---
product_id: 320969224
title: "MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel"
brand: "muzzys"
price: "8245 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Muzzys"
url: https://www.desertcart.kg/products/320969224-muzzys-a-c-hack-kit-fits-ram-2019-2020-2021
store_origin: KG
region: Kyrgyzstan
---

# Easy install, no permanent mods 8°-15° cooler A/C boost 100% safe, no engine lights MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel

**Brand:** muzzys
**Price:** 8245 som
**Availability:** ✅ In Stock

## Summary

> ❄️ Upgrade your Ram’s A/C game—cooler rides, zero compromises!

## Quick Answers

- **What is this?** MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel by muzzys
- **How much does it cost?** 8245 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/320969224-muzzys-a-c-hack-kit-fits-ram-2019-2020-2021)

## Best For

- muzzys enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Cool:** Install in minutes with premium clamps and hose shut-off valve—no dash removal required.
- • **Universal Ram Fit:** Compatible with 2019-2025 Ram 1500, 2500, 3500 gas & diesel trucks.
- • **Beat the Factory Flaw:** Bypass the heater core blend door defect that leaves your Ram’s A/C warm and weak.
- • **Long-Term Reliability:** Built with durable metal components that won’t fail or trigger engine warnings.
- • **Feel the Chill, Skip the Hassle:** Drop your cabin temp by up to 15° without costly dealer repairs or dash damage.

## Overview

The MUZZYS A/C Hack Kit is a premium, easy-to-install bypass mod designed specifically for 2019-2025 Ram 1500, 2500, and 3500 trucks with weak factory A/C. It fixes the heater core blend door defect by rerouting coolant flow using a clamp-on shut-off valve and hose, delivering 8°-15° cooler air without permanent modifications or triggering engine lights. Compatible with both gas and diesel models, this durable metal kit offers a cost-effective, reliable alternative to dealer HVAC system replacements.

## Description

Buy MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel: Heater Blend Door Levers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Coolant shut off - Installed on my 2021 Ram 2500. Helped with the ac cooling better. Easy to install fit perfectly, and decent quality. Works as intended. Traded the truck in 2025 and still was working as it should.
Review: Works as described. - Installed after my '20 Ram a/c felt a little too humid and warm. Installation is a little difficult when you're trying to remove the original hose. That hose just doesn't want to come off. Once you're past that point, installation is easy. After running the truck for about five minutes, the a/c temp dropped about 5-8 degrees. When driving in the town, the temp is very comfortable now. A great solution to a poor original design.

## Features

- Muzzys premium A/C hack mod kit. Fits: Ram 1981-2019, 2020, 2021, 2022, 2023, 2024, 2025, 1500, 2500, 3500, gas, and diesel trucks with weak and or warm A/C from the factory. Fix the design defect they refuse to fix yourself!
- Gas trucks-**See Photo 4**Install the valve at the water pump on the front of the motor on the heater supply hose. Find the hose labeled "Eng Out" and remove it. Install this valve to the hose you removed and connect the supplied hose to the valve and the water pump. Install clamps as shown in the photos. Top off coolant, you will lose some when you initially removed the hose from the water pump.
- Diesel trucks- **See Photo 5** Install the valve on the heater supply line above the turbo. See Photo 5 to determine exact location to install the valve. Remove the heater supply line from the black tube coming from the motor. Install this valve to the hose you removed and connect the included hose to the valve and black tube and install the clamps as shown in the photos. Top off your coolant, you will lose a small amount when you remove the line.
- There is a known defect in these new trucks. The blend door in the dash allows hot air via the heater core into the HVAC system when the AC is on. There is a service bulletin to address this and it requires them to rip your entire dash out to replace the HVAC system. I guarantee you will have damage and problems down the road if you allow them to do this plus there are many reports that it does not even fix the problem! This is an easy fix that is guaranteed to make your A/C blow 8°-15° cooler!
- This kit installs in minutes without making any permanent mods to your truck. It is 100% safe for your truck and won't cause any damage or Engine Lights. This kit is comprised of premium components that will not fail.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Muzzys |
| Color | Black |
| Connector Type | Clamp |
| Material | Metal |
| Size | 0.625 inches |
| Thread Size | 0.625 |

## Product Details

- **Size:** 0.625 inches
- **Brand:** Muzzys
- **Color:** Black
- **Connector Type:** Clamp
- **Thread Size:** 0.625
- **Thread Type:** NPT
- **Item Weight:** 1 Pounds
- **Number of Pieces:** 5
- **Manufacturer:** Muzzys
- **UPC:** 600599657694

## Images

![MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel - Image 1](https://m.media-amazon.com/images/I/31CFn2nDUFS.jpg)
![MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel - Image 2](https://m.media-amazon.com/images/I/61cuVi4-VpS.jpg)
![MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel - Image 3](https://m.media-amazon.com/images/I/61cBGXRusyS.jpg)
![MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel - Image 4](https://m.media-amazon.com/images/I/91eFve-9dQL.jpg)
![MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel - Image 5](https://m.media-amazon.com/images/I/91HCn5HujHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Coolant shut off
*by J***N on August 17, 2025*

Installed on my 2021 Ram 2500. Helped with the ac cooling better. Easy to install fit perfectly, and decent quality. Works as intended. Traded the truck in 2025 and still was working as it should.

### ⭐⭐⭐⭐⭐ Works as described.
*by P***D on August 19, 2024*

Installed after my '20 Ram a/c felt a little too humid and warm. Installation is a little difficult when you're trying to remove the original hose. That hose just doesn't want to come off. Once you're past that point, installation is easy. After running the truck for about five minutes, the a/c temp dropped about 5-8 degrees. When driving in the town, the temp is very comfortable now. A great solution to a poor original design.

### ⭐⭐⭐⭐⭐ Works great
*by C***2 on December 21, 2025*

The install was easy. Didn’t lose much antifreeze during installation. I had to really tighten the supplied hose clamp down to stop a drip. A must have for the 5th gen Ram. Huge difference in A/C performance.

## Frequently Bought Together

- MUZZYS A/C HACK KIT Fits: Ram 2019 2020 2021 2022 1500 2500 3500 Trucks with Weak/Warm Air Conditioning from Factory, Heater Core Blend Door By-Pass Mod Fix, W/Clamps Hose Shut Off Valve, Gas & Diesel
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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-08*