---
product_id: 256678214
title: "TRU-COOL MAX 40K - LPD47391"
brand: "transmission oil cooler"
price: "$0.66"
currency: USD
in_stock: false
reviews_count: 1
url: https://www.desertcart.us/products/256678214-tru-cool-max-40k-lpd47391
store_origin: US
region: United States of America
---

# Durable aluminum build 2x cooling power Optimal transmission protection TRU-COOL MAX 40K - LPD47391

**Brand:** transmission oil cooler
**Price:** $0.66
**Availability:** ❌ Out of Stock

## Summary

> ❄️ Stay Cool, Drive Confident: The Ultimate Transmission Armor

## Quick Answers

- **What is this?** TRU-COOL MAX 40K - LPD47391 by transmission oil cooler
- **How much does it cost?** $0.66 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/256678214-tru-cool-max-40k-lpd47391)

## Best For

- transmission oil cooler enthusiasts

## Why This Product

- Trusted transmission oil cooler brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extend Vehicle Lifespan:** Lower transmission temps mean less wear—protect your investment and drive worry-free.
- • **Precision Fin Separator:** Engineered for maximum airflow and heat dissipation to maintain peak performance.
- • **Double the Cooling Power:** Keep your transmission running cooler and longer with twice the efficiency of standard coolers.
- • **Complete Cold Weather Kit:** Includes remote cooler and mounting hardware so you’re ready for any climate challenge.
- • **Rugged Aluminum Construction:** Built tough with solid aluminum and backed by a lifetime warranty for lasting reliability.

## Overview

The TRU-COOL MAX 40K (LPD47391) is a high-performance auxiliary transmission oil cooler delivering double the cooling efficiency of standard models. Crafted from durable solid aluminum with a precision fin separator, it ensures optimal airflow and temperature control to extend your vehicle’s transmission life. Complete with cold weather remote and mounting hardware, it offers professional-grade protection backed by a lifetime warranty.

## Description

TruCoolMax provides optimal protection with twice the cooling performance of our other products. Keep the temperature low in your transmission and lubricant with TrueCool and extend the life of the vehicle you rely on. Drive the hard drive. Relax easily. Get the OE advantage that comes from an LPD TrueCool transmission oil cooler as well as proven cooling that can help you protect your investment and warranties. - Double the cooling performance of LPD Tru-Cool - Durable solid aluminum construction with lifetime warranty - Precision fin separator for efficient airflow and cooling - Includes cold weather remote and mounting hardware

## Features

- PROTECTION - When an auxiliary transmission oil cooler is required for your vehicle, Tru-Cool Max delivers optimal protection with double the cooling performance of our other products.
- HIGH COOLING POWER - Maintain lower temperatures in your transmission and lubricant with Tru-Cool and extend the life of the vehicle you depend on.
- PROTECTION - When an auxiliary transmission oil cooler is required for your vehicle Tru-Cool Max delivers optimal protection with double the cooling performance of our other products
- HIGH COOLING POWER - Maintain lower temperatures in your transmission and lubricant with Tru-Cool and extend the life of the vehicle you depend on

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | TRANSMISSION OIL COOLER |
| Package Dimensions | 71.37 x 24.38 x 7.11 cm; 50 g |
| Item model number | LPD47391 |
| Manufacturer Part Number | 47391 |
| Item Weight | 50 g |

## Images

![TRU-COOL MAX 40K - LPD47391 - Image 1](https://m.media-amazon.com/images/I/71ccMbz-LYL.jpg)

## Questions & Answers

**Q: "low pressure drop" what does it mean or whats the difference between this and a regular cooler?**
A: I'm not completely sure, but I think the LPD refers to the pressure difference going in and coming out of the cooler. Automatic transmissions use a certain line pressure to operate the mechanical spool valves in the valve body, so a large pressure drop would cause incorrect shifting. I used this cooler in my 1500 GMC pickup because I have a modified performance trans and it gets up to 120 here in the summer. It definitely seems to be helping. A LOT of the GMC/Chevy performance guys run this cooler. I would definitely recommend it.

**Q: I want to install this on a 2009 ford f250 power stroke diesel 6.4L. Does this have large enough tubing to work? If not do you have a recommendation?**
A: I installed this on a 2003 F350 7.3L and it fit perfect and does a great job keeping my tranny cool.  You can install any size brass fitting that you need to match your hose size.  It was a quick and easy install on my 2003.  I put it behind my grill in front of all of the other coolers, condenser and radiator.  The tubing is large enough to handle your needs.  I think it is the best after market cooler you can get.

**Q: which has dimensions**
A: I don't know the dimension, but I put it on my 2001 chevy silverado 5.3 Z71 and I've pulled my toy hauler thats dry weight is 6300 pounds from Cali to New Mexico pass thru the Grand Canyon and climb about 8,000 elevation with no problem, in other words it works great.

**Q: Will it fit on Escalade 2002 6.0 ?**
A: I installed one on a 2002 escalade, you need to use the brackets to make it fit and move the temp snesor over some. but its doable for a novice.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best cooler for gm trucks and suv
*by M***I on 29 July 2019*

That is the cheapest price in the market 👍🏻

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-07*