---
product_id: 715206384
title: "TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105"
brand: "trq"
price: "€ 80.02"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.sk/products/715206384-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2003
store_origin: SK
region: Slovakia
---

# Compatible with 2003-08 Mazda 6 Pre-assembled for quick install Direct-fit OEM replacement TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105

**Brand:** trq
**Price:** € 80.02
**Availability:** ✅ In Stock

## Summary

> 🚗 Keep your Mazda cool and your ride smoother than ever!

## Quick Answers

- **What is this?** TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 by trq
- **How much does it cost?** € 80.02 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/715206384-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2003)

## Best For

- trq enthusiasts

## Why This Product

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

## Key Features

- • **DIY Confidence Boost:** Backed by TRQ’s extensive DIY video library—view before you do and fix like a pro.
- • **Seamless OEM Fitment:** Engineered to match original specs for a flawless, no-modification install.
- • **Trusted Compatibility:** Perfectly designed for Mazda 6 models from 2003 to 2008, ensuring peace of mind.
- • **Time-Saving Pre-Assembly:** Arrives ready to install, cutting down your repair time significantly.
- • **Cap Included for Convenience:** Comes with a secure cap to maintain optimal coolant pressure and system integrity.

## Overview

The TRQ Radiator Coolant Reservoir Expansion Tank is a direct-fit, pre-assembled replacement part compatible with 2003-2008 Mazda 6 2.3L engines. Made from durable plastic and including a cap, it ensures reliable coolant overflow management. TRQ’s trusted brand offers easy installation supported by a vast DIY video library, making it the go-to choice for efficient, professional-grade vehicle maintenance.

## Description

Coolant ReservoirFitmentCompatible with: 2003-05 Mazda 6 L4 2.3LCompatible with: 2006-07 Mazda 6 L4 2.3L Naturally AspiratedCompatible with: 2008 Mazda 6 L4 2.3LProduct AttributesPressurized: NoMounting Hardware Included: NoLevel Sensor Included: NoMaterial: PlasticCap Included: YesReference NumbersL321-15-350L32115350L327-15-351BL32715351BMA3014105

## Features

- Reference Number(s): MA3014105; L321-15-350; L32115350; L327-15-351B; L32715351B
- YOUR TRUSTED DIY VIDEO SOURCE: TRQ offers the largest catalog of DIY videos for replacement parts, making installation easier and repairs more accessible. Our mission is to help you "View Before You Do," with hundreds of new videos added weekly.
- TRUST & COMPATIBILITY: For over 25 years, TRQ has been the premium choice for direct-fit replacement parts. Confirm fitment with the desertcart Garage "confirmed fit" feature and review our full compatibility chart below before purchase.
- EASE OF INSTALLATION: Save time and effort with pre-assembled components designed as direct replacements for the original equipment, ensuring precise fit and eliminating the need for modifications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | TRQ |
| Brand | TRQ |
| Model | TRQ ECA62906 Coolant Reservoir |
| Item Weight | 1.15 pounds |
| Package Dimensions | 8.75 x 8.45 x 8.25 inches |
| Item model number | ECA62906 |
| Exterior | Machined |
| Manufacturer Part Number | ECA62906 |

## Images

![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 - Image 1](https://m.media-amazon.com/images/I/51OmjTAuAbL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 - Image 2](https://m.media-amazon.com/images/I/71AmODWbhUL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 - Image 3](https://m.media-amazon.com/images/I/51No5h-Co-L.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 - Image 4](https://m.media-amazon.com/images/I/51q9cLjOKOL.jpg)
![TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105 - Image 5](https://m.media-amazon.com/images/I/51Ycw0pdVgL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome Part , And Awesome Price also quick delivery
*by G***D on May 13, 2025*

It was a perfect fit in my 2010 Lexus RX350 . And the cost awesome here on Amazon cause the dealership wanted a $125.00 for the same part . And is was a good value for my money . And Easing to install in matter of minutes also it is Durability. Heat level . And another thing it was a very quickly delivered and if I needed another one I will buy it again great price and product

### ⭐⭐⭐⭐⭐ Perfect replacement
*by W***2 on June 20, 2025*

Was a direct fit replacement. Great build quality. This versus OEM I saw no differences and this one was 2/3 of the price. I did test with straight water and a pressure kit no issues. Unfortunately never actually had the opportunity to install it because the car got hit and their insurance ended up just totaling it out. Ended up returning this but will always buy trq parts. As close to OEM as you can get without the price

### ⭐⭐⭐⭐⭐ Fitment
*by T***E on September 17, 2025*

Fit like an oem glove on a 2016 1500 BigHorn

## Frequently Bought Together

- TRQ Radiator Coolant Reservoir Expansion Tank Overflow Bottle Compatible with 2003-2008 Mazda 6 MA3014105
- ACDelco Professional 252-721 Water Pump Kit
- Gates 33329 OE Type Engine Coolant Thermostat

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.sk/products/715206384-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2003](https://www.desertcart.sk/products/715206384-trq-radiator-coolant-reservoir-expansion-tank-overflow-bottle-compatible-2003)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-04*