now and it has not given my a sing issue. The install was simple. I installed this on my 99 Silverado for my built 4l60e and have seen my trans temps stay low even after doing hard pulls. Amazing price and quality ### ⭐ AVOID THE LINES IT COMES WITH *by E***K on 2 April 2026* The cooler itself amazing but the lines are horrible the first time the line popped i thought i installed it wrong took it to a shop they used the same line and as i was driving i did not notice the line popped leaving the shop until my truck started idling after trying to speed up causing my transmission to messs up i ordered new lines good one and hope this doesn’t mess anyone else transmisson up avoid the line it comes with dont put it on even just to test it i ended up waisting way more just for trusting this line ### ⭐⭐⭐⭐⭐ Good *by O***R on 7 May 2026* Good quality aluminum trans cooler. Use this on all my vehicles & have never had a issue ## Frequently Bought Together - 40k Transmission Oil Cooler LPD47391, Heavy Duty 40,000 GVW Max, Low Pressure Drop, Compatible with Tru-Cool,Includes Mounting Hardware-Ideal for Heavy Vehicles,40,000 GVW transmission cooler (Silver) - EVIL ENERGY 6AN Male to 5/8 x 18 Inverted Flare Thread Fitting Adapter Straight 2Pcs - EVIL ENERGY 6AN Fuel Line Kit, 6AN Nylon Braided Fuel Line Hose Fitting Kit CPE 20FT Black --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.za/products/781059632-40k-transmission-oil-cooler-lpd47391](https://www.desertcart.co.za/products/781059632-40k-transmission-oil-cooler-lpd47391) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-06-26*