MILLERCAT Catalytic Converter Shield / Anti-Theft Guard – 2016-2022 Toyota Prius Gen 4

Fits all 2016-2022 Prius Liftback and Prius Prime Trims with OEM converters.

Comes with Cat Shield, installation hardware, Cat Shield Protected sticker, and detailed installation guide.

Free shipping is available to the lower 48 States. Does not include PO Boxes. Orders may take 1-2 business days to fulfilll.

Customers who need their products right away may want to pay for expedited shipping. Here are a few things to consider when choosing a faster shipping method.

– Miller CAT provides the option for faster shipping but is only a pass through for any charges. We do not make any money off of this service.

– When calculating your possible receive date, please remember that shipping services do not ship on weekends or holidays and that orders received after 1:00pm PST cannot be guaranteed to ship that day.

– Due to COVID and high volume of shipments, carriers are not always able to meet their target shipping times. Please understand we have no control over shipment tracking or times after the product leaves our facilities. 

– If you live in California or the West Coast, you may not need that expedited shipping. UPS ground can reach your destination in one to two days.

If you wish to make an international purchase please contact us at info@millercat.com. By default we only ship to a few international destinations. Please be aware that there may be significant fees for you (the buyer) must pay when you receive the product.

Value Added Taxes (VAT) and import duties are some of the fees that your country will impose on your purchase. We do not know what these fees are and they are solely managed and determined by your customs office.

We have a 90 day manufacturers warranty against defects from the manufacturing process. This covers issues that prevent the proper installation or performance of the product. 

Cosmetic imperfections that occur either from the manufacturing or shipping process are not covered. We do not manufacture a cosmetic product or ones designed for show. Any undercar product will quickly have scratches and scuffs due to the location of the product and proximity to the road. Click here to find out more about the manufacturing process and what you might expect from your product.

We do NOT guarantee our product against theft. Cat Shields are a deterrence device that is meant to discourage theft and/or make it more difficult for thieves to steal your converter. Given the right tools, technique or time, a thief can still take your converter. However, by having a shield, you are significantly increasing your protection against theft. Similar to a car or home alarm, you are making thieves second guess themselves and consider moving onto another target. Deterrence works and we have countless customer accounts and video evidence that converter theft stopped (for those with repeated theft) or thieves looked and moved on to other vehicles.

There is a 30 day return policy window for unused products. Please visit this link for more information.

*We do ask that customers carefully make their purchases and reduce the possibility of returns as much as possible. Help us reduce the carbon footprint of these shields as they are large and expensive to ship.

Our Aluminum Gen 4 Cat Shield™ is the only completely drill-less shield for the Gen 4 Prius. The shield uses existing mounting points so you will not have to drill into the vehicle. Fits all Gen 4 Prius without needing to buy additional parts. The shield is completely flush with the underbody that it looks like it came directly from the factory. Fully removable and galvanic corrosion resistant.

Material: Premium Grade 5052 Aluminum | 14 Gauge

304 stainless steel version available. Find out the difference between Stainless vs Aluminum catalytic converters

Upgrade Options: MILLERCAT Custom Screw Kit. Info on screw options

REQUIRED TOOLS FOR INSTALLATION. 5/16″ bit driver or 5/16″ socket, 10mm socket, 12mm socket, 13mm wrench, and panel fastener removal tool or flat head screw driver. Installation Guide

FREE SHIPPING IN THE CONTINENTAL US!

Vehicle makes and models this catalytic converter shield will fit

YearMakeModel
2016ToyotaPrius Gen 4
2017ToyotaPrius Gen 4
2018ToyotaPrius Gen 4
2019ToyotaPrius Gen 4
2020ToyotaPrius Gen 4
2021ToyotaPrius Gen 4
2022ToyotaPrius Gen 4

Catalytic Converter Guard Shipping Information

Customers who need their products right away may want to pay for expedited shipping. Here are a few things to consider when choosing a faster shipping method.

