---
product_id: 213369648
title: "Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)"
brand: "mastercool"
price: "HK$4631"
currency: HKD
in_stock: true
reviews_count: 8
url: https://www.desertcart.hk/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack
store_origin: HK
region: Hong Kong
---

# Fast evaporation Residue-free cleaning O-Ring safe formula Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)

**Brand:** mastercool
**Price:** HK$4631
**Availability:** ✅ In Stock

## Summary

> 🧽 Flush your A/C system like a pro—clean, fast, and flawless!

## Quick Answers

- **What is this?** Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon) by mastercool
- **How much does it cost?** HK$4631 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack)

## Best For

- mastercool enthusiasts

## Why This Product

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

## Key Features

- • **Safe on Seals:** O-Ring safe solvent protects sensitive parts without damage
- • **Deep Clean Power:** Effortlessly removes debris and sludge from A/C components for peak performance
- • **Quick-Dry Formula:** Evaporates rapidly to minimize downtime and speed up maintenance
- • **Made in USA Quality:** Trusted American manufacturing ensures consistent, high-grade solvent
- • **Non-Flammable & Non-Corrosive:** Engineered for professional use with maximum safety and reliability

## Overview

Mastercool 91049-128-4 is a professional-grade, solvent-based flush designed to quickly and effectively remove debris and sludge from A/C systems. It evaporates fast, leaves no residue, and is safe for O-Rings, making it ideal for maintaining optimal vehicle performance. Non-flammable and non-corrosive, this 4-pack of 1-gallon containers is proudly made in the USA.

## Description

• Effectively removes debris and sludge from A/C components • Solvent-based • Evaporates quickly • Leaves no residue • For professional use • O-Ring safe • Non-Flammable • Non-Corrosive • Flush any A/C system • Made in USA

## Features

- Effectively removes debris and sludge from A/C components
- Solvent-based
- Evaporates quickly
- Leaves no residue
- O-Ring safe

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mastercool |
| Brand | Mastercool |
| Model | 91049-128-4 |
| Item Weight | 11.29 pounds |
| Product Dimensions | 13 x 12 x 12 inches |
| Item model number | 91049-128-4 |
| Manufacturer Part Number | 91049-128-4 |
| Special Features | Residue Free |

## Product Details

- **Brand:** Mastercool
- **Item Form:** Wipe
- **Scent:** Unscented
- **Specific Uses For Product:** Air Conditioner
- **Material Feature:** Unscented

## Images

![Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon) - Image 1](https://m.media-amazon.com/images/I/71L3QRDcLUL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works
*by J***. on January 8, 2025*

Worked very well and saved money on the gal. Size

### ⭐⭐⭐⭐⭐ great product,  poor delivery
*by B***D on January 1, 2024*

great product, poor delivery, this stuff is basically alcohol and acetone with some other chemicals..., delivery gave it upside down and lost 1/4 that destroyed the box and neighbors in this complex didn't appreciate it, but not this company's fault, just the inept driver...

### ⭐⭐⭐⭐⭐ Works Fine
*by K***S on June 13, 2022*

I just flushed the lines and front Evap Core from a 2010 Dodge Grand Caravan. Fluid cleans well and evaporates fast. Evap Core was plugged, this flush broke through the plug very quickly. I didn't get any residual oily film like other users have reported. It did the job it's designed to do and did it well.

## Frequently Bought Together

- Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)
- Mastercool 69900 "Mastercleanse Flush Machine, 1 Pack
- Mastercool 69925 Multiple Flushing and Leak Test Adapter Kit for Flush Machine, 1 Pack

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**Shop now:** [https://www.desertcart.hk/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack](https://www.desertcart.hk/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-22*