---
product_id: 708333326
title: "40k Transmission Oil Cooler lpd47391"
brand: "lucky seven"
price: "€ 173.63"
currency: EUR
in_stock: true
reviews_count: 5
category: "Lucky Seven"
url: https://www.desertcart.pt/products/708333326-40k-transmission-oil-cooler-lpd47391
store_origin: PT
region: Portugal
---

# Complete mounting hardware included 40,000 lbs GVW capacity Low pressure drop cooling tech 40k Transmission Oil Cooler lpd47391

**Brand:** lucky seven
**Price:** € 173.63
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your transmission chill and your fleet winning!

## Quick Answers

- **What is this?** 40k Transmission Oil Cooler lpd47391 by lucky seven
- **How much does it cost?** € 173.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/708333326-40k-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

- • **Heavy-Duty Cooling Power:** Engineered for trucks & trailers up to 40,000 lbs GVW—keep your rig running cooler under pressure.
- • **Plug & Play Installation:** Includes all bolts, fasteners, and brackets for a hassle-free, secure fit—get back on the road faster.
- • **Prolongs Transmission Life:** Maintains optimal temps to extend transmission lifespan and slash costly repair risks.
- • **Lifetime Warranty & Support:** Backed by a lifetime warranty and dedicated support team—drive with confidence and peace of mind.
- • **Maximized Transmission Efficiency:** Advanced low-pressure drop design reduces energy loss and system strain for peak performance.

## Overview

The Lucky Seven LPD47391 40k Transmission Oil Cooler is a robust cooling solution designed for heavy-duty vehicles up to 40,000 lbs GVW. Featuring advanced low-pressure drop technology, it optimizes transmission efficiency by minimizing energy loss and heat buildup. The kit comes complete with all necessary mounting hardware for straightforward installation. Built to extend transmission life and backed by a lifetime warranty, it’s the smart choice for professionals demanding reliable, high-performance cooling.

## Description

40k Transmission Oil Cooler lpd47391 Compatible with tru cool Heavy Duty 40,000 GVW Max - low pressure drop trans cooler

Review: 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: The Cooler developed a leak about 8 months after i purchased it, or about 15,000 miles. The leak isn't necessarily the reason why i'm writing this review, i'm writing this review because I messaged the seller trying to claim the warranty, and I did not hear back from the seller. I purchased this specific cooler for the lifetime warranty and it seems like I won't be claiming that anytime soon. Also, this is NOT from the tru cool brand, I already knew that when I purchased it however to those of you who are confused, it's not from tru cool.

## 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 | 3.9 3.9 out of 5 stars (102) |
| 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*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

### ⭐ Review
*by C***E on 13 January 2026*

The Cooler developed a leak about 8 months after i purchased it, or about 15,000 miles. The leak isn't necessarily the reason why i'm writing this review, i'm writing this review because I messaged the seller trying to claim the warranty, and I did not hear back from the seller. I purchased this specific cooler for the lifetime warranty and it seems like I won't be claiming that anytime soon. Also, this is NOT from the tru cool brand, I already knew that when I purchased it however to those of you who are confused, it's not from tru cool.

### ⭐⭐⭐⭐⭐ Review
*by B***S on 10 December 2025*

Works great! I put it in my Wife's 2018 tahoe as a replacement cooler after her transmission went out. i bypassed the AC condensor cooler that was originally installed. Runs 170 after long drive on highway.

## 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)
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---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-05*