---
product_id: 213369648
title: "Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)"
brand: "mastercool"
price: "₩912099"
currency: KRW
in_stock: true
reviews_count: 10
category: "Mastercool"
url: https://www.desertcart.kr/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack
store_origin: KR
region: South Korea
---

# Fast evaporation Non-flammable solvent O-Ring safe formula Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon)

**Brand:** mastercool
**Price:** ₩912099
**Availability:** ✅ In Stock

## Summary

> 🚀 Clean fast, flush smart — keep your A/C running like new!

## Quick Answers

- **What is this?** Mastercool 91049-128-4 Black/Yellow Flush Solvent, 4 Pack (1 Gallon) by mastercool
- **How much does it cost?** ₩912099 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/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 to protect your investment 🛡️
- • **Made in the USA:** Quality you can count on, proudly manufactured stateside 🇺🇸
- • **Residue-Free Finish:** Leaves zero oily film for a pristine system 🧼
- • **Professional Grade Power:** Trusted by pros for reliable, non-corrosive cleaning 🛠️
- • **Breaks Through Sludge Fast:** Flushes A/C components with lightning speed ⚡

## Overview

Mastercool 91049-128-4 Flush Solvent is a professional-grade, solvent-based cleaner designed to rapidly remove debris and sludge from A/C components. It evaporates quickly without leaving residue, is safe on O-Rings, non-flammable, and non-corrosive, ensuring effective and safe maintenance. Made in the USA, this 4-pack of 1-gallon containers is a trusted choice for automotive pros aiming for peak A/C performance.

## 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

Review: Works Fine - 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.
Review: It works - Worked very well and saved money on the gal. Size

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B015MXFVBC |
| Best Sellers Rank | #164,286 in Automotive ( See Top 100 in Automotive ) #77 in Air Conditioning Oils |
| Brand | Mastercool |
| Customer Reviews | 4.2 4.2 out of 5 stars (109) |
| Date First Available | July 29, 2015 |
| Item Weight | 11.29 pounds |
| Item model number | 91049-128-4 |
| Manufacturer | Mastercool |
| Manufacturer Part Number | 91049-128-4 |
| Model | 91049-128-4 |
| Product Dimensions | 13 x 12 x 12 inches |
| Special Features | Residue Free |

## Product Details

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

## 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

### ⭐⭐⭐⭐⭐ 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.

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

Worked very well and saved money on the gal. Size

### ⭐⭐⭐ Hard to remove.
*by A***R on June 21, 2025*

Used this product and did nitrogen flush on an older line set that ran to the attic. It did clean but it’s very hard to remove it out of the lines and get it fully dry. Even after flushing, blowing out lines with nitrogen I could not get my microns under 1600. Ran half of my nitrogen bottle through the outflow line to the supply with both cores removed. Only using enough psi to feel it coming out of supply service port. Had to empty roughly 2 80cf bottles just to get everything out and down to proper microns. The Vaccum pump had little to no effect on boiling off any of this solution. I ran my pump on and off for 2 days with little effect. If you use this you better have a lot of nitrogen. Honest review here with changing my own ac system.

## 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

---

## 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.kr/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack](https://www.desertcart.kr/products/213369648-mastercool-91049-128-4-black-yellow-flush-solvent-4-pack)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-02-06*