---
product_id: 204127833
title: "RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles"
brand: "gtmotor"
price: "621 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Gtmotor"
url: https://www.desertcart.ro/products/204127833-ra003-active-fuel-management-disabler-device-afm-dfm-disabler-device
store_origin: RO
region: Romania
---

# Keeps V8 mode active for max power Plug & play, no tools needed No ECU reprogramming, factory safe RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles

**Brand:** gtmotor
**Price:** 621 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡ Keep your GM roaring in V8 mode—because half power is so last season!

## Quick Answers

- **What is this?** RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles by gtmotor
- **How much does it cost?** 621 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/204127833-ra003-active-fuel-management-disabler-device-afm-dfm-disabler-device)

## Best For

- gtmotor enthusiasts

## Why This Product

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

## Key Features

- • **Unleash Full V8 Power:** Experience relentless V8 performance without cylinder deactivation slowing you down.
- • **Effortless Installation:** Plug and play design means zero tools, zero hassle—get back on the road faster.
- • **Smooth, Consistent Drive:** Eliminate AFM-induced engine shudder and misfire for a seamless throttle response every time.
- • **Preserve Your Factory ECU:** No reprogramming required, so your vehicle’s core systems stay untouched and reliable.
- • **Wide Compatibility with Caution:** Works with most GM V6/V8 models—just note exclusions for 2019+ 5.3L & 6.2L 10-speed transmissions.

## Overview

The RA003 Active Fuel Management Disabler is a plug-and-play device designed to keep GM V6 and V8 engines running in full V8 mode, eliminating AFM/DFM cylinder deactivation. It installs easily without tools or ECU reprogramming, improving engine smoothness and power delivery while maintaining factory system integrity. Compatible with most GM models except select 2019+ 10-speed transmissions, it’s a smart upgrade for drivers craving consistent V8 performance and longevity.

## Description

Buy RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles: Engine Management Systems - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Easy and effective! - I received this today and couldn’t wait to try it. My 2007 Chevrolet Tahoe has the AFM. Recently it developed a “shuddering” in the engine when slowing down, along with a little feel of a periodic misfire at idle. My mechanic discovered the misfire was occurring in cylinder 4 and was likely related to the shuddering and these were both caused by AFM. Installing is a breeze. However, I did not disconnect the battery as the instructions indicate, but had read other reviews stating they just plugged it in while the engine was off, so I did that. The unit went through a cycle with the lights and then settled on one light on at the end. I let the car sit for several hours as I had some other business to attend to. I then hopped in the tahoe and it fired right up, and took it for a drive. It performed excellent. Love the feel of the V8 all the time. Shuddering completely gone with no V4 at any time throughout the ride. I still felt a little periodic misfire at idle, but that’s likely a lifter that is sticking a bit. My only regret is that I didn’t plug this in at 100,001 miles as I believe the lifter sticking (which is the beginning of the end for the motor) is due to AFM. I currently have just over 200,000 miles on the car and engine and with this device I just might make 300,000. If you’re looking for an AFM Disabler, this is a solid pick at a good price! Let’s see how it does over time….
Review: Plugs right in and works great! - Bought this for a 2015 GMC Yukon XL. The Yukon was sluggish in 4 cylinder mode and did not transition smoothly between 4 and 8 cylinders. We were also having torque converter issues and needed to be able to tell which symptoms were from torque converter issues and which symptoms were just transition between 4 and 8 cylinders. Turns out a new torque converter was needed, but left this plugged in simply for in town driving because of the lugging. So far a slight decrease in mpg has been noticed, but well worth it for nice smooth in town driving. It is also nice on the highway to not have to wait for the truck to switch modes then downshift for acceleration. Would definitely recommend! This seems to do just as good of a job as any other brand would for much less money. Bought this one because of the good reviews and wanted to share that it has been well worth it! Hoping to also save the hassle of doing lifters in the future.

