---
product_id: 320969224
title: "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: "NT$1273"
currency: TWD
in_stock: true
reviews_count: 12
category: "Muzzys"
url: https://www.desertcart.tw/products/320969224-a-c-hack-kit-fits-ram-2019-2020-2021-2022
store_origin: TW
region: Taiwan
---

# Quick install, no permanent mods 8°-15° cooler A/C temps Premium durable metal components 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:** NT$1273
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** 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?** NT$1273 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/320969224-a-c-hack-kit-fits-ram-2019-2020-2021-2022)

## 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 clamps and hose shut-off valve—no dash removal required.
- • **Universal Ram Fit:** Fits 2019-2025 Ram 1500, 2500, 3500 gas & diesel trucks with known A/C issues.
- • **Engine-Safe Design:** 100% safe with zero risk of engine lights or damage—premium parts built to last.
- • **Beat the Factory Flaw:** Bypass the heater core blend door defect that makes your A/C warm and weak.
- • **Feel the Chill Difference:** Experience noticeably cooler air, dropping cabin temps by up to 15 degrees.

## Overview

Muzzys A/C Hack Kit is a precision-engineered bypass mod designed to fix the factory heater core blend door defect in Ram 1500, 2500, and 3500 trucks (2019-2025). It installs quickly without dash removal, uses premium metal components and clamps, and guarantees 8°-15° cooler air conditioning performance without risking engine damage or warning lights.

## Description

Product description Maximize the A/C in your Ram truck. With the valve closed you are guaranteed to make your A/C blow 8°-15° cooler!

Review: Easy AC Fix - This kit returned my 2021 Ram back into an ice cold cabin! Easy to install but removing the stock hose was a bit of a challenge. This product is a money saver! Thanks Muzzy!!!
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.

## 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 |
|---------------|-------|
| ASIN | B092YVQS7K |
| Best Sellers Rank | #24,362 in Automotive ( See Top 100 in Automotive ) #11 in Automotive Replacement Heater Blend Door Levers |
| Brand | Muzzys |
| Brand Name | Muzzys |
| Color | Black |
| Connector Type | Clamp |
| Customer Reviews | 4.6 out of 5 stars 362 Reviews |
| Item Weight | 1 Pounds |
| Manufacturer | Muzzys |
| Material | Metal |
| Material Type | Metal |
| Model Number | 10377 |
| Number of Pieces | 5 |
| Set Name | True |
| Size | 0.625 inches |
| Thread Size | 0.625 |
| Thread Type | NPT |
| UPC | 600599657694 |
| Unit Count | 1.0 Count |

## Product Details

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

## Images

![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)
![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)
![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)
![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)
![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

### ⭐⭐⭐⭐⭐ Easy AC Fix
*by J***L on May 29, 2026*

This kit returned my 2021 Ram back into an ice cold cabin! Easy to install but removing the stock hose was a bit of a challenge. This product is a money saver! Thanks Muzzy!!!

### ⭐⭐⭐⭐⭐ 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.

## 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 Taiwan*
*Store origin: TW*
*Last updated: 2026-06-19*