---
product_id: 616839527
title: "1645000049 Engine Coolant Reservoir Tank w/ Sensor & Cap Compatible with 2006 - 2015 Mercedes-Benz GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML550, ML63 AMG, SLS AMG. Replaces# 603-256"
brand: "ppnzqaut"
price: "₨35849"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/616839527-1645000049-engine-coolant-reservoir-tank-w-sensor-and-cap-compatible
store_origin: LK
region: Sri Lanka
---

# Durable, long-lasting construction Maintains optimal engine temperature Precision fit for Mercedes models 1645000049 Engine Coolant Reservoir Tank w/ Sensor & Cap Compatible with 2006 - 2015 Mercedes-Benz GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML550, ML63 AMG, SLS AMG. Replaces# 603-256

**Brand:** ppnzqaut
**Price:** ₨35849
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your Mercedes cool, calm, and collected—because overheating is so last season!

## Quick Answers

- **What is this?** 1645000049 Engine Coolant Reservoir Tank w/ Sensor & Cap Compatible with 2006 - 2015 Mercedes-Benz GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML550, ML63 AMG, SLS AMG. Replaces# 603-256 by ppnzqaut
- **How much does it cost?** ₨35849 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/616839527-1645000049-engine-coolant-reservoir-tank-w-sensor-and-cap-compatible)

## Best For

- ppnzqaut enthusiasts

## Why This Product

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

## Key Features

- • **Robust Durability:** Crafted from premium materials for long-lasting performance that withstands daily driving demands.
- • **Aftermarket Excellence:** High-quality aftermarket alternative that matches OEM fit and function without the premium price tag.
- • **Easy Swap Installation:** Designed for straightforward replacement—just disconnect, remove, and install. Professional installation recommended for peace of mind.
- • **Seamless Compatibility:** Engineered to perfectly fit 2006-2015 Mercedes GL & ML series plus AMG models, ensuring hassle-free replacement.
- • **Engine Temperature Guardian:** Effortlessly manages coolant expansion and contraction to keep your engine running cool under pressure.

## Overview

This aftermarket coolant reservoir tank with sensor and cap is a direct-fit replacement for select 2006-2015 Mercedes-Benz GL, ML, and AMG models. It ensures optimal engine temperature regulation by providing a reliable expansion space for coolant, crafted from durable materials for long-lasting performance. Easy to install and engineered to OEM specifications, it’s the smart upgrade for maintaining your vehicle’s cooling system efficiency.

## Description

1645000049 Engine Coolant Reservoir Tank w/ Sensor & Cap Compatible with 2006 - 2015 Mercedes-Benz GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML550, ML63 AMG, SLS AMG. Replaces# 603-256

## Features

- What Does a Coolant Reservoir Do? - A coolant reservoir is a small plastic tank that is connected to the radiator of a car’s cooling system. Its primary function is to provide a space for excess coolant to expand and contract as the engine heats up and cools down. Keep the engine operating at a normal temperature.
- Part Numbers - 1645000049, 603-256, 603256, 164500004928. The radiator surge tank matches the fit and function of the original part. This is NOT a genuine part, it's an aftermarket replacement part.
- Compatible with Select Mercedes-Benz Models - This radiator overflow tank is compatible with 2011 - 2015 C63 AMG, 2007 - 2009 GL320, 2010 - 2012 GL350, 2007 - 2012 GL450, 2008 - 2012 GL500, 2008 - 2012 GL550, 2007 - 2009 ML320, 2006 - 2012 ML350, 2010 - 2011 ML450, 2006 - 2015 ML500, 2008 - 2015 ML550, 2007 - 2011 ML63 AMG, 2011 - 2015 SLS AMG. Please check the description or enter Year/Make/Model on desertcart's Fitment Filter system to confirm your compatibility.
- Replacement Instruction - Turn off and cool down the car, disconnect the drain line, remove the retaining bolts and swap in the new reservoir tank. Professional installation is highly recommended.
- Durable and Long Lasting - This Coolant Recovery Tank is manufactured from quality materials, durable and long lasting. It is thoroughly tested to ensure optimum fit and performance on specific vehicle applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Product Grade | Replacement Part |
| OEM Part Number | 603-256 |
| Manufacturer | PPNZQAUT |
| Model | Coolant Radiator Reservoir |
| Item Weight | 1.93 pounds |
| Package Dimensions | 11.89 x 9.21 x 7.28 inches |
| Item model number | 1645000049 |
| Manufacturer Part Number | 1645000049 |
| Position | Front |

## Product Details

- **Brand:** PPNZQAUT
- **Material:** Plastic
- **Exterior Finish:** Machined
- **Vehicle Service Type:** Car
- **Item Weight:** 0.88 Kilograms

## Images

![1645000049 Engine Coolant Reservoir Tank w/ Sensor & Cap Compatible with 2006 - 2015 Mercedes-Benz GL320, GL350, GL450, GL550, ML320, ML350, ML450, ML550, ML63 AMG, SLS AMG. Replaces# 603-256 - Image 1](https://m.media-amazon.com/images/I/61F062h6j+L.jpg)

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**Shop now:** [https://www.desertcart.lk/products/616839527-1645000049-engine-coolant-reservoir-tank-w-sensor-and-cap-compatible](https://www.desertcart.lk/products/616839527-1645000049-engine-coolant-reservoir-tank-w-sensor-and-cap-compatible)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-05*