## Features

- 1.AFM/DFM Disabler Device RA003 Compatible with most GM V6 and V8 vehicles.
- 2.AFM RA003 keeps the vehicle in the V8 mode all the time，help your car get super power.
- 3. Plug and play, install without any tools.Please unplug the product,when you do not use this for a long time.
- 4. Keep the factory ECU, not programming the ECU of the vehicle, and does not affect other functions of the vehicle, but the modified vehicle is cautious to buy.
- 5. Please note: V8 mode will keep all the cylinder running, the water temperature may increase during driving. The product currently not compatible with 2019+ 5.3L 10-Speed or 6.2L 10-SPEED models.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07TTRC3MM |
| Best Sellers Rank | #509,221 in Automotive ( See Top 100 in Automotive ) #93 in Automotive Replacement Engine Management Systems |
| Brand | GTMOTOR |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,615) |
| Date First Available | July 4, 2019 |
| Item Weight | 1.76 ounces |
| Item model number | Amanita muscaria Clenbuterol Codeine |
| Manufacturer | GREATUS |
| Manufacturer Part Number | RA003 |
| Product Dimensions | 4.72 x 3.94 x 3.94 inches |

## Images

![RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles - Image 1](https://m.media-amazon.com/images/I/711R+EdQSRL.jpg)
![RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles - Image 2](https://m.media-amazon.com/images/I/71obycY1iPL.jpg)
![RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles - Image 3](https://m.media-amazon.com/images/I/81CYRxsoHyL.jpg)
![RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles - Image 4](https://m.media-amazon.com/images/I/81T8VA2U4iL.jpg)
![RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles - Image 5](https://m.media-amazon.com/images/I/81Y3IuWeXSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy and effective!
*by D***S on April 11, 2023*

I received this today and couldn’t wait to try it. My 2007 Chevrolet Tahoe has the AFM. Recently it developed a “shuddering” in the engine when slowing down, along with a little feel of a periodic misfire at idle. My mechanic discovered the misfire was occurring in cylinder 4 and was likely related to the shuddering and these were both caused by AFM. Installing is a breeze. However, I did not disconnect the battery as the instructions indicate, but had read other reviews stating they just plugged it in while the engine was off, so I did that. The unit went through a cycle with the lights and then settled on one light on at the end. I let the car sit for several hours as I had some other business to attend to. I then hopped in the tahoe and it fired right up, and took it for a drive. It performed excellent. Love the feel of the V8 all the time. Shuddering completely gone with no V4 at any time throughout the ride. I still felt a little periodic misfire at idle, but that’s likely a lifter that is sticking a bit. My only regret is that I didn’t plug this in at 100,001 miles as I believe the lifter sticking (which is the beginning of the end for the motor) is due to AFM. I currently have just over 200,000 miles on the car and engine and with this device I just might make 300,000. If you’re looking for an AFM Disabler, this is a solid pick at a good price! Let’s see how it does over time….

### ⭐⭐⭐⭐⭐ Plugs right in and works great!
*by N***E on July 8, 2024*

Bought this for a 2015 GMC Yukon XL. The Yukon was sluggish in 4 cylinder mode and did not transition smoothly between 4 and 8 cylinders. We were also having torque converter issues and needed to be able to tell which symptoms were from torque converter issues and which symptoms were just transition between 4 and 8 cylinders. Turns out a new torque converter was needed, but left this plugged in simply for in town driving because of the lugging. So far a slight decrease in mpg has been noticed, but well worth it for nice smooth in town driving. It is also nice on the highway to not have to wait for the truck to switch modes then downshift for acceleration. Would definitely recommend! This seems to do just as good of a job as any other brand would for much less money. Bought this one because of the good reviews and wanted to share that it has been well worth it! Hoping to also save the hassle of doing lifters in the future.

### ⭐⭐⭐⭐⭐ Does not drain the battery when plugged in.
*by J***. on October 22, 2025*

Works great. The blue light lets you know it is connected and when it is off it Not draining the battery. I left it plugged in for a week with no drainage issues to the battery. I definitely recommend if you want V8 power all the time. Mine is used in a 2010 Avalanche Z71 with flex fuel.

## Frequently Bought Together

- RA003 Active Fuel Management Disabler Device, AFM/DFM Disabler Device Compatible with most GM V6 and V8 Vehicles
- bbfly-A9 OBD II OBD2 16 Pin Splitter Extension 1x Male and 2X Female Extension Cable Adapter (2FT/60CM)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-06*