---
product_id: 103238652
title: "Tru Cool LPD4921 TRU COOL MAX, W/BYPASS (34000"
brand: "transmaxx"
price: "$49.54"
currency: USD
in_stock: true
reviews_count: 1
url: https://www.desertcart.us/products/103238652-tru-cool-lpd4921-tru-cool-max-w-bypass-34000
store_origin: US
region: United States of America
---

# 15X less flow restriction 30% more cooling Durable aluminum construction Tru Cool LPD4921 TRU COOL MAX, W/BYPASS (34000

**Brand:** transmaxx
**Price:** $49.54
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Cool Under Pressure!

## Quick Answers

- **What is this?** Tru Cool LPD4921 TRU COOL MAX, W/BYPASS (34000 by transmaxx
- **How much does it cost?** $49.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/103238652-tru-cool-lpd4921-tru-cool-max-w-bypass-34000)

## Best For

- transmaxx enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from durable brazed aluminum for long-lasting reliability.
- • **Revolutionary Design:** Plate-style cooler outperforms traditional tube-and-fin designs.
- • **Unmatched Efficiency:** Experience up to 15X less flow restriction for optimal performance.
- • **Smart Flow Management:** Self-regulating flow ensures protection under all driving conditions.
- • **Superior Cooling Power:** Achieve 30% more cooling for maximum heat transfer.

## Overview

The Tru Cool LPD4921 TRU COOL MAX is a state-of-the-art plate-style cooler designed to deliver superior cooling performance and efficiency. With a compact design that minimizes flow restriction and maximizes heat transfer, this cooler is built from durable brazed aluminum and features self-regulating flow for optimal protection in various driving conditions. Trusted by 9 out of 10 new vehicle installations, it’s the go-to choice for serious drivers.

## Description

Tru-Cool Max LPD4921 Automatic Transmission Cooler 30000 GVW (MAX FIN & PLATE)

## Features

- Plate-style cooler outperforms old tube-and-fin designs in a smaller overall size
- Delivers up to 15X less flow restriction
- 30% more cooling delivers maximum heat transfer
- Durable brazed aluminum construction
- Self-regulating flow for maximum lube flow protection through cold start-up, varied temperatures and driving conditions, heavy loads and towing
- Long Coolers, an OEM subsidiary of the Dana Corporation, are specified Original Equipment in 9 out of 10 new vehicle installations
- The thermal bypass starts to open at 180° F, and is fully open at 205° F.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Transmaxx |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | TMXLPD4921 |

## Images

![Tru Cool LPD4921 TRU COOL MAX, W/BYPASS (34000 - Image 1](https://m.media-amazon.com/images/I/51HcbluRdeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product - needed to make my own brackets.
*by A***N on April 28, 2022*

Good product - needed to make my own brackets which was known before purchase.

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**Shop now:** [https://www.desertcart.us/products/103238652-tru-cool-lpd4921-tru-cool-max-w-bypass-34000](https://www.desertcart.us/products/103238652-tru-cool-lpd4921-tru-cool-max-w-bypass-34000)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-24*