---
product_id: 344415087
title: "3mirrors Allison Transmission Cooler Lines & Fittings Adapters Heavy Duty, Braided Hose Compatible with GM GMC Chevy LBZ LMM Allison Duramax Transmission Lines(2006-2010)"
brand: "3mirrors"
price: "$290.67"
currency: USD
in_stock: true
reviews_count: 7
url: https://www.desertcart.us/products/344415087-3mirrors-allison-transmission-cooler-lines-and-fittings-adapters-heavy-duty
store_origin: US
region: United States of America
---

# 840 PSI working pressure Temp range -40°F to 257°F Multi-layer oil-resistant protection 3mirrors Allison Transmission Cooler Lines & Fittings Adapters Heavy Duty, Braided Hose Compatible with GM GMC Chevy LBZ LMM Allison Duramax Transmission Lines(2006-2010)

**Brand:** 3mirrors
**Price:** $290.67
**Availability:** ✅ In Stock

## Summary

> 🚗 Cool under pressure, tough on performance.

## Quick Answers

- **What is this?** 3mirrors Allison Transmission Cooler Lines & Fittings Adapters Heavy Duty, Braided Hose Compatible with GM GMC Chevy LBZ LMM Allison Duramax Transmission Lines(2006-2010) by 3mirrors
- **How much does it cost?** $290.67 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/344415087-3mirrors-allison-transmission-cooler-lines-and-fittings-adapters-heavy-duty)

## Best For

- 3mirrors enthusiasts

## Why This Product

- Trusted 3mirrors brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Perfect OEM Compatibility:** Specifically designed for 2006-2010 GM Chevy GMC 6.6L LBZ LMM Duramax Allison transmissions—plug and play confidence.
- • **Unmatched Thermal Endurance:** Withstands extreme temps from -40°F to 257°F, keeping your transmission cool under pressure.
- • **Heavy-Duty Pressure Resistance:** Engineered for 840 PSI working pressure and a burst pressure up to 3360 PSI—built to outlast the toughest drives.
- • **Premium Multi-Layer Construction:** Oil-resistant synthetic rubber and anti-textile braid layers ensure durability and leak-free performance.
- • **Upgrade Your Ride’s Reliability:** Say goodbye to leaks and overheating with a transmission cooler line that professionals trust.

## Overview

3mirrors Allison Transmission Cooler Lines & Fittings Adapters are heavy-duty, braided hose assemblies designed exclusively for 2006-2010 GM Chevy GMC 6.6L LBZ LMM Duramax Allison transmissions. Featuring a wide continuous service temperature range (-40°F to 257°F) and exceptional pressure ratings (840 PSI working, 3360 PSI burst), these lines combine multi-layer oil-resistant synthetic rubber and anti-textile braid for superior durability and leak resistance, ensuring optimal transmission cooling and reliability on demanding drives.

## Description

Buy 3mirrors Allison Transmission Cooler Lines & Fittings Adapters Heavy Duty, Braided Hose Compatible with GM GMC Chevy LBZ LMM Allison Duramax Transmission Lines(2006-2010): Cooling Lines - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works great no leaks. - Installed about 3 months ago on my 2012 chevy 2500 duramax. All the parts were included, nothing missing. Took longer getting the old aluminum lines out then it did installing these blindly. Highly recommend.
Review: 06 duramax. Leaking already… - Poor product. They started leaking 2 days of driving. Not at the fitting either but out of where the hose part enters the metal. Both hoses are leaking at the Radiator.

## Features

- Suitable for 2006-2010 GM Chevy GMC with 6.6L LBZ LMM duramax diesel engine, only for allison transmission.
- The CONTINUOUS SERVICE TEMPERATURE RANGE is -40 °F / 257 °F (-40 °C / 125 °C). 58 Bar / 840 PSI working pressure; 232 Bar / 3,360 PSI Min burst pressure
- Multi-layer protection, oil-resistant synthetic rubber on the inside of the tubing, a layer of anti-textile braid in the middle, and a durable synthetic rubber on the outside to protect the hose from wear
- Strong resistance to high pressure. After the oil is fully heated, Duramax will not exceed 300 psi at worst. This hose can withstand a working pressure of 840 psi and a burst pressure of 3360 psi. Far beyond our requirements
- With strong resistance to high temperature, the transmission of the driving vehicle will get warmer, and the temperature will be very high. Our hose temperature range is -40°F/257°F (-40°C/125°C). Usually high-pressure-resistant pipes cannot withstand high temperatures. Exceeding the temperature will lead to a sudden reduction in life

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RYPQ7QL |
| Best Sellers Rank | #1,478,095 in Automotive ( See Top 100 in Automotive ) #783 in Automotive Replacement Transmission Cooling Lines |
| Brand | 3mirrors |
| Customer Reviews | 3.7 3.7 out of 5 stars (15) |
| Date First Available | January 4, 2021 |
| Item Weight | 6.6 pounds |
| Item model number | 13058GM01 |
| Manufacturer | 3mirrors |
| Manufacturer Part Number | 13058GM03 |
| OEM Part Number | 20759972, 20759973, 20835123, 20835125, 20835127, 20759971, 21998956 |
| Package Dimensions | 13.15 x 12.87 x 3.58 inches |

## Product Details

- **Brand:** 3mirrors
- **Color:** Black
- **Item Weight:** 3 Kilograms
- **Manufacturer:** 3mirrors
- **Material:** Synthetic,Synthetic Rubber,Rubber
- **Maximum Pressure:** 3360 Pound per Square Inch

## Images

![3mirrors Allison Transmission Cooler Lines & Fittings Adapters Heavy Duty, Braided Hose Compatible with GM GMC Chevy LBZ LMM Allison Duramax Transmission Lines(2006-2010) - Image 1](https://m.media-amazon.com/images/I/71CSCOR7GvS.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great no leaks.
*by M***T on December 5, 2024*

Installed about 3 months ago on my 2012 chevy 2500 duramax. All the parts were included, nothing missing. Took longer getting the old aluminum lines out then it did installing these blindly. Highly recommend.

### ⭐ 06 duramax. Leaking already…
*by W***S on February 21, 2025*

Poor product. They started leaking 2 days of driving. Not at the fitting either but out of where the hose part enters the metal. Both hoses are leaking at the Radiator.

### ⭐⭐⭐⭐ Does the job
*by C***D on November 12, 2024*

Does what it needs to do. Only complaint is that it's hard to get any tools on the fitting to the radiator. But not sure if it can even be avoided

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-23*