--- product_id: 1279924 title: "Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass" brand: "tru-cool" price: "¥67839" currency: JPY in_stock: true category: "Tru Cool" url: https://www.desertcart.jp/products/1279924-tru-cool-max-lpd4739-4739-40-000-gvw-low-pressure store_origin: JP region: Japan --- # Low Pressure Drop tech for fluid flow 40,000 GVW cooling capacity Thermal bypass for quick warm-up Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass **Brand:** tru-cool **Price:** ¥67839 **Availability:** ✅ In Stock ## Summary > 🌟 Keep your transmission cool, your ride smooth, and your towing game unbeatable! ## Quick Answers - **What is this?** Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass by tru-cool - **How much does it cost?** ¥67839 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/1279924-tru-cool-max-lpd4739-4739-40-000-gvw-low-pressure) ## Best For - tru-cool enthusiasts ## Why This Product - Trusted tru-cool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Rugged construction engineered for commercial vehicles, RVs, and heavy towing reliability. - • **Optimized Fluid Flow:** Advanced Low Pressure Drop design ensures peak transmission performance without flow restriction. - • **Extend Transmission Life:** Maintains consistent operating temps to prevent overheating and costly repairs. - • **Heavy-Duty Cooling Power:** Handles up to 40,000 GVW for superior heat dissipation under extreme towing conditions. - • **Smart Thermal Management:** Integrated thermal bypass valve accelerates warm-up and protects transmission longevity. ## Overview The Max LPD4739 is a high-capacity transmission oil cooler designed for heavy-duty vehicles up to 40,000 GVW. Featuring Low Pressure Drop technology and an integrated thermal bypass valve, it optimizes fluid flow and thermal management to extend transmission life. Built tough for demanding towing and commercial use, it prevents overheating and fluid breakdown, ensuring reliable performance even in extreme conditions. ## Description International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. ## Features - High Capacity Cooling: Designed to handle up to 40,000 GVW (Gross Vehicle Weight), this transmission oil cooler delivers exceptional heat dissipation performance for heavy-duty vehicles, trucks, and towing applications where thermal management is critical - Low Pressure Drop Technology: Features advanced LPD (Low Pressure Drop) design that maintains optimal transmission fluid flow while providing superior cooling efficiency, ensuring your transmission operates at peak performance without restricting fluid circulation - Integrated Thermal Bypass: Equipped with a built-in thermal bypass valve that allows transmission fluid to warm up quickly during cold starts, then automatically directs flow through the cooler once optimal operating temperature is reached for enhanced transmission longevity - Heavy-Duty Construction: Built with durable materials and robust engineering to withstand demanding conditions, providing reliable cooling protection for transmissions in commercial vehicles, RVs, and heavy towing scenarios - Enhanced Transmission Protection: Helps prevent transmission overheating and fluid breakdown by maintaining consistent operating temperatures, extending the life of your transmission and reducing the risk of costly repairs from heat-related damage ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00803CTDA | | Best Sellers Rank | #320,157 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Automatic Transmission Assemblies | | Brand | Tru-Cool | | Customer Reviews | 4.4 4.4 out of 5 stars (228) | | Date First Available | May 3, 2012 | | Item Weight | 1.76 ounces | | Item model number | 4739 | | Manufacturer | Long Tru-Cool | | Manufacturer Part Number | 39981 | | Product Dimensions | 26 x 10 x 3 inches | ## Images ![Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass - Image 1](https://m.media-amazon.com/images/I/713izRI3-AL.jpg) ## Questions & Answers **Q: i want to use this on a 2007 pontiac grand prix GXP 5.3 v8 with the 4t65e-hd transmission. line fittings come with unit?** A: It comes with generic fittings and hose clamps. I have an '05 Silverado with 5.3 and used hose clamps to factory auxiliary cooler lines. **Q: Has anyone used this model on a 2018 Tahoe ? Will it fit?** A: This is a universal kit, but I mounted it on my 2011 Silverado **Q: does this fit 2017 altima??** A: I believe if you check the dimensions it probably won't fit. Otherwise it would work. You will have to check demensions with a tape measure. **Q: Is there any reason you can't mount this upside down (with fittings toward the ground)?** A: I mounted it fittings down without a thermal bypass(the thermal bypass never seemed to open) and it has work great tranny temp stays around 140-180 depending on outside temp. If you are using the thermal bypass I would say it needs to be mounted with fittings up otherwise your fluid level in the transmission will be higher than recommended due to fluid draining back into the transmission until the thermal bypass opens and allows fluid to flow through the cooler. ## Frequently Bought Together - Tru-Cool Max LPD4739 4739 40,000 GVW Low Pressure Drop Transmission Oil Cooler with Thermal Bypass - Hayden Automotive 397 Transmission Line Fitting Kit - Hayden Automotive 106 Transmission Oil Cooler Hose 3/8-IN Diameter x 4.5-FT Length --- ## 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.jp/products/1279924-tru-cool-max-lpd4739-4739-40-000-gvw-low-pressure](https://www.desertcart.jp/products/1279924-tru-cool-max-lpd4739-4739-40-000-gvw-low-pressure) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-11*