---
product_id: 123158683
title: "Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L"
brand: "gpp"
price: "€ 67.01"
currency: EUR
in_stock: false
reviews_count: 8
url: https://www.desertcart.gr/products/123158683-heavy-duty-upgraded-allison-transmission-cooler-lines-2001-2005-gm
store_origin: GR
region: Greece
---

# Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L

**Brand:** gpp
**Price:** € 67.01
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L by gpp
- **How much does it cost?** € 67.01 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/123158683-heavy-duty-upgraded-allison-transmission-cooler-lines-2001-2005-gm)

## Best For

- gpp enthusiasts

## Why This Product

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

## Description

Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L

Review: Way better than stock! - Only critiques, one hose from trans to cooler is too long. Creative routing and use of different angle fittings solved the issue. And would be more compact and fewer potential leak points with proper angled crimp-on hose fittings but hey, you cannot BUILD these to custom fit at THIS price! OHHH! AND I had to FABRICATE the correct RADIATOR COOLER ADAPTERS by cutting off the AN nipple from 2 straight fittings and TIG WELD them to the OEM hose adapters as what was in the kit would not work! 2005 Ext cab long-bed 4x4 6.6 Dmax w/ 5 speed Allison.
Review: No instructions - No instructions but holding up ok so far. Seemed like decent hoses

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Q4R4256 |
| Brand | GPP |
| Brand Name | GPP |
| Color | Black |
| Customer Reviews | 3.9 out of 5 stars 53 Reviews |
| Manufacturer | GPP |
| Material | Alloy Steel , Aluminum |
| Material Type | Alloy Steel, Aluminum |
| UPC | 797132130414 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** GPP
- **Color:** Black
- **Manufacturer:** GPP
- **Material:** Alloy Steel, Aluminum
- **Specific Uses For Product:** Vehicle Cooling Systems, Diesel Engine Maintenance
- **UPC:** 797132130414
- **Unit Count:** 1 Count

## Images

![Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L - Image 1](https://m.media-amazon.com/images/I/81oW2aFwalL.jpg)
![Heavy Duty Upgraded Allison Transmission Cooler Lines 2001-2005 GM Chevy GMC Duramax Diesel 6.6L - Image 2](https://m.media-amazon.com/images/I/7181juygBqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Way better than stock!
*by T***S on October 4, 2024*

Only critiques, one hose from trans to cooler is too long. Creative routing and use of different angle fittings solved the issue. And would be more compact and fewer potential leak points with proper angled crimp-on hose fittings but hey, you cannot BUILD these to custom fit at THIS price! OHHH! AND I had to FABRICATE the correct RADIATOR COOLER ADAPTERS by cutting off the AN nipple from 2 straight fittings and TIG WELD them to the OEM hose adapters as what was in the kit would not work! 2005 Ext cab long-bed 4x4 6.6 Dmax w/ 5 speed Allison.

### ⭐⭐⭐⭐ No instructions
*by A***R on May 6, 2021*

No instructions but holding up ok so far. Seemed like decent hoses

### ⭐⭐⭐⭐⭐ Instructions how to install transmission cooler lines.
*by G***O on March 7, 2024*

Great product to replace your transmission cooler lines. I would change the orings a bit bigger on the fitting that install from the radiator, top and bottom. The original orings on this product was not sitting in right was leaking, remove and replace thicker oring stopped the leak.

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---

*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-11-02*