catalytic converter theft prevention device

Best Catalytic Converter Security Devices

Best Catalytic Converter Security Devices


we will talk about the best catalytic converter security devices, and you can view this video about a review of security systems for catalytic converters.

Some of these gadgets were put to the test by Donut Media!




Catalytic converters play an important role in reducing harmful emissions from vehicles, but they are also a popular target for thieves.

With the rise in metal prices and the valuable metals found inside, it’s important to take steps to protect your catalytic converter from theft.


Catalytic converters can be expensive, with some costing over $2,000, and they are also highly susceptible to theft.

In fact, they can be stolen in less than two minutes, making them an attractive target for thieves.

As a result, owners of vehicles with multiple converters can face significant expenses.

To help you safeguard your catalytic converters, we have reviewed the most popular security devices on the market.

By understanding the pros and cons of each device, you can make an informed decision on which one is right for your vehicle.


Underbody Catalytic Converter Strap/Wires (Cat Clamp)

This security system consists of steel cables that wrap around the catalytic converter, making it difficult for thieves to saw through.

The cables are tightly fitted but allow for a small amount of movement. However, the strength of the steel cables makes it challenging to cut through.

This device may not fit every vehicle, and installation can be difficult, especially for large or small cars. It can also cause a rattling noise when driving and may not provide enough protection for full-sized pickups.

Additionally, it may require modifications to fit certain vehicles and can make the car look messy when viewed from underneath.


  • Difficult to cut through
  • Resistant to rust


  • May not fit every vehicle
  • Difficult to install
  • Can cause a rattling noise
  • May need modifications
  • Not aesthetically pleasing
  • May be cut with an angle grinder
  • Multiple kits are required for multiple converters
  • Can potentially damage the vehicle if cables become loose

Underbody Catalytic Converter Alarm

Underbody alarms are motion or heat-sensitive devices that activate when the exhaust system is jostled or when a sudden temperature change is detected. Some alarms are custom-made to fit a specific model of vehicle, but they can come with a higher price tag due to increased engineering and manufacturing costs.


  • Relatively inexpensive
  • Universal fit


  • May need to be manually armed and disarmed
  • Not waterproof
  • Potential for false alarms
  • Sensitive to moisture
  • Motion sensors may need regular maintenance


Anti-Theft Catalytic Converter Stickers

Anti-theft stickers are cost-effective visual deterrents that warn potential thieves that the catalytic converter is fitted with a security device.

They should be used in conjunction with other security systems to provide maximum protection.

However, the stickers need to be displayed in a prominent area, and thieves working underneath the vehicle may not even look for them.


  • Visual deterrent
  • Cheap
  • Can be attached to any vehicle


  • Difficult to see at night
  • Easily peeled off
  • May fade in the sun
  • May not be noticeable to thieves
  • Offers no physical security system
  • Easily ignored

Catalytic Converter Shields

Catalytic converter shields, also known as cat shields, are physical metal barriers that attach to the underside of a vehicle and cover the catalytic converter.

The best shields come with optional tamper-proof screws for additional security and should be installed by a professional.

The shields use the structural rigidity of the vehicle’s chassis to make them difficult to remove by thieves.

When choosing a cat shield, consider the material it is made of. 304 stainless steel is more dense and rigid than aluminum and is resistant to corrosion, making it a better choice for long-term protection.


  • The best catalytic converter security system for your vehicle
  • Rust resistant
  • Can be fitted with optional extras like tamper-proof screws for even greater security
  • Incredibly difficult to cut through
  • Arduous to remove or bypass by thieves
  • Can be easily removed with the supplied security key


  • Not all catalytic converter shields offer the same level of protection
  • May need to be installed by a mechanic

USE CODE: safetydefense and get 5% when you purchase your cat shield


When choosing the right catalytic converter security device for your vehicle, consider the following:

  1. The type of vehicle you drive: Depending on the size and shape of your vehicle, certain security devices may not be suitable. Consider whether a strap or wire, alarm, sticker, or shield will be appropriate for your vehicle.
  2. Your budget: Some catalytic converter security devices can be more expensive than others. Make sure you find a solution that fits within your budget and provides adequate protection for your needs.
  3. The level of protection you require: Consider how often you park your vehicle in high-risk areas, and what level of security you require to feel confident that your catalytic converter won’t be stolen.
  4. Ease of installation: Some security devices can be installed yourself, while others will require a professional. Consider the time and effort required to install the security device, and whether you’re comfortable doing it yourself.
  5. Maintenance requirements: Some security devices may require regular cleaning or maintenance to ensure they remain effective. Consider the time and effort required to keep the device functioning properly.

With these factors in mind, you can choose the right catalytic converter security device for your vehicle and ensure that your investment is protected.