– MillerCAT provides the option for faster shipping but is only a pass through for any charges. We do not make any money off of this service.

– When calculating your possible receive date, please remember that shipping services do not ship on weekends or holidays and that orders received after 1:00pm PST cannot be guaranteed to ship that day.

– Due to COVID and high volume of shipments, carriers are not always able to meet their target shipping times. Please understand we have no control over shipment tracking or times after the product leaves our facilities.

– If you live in California or the West Coast, you may not need that expedited shipping. UPS ground can reach your destination in one to two days.

Thank you for your interest in our products. We will do our best to not only make the best product on the market, but also do what we can to get it to you as fast and as safe as possible.

Catalytic Converter Graphics-01

Customer Reviews for 2016 2022 Prius Gen 4

five stars rating
Very good product - installed ourselves

We were able to install it ourselves with the help of tire racks to raise up the front wheels. Thanks for the video and instructions.

Anonymous
five stars rating
Good product

I had a mechanic installing it on a 2022 Prius Prime and I did not hear from him of anything going wrong. It took him less then one hour to install it.

MikeO
five stars rating
Great

Perfect!

Tacofeast
five stars rating
For my Prius prime

Muffler shop recommended this shield from Miller Cat, perfect fit and easy to install, a well made product

David Hansen
five stars rating
Very easy

Very easy to install. Very sturdy. When I get a new car I will buy this product again.

Jesus Villarreal
five stars rating
Mechanic loves it

My mechanic installed it and was enthusiastic. He asked for the specs to pass to another client.

Richard Martin
five stars rating
OEM hardware, easy to install.

Excellent instructions and easy to install. I followed the video on their website and everything else on installation was easy. I have a 2021 Prius prime and the cat shield installed in less than one hour. If you are mechanically inclined you won’t have a problem installing the shield. I do agree with other reviews in that it’s at least a good deterrent to thieves because it increases their theft time. In reality, if a thief is **** bent on stealing it they’re gonna take a bigger risk of getting caught removing the shield to get at the cat. I feel good about my investment.

Herbert M Brandt
five stars rating
Just what the cat thieves hate to see ( I hope)

Nothing will deter a determined tweaker but I do believe the coverage provided by the millercat shield will encourage these idiots to move on to a softer target – full marks for extra service on my order as well – unit went on my vehicle in my garage in about 30 minutes no issues at all – time will tell but at least I rest easier knowing Miller and I have done all that we could

mark burch
five stars rating
Always timely, always fits

Bought this one for my 2016 Prius 3 – installed by my local mechanic. We have done the same with our 2005 Prius. They must work: while ours our installed, our neighbors have their catalytic converters stolen. MillerCat’s customer service seems to be always available during business hours, always friendly, and always recommend the right product!

Anne Kjemtrup
five stars rating
Millercat gen 4 shield

Awesome product easy to install no drilling on vehicle required great deterrent

Antony Atchison
five stars rating
2017 Prius cat security cover

Great product. Catylitic converter theft on prius’ is high where I live. This is a great piece of mind. It shipped quickly and was easily installed locally

M. Hines
five stars rating
Now I Can Relax

There has been a rash of thefts in the area which seem to get closer to home each time so I decided to buy a Millercat shield. It took a lot longer to install than I thought it would. A bit difficult but I feel it is well worth it. I no longer have to worry about my car each night. I would recommend and in fact I have recommended it to a couple of my friends already.

Nancy Oliver
five stars rating
4th Gen Prius Prime

Excellent product with detailed instructions. Perfect fitment and easy installation. Thank you for making a great security solution for our vehicles.

Sammy
five stars rating
Cat Shield

Shipping fast and easy.

Karin Strand
five stars rating
Fast shipping good product

I installed it on my Gen 4 myself. A little difficult because I don’t have a lift but it’s doable! Make sure you have the right tools

Jacob Cabral
View More Reviews