---
product_id: 99021023
title: "Mastercool 91049-32-6 Black/Yellow Flush Solvent, 6 Pack (32 oz)"
brand: "mastercool"
price: "$402.13"
currency: USD
in_stock: true
reviews_count: 10
category: "Mastercool"
url: https://www.desertcart.ec/products/99021023-mastercool-91049-32-6-black-yellow-flush-solvent-6-pack
store_origin: EC
region: Ecuador
---

# Fast evaporation Non-flammable solvent O-Ring safe formula Mastercool 91049-32-6 Black/Yellow Flush Solvent, 6 Pack (32 oz)

**Brand:** mastercool
**Price:** $402.13
**Availability:** ✅ In Stock

## Summary

> 🛠️ Clean your A/C like a pro—no residue, no hassle, just pure power!

## Quick Answers

- **What is this?** Mastercool 91049-32-6 Black/Yellow Flush Solvent, 6 Pack (32 oz) by mastercool
- **How much does it cost?** $402.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/99021023-mastercool-91049-32-6-black-yellow-flush-solvent-6-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 for sensitive parts:** O-Ring safe and non-corrosive for professional-grade care
- • **Breaks through clogs fast:** Flushes debris & sludge from A/C components with precision
- • **Zero residue, zero worries:** Evaporates quickly leaving no oily film behind
- • **Non-flammable & eco-conscious:** Work confidently with a non-flammable, non-corrosive solution
- • **Trusted professional strength:** Solvent-based formula made in the USA for reliable performance

## Overview

Mastercool 91049-32-6 Flush Solvent is a professional-grade, solvent-based cleaner designed to rapidly remove debris and sludge from A/C systems. It evaporates quickly without leaving residue, is safe on O-Rings, non-flammable, and non-corrosive, making it a trusted choice for efficient and safe A/C maintenance.

## 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 | B0140NTDQO |
| Best Sellers Rank | #118,682 in Automotive ( See Top 100 in Automotive ) #254 in Air Conditioning Line Repair Tools |
| Brand | Mastercool |
| Customer Reviews | 4.2 4.2 out of 5 stars (110) |
| Date First Available | July 29, 2015 |
| Item Weight | 6.48 pounds |
| Item model number | 91049-32-6 |
| Manufacturer | Mastercool |
| Manufacturer Part Number | 91049-32-6 |
| Model | 91049-32-6 |
| Product Dimensions | 10.5 x 8 x 9.5 inches |

## Images

![Mastercool 91049-32-6 Black/Yellow Flush Solvent, 6 Pack (32 oz) - Image 1](https://m.media-amazon.com/images/I/71r9JcYlHML.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 91049-32-6 Black/Yellow Flush Solvent, 6 Pack (32 oz)
- Mastercool 91046-A A/C System Flush Kit, Silver
- Car A/C Repair Kit - O-Ring Set + AC Valve Cores | Fix Air Conditioning | + Removal & Install Tool | R12 & R134a | - Also for Tire Valve Stems!

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**Shop now:** [https://www.desertcart.ec/products/99021023-mastercool-91049-32-6-black-yellow-flush-solvent-6-pack](https://www.desertcart.ec/products/99021023-mastercool-91049-32-6-black-yellow-flush-solvent-6-pack)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-02*