How To Pick The Best Vehicle Catalytic Converter Security Device

After looking at the most popular catalytic converter theft deterrents, you can choose the one that’s best for your car based on your budget and the level of protection you require.

As thieves discover how to get through less expensive security measures, owners of highly targeted vehicles like the Toyota Prius and Toyota Tacoma may decide to invest in better-than-average security.

However, the cost isn’t everything.

A good security measure will be created to fit a particular vehicle and constructed of materials that are difficult to cut, work around, or remove.

Get the best catalytic converter defense available here, use code safetydefense for 5% off




How to Prevent Catalytic Converter Theft

How to Prevent Catalytic Converter Theft

Catalytic converter theft is a growing problem across the world, and it can be a costly and stressful experience for vehicle owners. This essential component of a vehicle’s exhaust system not only helps to reduce harmful emissions, but it is also a valuable target for thieves because of the valuable metals it contains. In this article, we will provide you with a comprehensive guide on how to prevent catalytic converter theft and protect your vehicle from this growing problem.

Understanding Catalytic Converters

A catalytic converter is a component in a vehicle’s exhaust system that reduces harmful emissions from entering the atmosphere. It works by converting carbon monoxide, hydrocarbons, and nitrogen oxides into less harmful substances before they are released into the air. The metals used in catalytic converters, such as platinum, palladium, and rhodium, are valuable and can be sold for a high price. This makes catalytic converters an attractive target for thieves.

Signs of Catalytic Converter Theft

The first sign of catalytic converter theft is usually a loud rumbling or muffled sound coming from the vehicle. This is because the converter helps to muffle the exhaust noise, and when it is stolen, the exhaust noise becomes much louder. Other signs of catalytic converter theft include a reduction in engine power, an increase in exhaust emissions, and a vibration or shaking coming from the undercarriage of the vehicle.

Preventing Catalytic Converter Theft

There are several steps you can take to prevent catalytic converter theft and protect your vehicle. These include:

  1. Parking in well-lit, secure areas
  2. Installing a catalytic converter lock or cage
  3. Installing an alarm system on your vehicle
  4. Engraving your vehicle identification number (VIN) on the catalytic converter
  5. Tracking devices
  6. Surveillance cameras
  7.  Owning a non-lethal personal security devices

By taking these preventative measures, you can help to reduce the risk of catalytic converter theft and protect your vehicle.

Parking in Well-Lit, Secure Areas

One of the easiest ways to prevent catalytic converter theft is to park your vehicle in well-lit, secure areas. This can include a garage or driveway, a secure parking lot, or a well-lit street. Thieves are less likely to target vehicles that are parked in well-lit, secure areas, and if they do, it will be easier to identify them.

Installing a Catalytic Converter Lock or Cage

Another way to prevent catalytic converter theft is to install a catalytic converter lock or cage. These devices secure the converter to the vehicle and make it much harder for thieves to remove it. There are several types of locks and cages available, so it is important to choose one that is compatible with your vehicle and meets your needs.

Installing an Alarm System on Your Vehicle

Installing an alarm system on your vehicle can also help to prevent catalytic converter theft. An alarm system will deter thieves and alert you if someone tries to tamper with your vehicle. Some alarm systems even have sensors that detect vibrations, making it possible to detect if someone is trying to remove the catalytic converter.

Engraving Your Vehicle Identification Number (VIN) on the Catalytic Converter

Engraving your vehicle identification number (VIN) on the catalytic converter can also help to prevent theft. If the converter is stolen and recovered, it will be easier to identify and return to the rightful owner. This can also serve as a deterrent to thieves, who know that a stolen converter can be traced back to them.

Tracking Devices

Installing a tracking device on your vehicle can also help to prevent catalytic converter theft. A tracking device uses GPS technology to locate your vehicle, even if it has been stolen. This can be especially useful in recovering a stolen converter, as it can be used to track the location of the vehicle and the thief.

Surveillance Cameras

Finally, installing surveillance cameras can also help to prevent catalytic converter theft. Surveillance cameras can provide a visual deterrent to thieves and can also be used to capture footage of the theft if it does occur. This footage can be used to identify the thief and assist law enforcement in recovering the stolen converter.

Owning a non-lethal personal security devices

Sadly sometimes the last deterrent to a thief might be to shoot him/her with a non lethal personal security device, while NOT recommended because the thief may also have a gun , it can discourage them and make them run away, for example the Byrna Gun

The Byrna HD is a non-lethal personal security device that is meant to give people a way to protect themselves in dangerous situations without doing serious damage.

if you want to learn more, please check out for a more detailed explanation and comparisons.


Catalytic converter theft is a growing problem, but it is possible to prevent it. By following the steps outlined in this article, you can reduce the risk of theft and protect your vehicle. It is important to take these steps seriously, as catalytic converter theft can be a costly and stressful experience for vehicle owners.