Home | Products | Toyota | Toyota Sequoia | MILLERCAT Catalytic Converter Shield / Anti-Theft Guard – 2007-2021 Toyota Tundra 4×4/2008-2022 Sequoia 4×4

MILLERCAT Catalytic Converter Shield / Anti-Theft Guard – 2007-2021 Toyota Tundra 4×4/2008-2022 Sequoia 4×4

Protect your Toyota Tundra 4×4 and Sequoia 4×4 with our Cat Shield™. Our three piece design is a drill-less installation that provides the best deterrence on the market. The 3/16″ aluminum offers the highest level of protection (settle for nothing thinner) and weight savings versus other metals. We look at every detail of our products to make sure you are protected!

Use code SAVE5%OFF at checkout to save! Limited time!

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.

The Sequoia is one of the most prized targets for catalytic converter theft, and for good reason. The Sequoia features not one, but TWO front catalytic converters and another two just to the rear. With each converter fetching high prices on the black market, the Sequoia is a dream come true for criminals.

According to some police departments, the Sequoia’s catalytic converts can fetch as much as $1500-$2000. Not bad for a job that takes a crook just a few minutes to complete. It isn’t uncommon for Toyotas in general to be high-value targets for converter theft, with a majority of thefts attributed to various makes and models including the Sequoia and Toyota Tundra 4×4.

Cat Shield Metal Material: 3/16″ Premium Grade 5052 Aluminum

Add-On Options: 

Rear Wing Add-on: The installation of the Rear Shield (x2) add-on provides complete protection for all four converters for your 2018-2021 Toyota Tundra 4×4.

AVK TOOL Add-On : This tool will help with the installation of your 2007-2021 Toyota Tundra catalytic converter cover so you will no longer need to raise the transmission for installation. This tool is not meant to be used for multiple products as it will lose it’s effectiveness after every installation.

 – We use tamper-proof screws in all our mounting points. These are a patented design that you cannot purchase off the market. They are not the same as other companies that claim to use tamper-proof screws when they are just using common 6 lobe torx screws.

– Our shield wings are installed with tamper-proof screws that are recessed in the shield so that no one can remove the wings by cutting off the screw head.

– Our shield is thick enough to act as a skid plate and protect your vehicle from rocks and debris.

Our Fitment Commitment:

There are hundreds of variations of Tundras and Sequoias that this product may fit. While we do our best to test and verify every model, it is impossible to know for sure. We guarantee that if our shield does not fit (and you purchased the right shield for your vehicle), we will give a full refund and return shipping on the product. If you ever have any issue, take a picture of it, contact us, and we will do our best to help you out.


* Our shield will fit on a 2WD Tundra. While we are working on a specific 2WD Tundra, customers can know that our main shield will provide deterrence from thieves and purchase our additional wings (to cover more of the rear converters) when they are available.

– If you have a TRD Pro skid plate, please contact us and we will provide extra long screws for you to use with your skid plate.

– If there are any lift kit modifications made to the cross member of your vehicle, our Cat Shield may not be compatible. Please send a photo to info@millercat.com to confirm fitment.

REQUIRED TOOLS FOR INSTALLATION. Rivet Nut Tool with M6 Mandrel/Head, 1/4″ bit driver, 12mm open wrench. Installation Guide

*Professional installation recommended.

FREE SHIPPING IN THE CONTINENTAL US! Info on expedited shipping options.

2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Toyota Tundra Catalytic Converter Location

2007-2021 Toyota Tundra Catalytic Converter Location

Vehicle makes and models this catalytic converter shield will fit


2008-2022 Toyota Sequoia Catalytic Converter Location

2008-2022 Toyota Sequoia Catalytic Converter Location

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 illustration with texts

Customer Reviews for 2007 2021 Tundra / 2008 2022 Sequoia

five stars rating
2019 Tundra TRD Pro

Purchased here and used discount code I found on YouTube in a review for this product. Worked well. Install was quick. Go the rivet applicator also. Install was quick. I put the shield under the trd pro plate and there was no issues. Feel better about hotel stays and mall shopping now. It’s gonna happen. Take care of it.

David Rodríguez
five stars rating
Easy to install, great design

This was easier than I had expected to install. It can be done solo, but is a lot quicker and easier with help. The design allows proper airflow and looks really sturdy. The only thing about the design I wonder about is that as my vehicle has 4 catalytic converters, this covers the front two fully and only covers the back two partially. It does fulfill the immediate concern about quick and easy access by thieves but may not be fool proof against a determined thief.

Patrick G.
five stars rating
Excellent Customer Service

I got my CatShield in perfect timing. Great Experience!

Laura W.
five stars rating
Well Pleased

I received the product in a timely manner and was satisfied with its quality. Instructions were easy to follow and installation was a breeze. It all fulfilled expectations.

Neal Cherry
five stars rating
Millercat purchase

great build for the main components and side shields. be very careful handling the product for first time…very sharp edges…razor sharp. need to take a deburring tool or file to soften the edges.
also, i purchased the optional rear shields….not very impressed, perfect fit, however, no where near the same thickness like the main shield. very thin. i would have paid a bit more, and preferred, for them to be the same thickness as the rest. once you install them, give them small strikes with your hand or fist….they will rattle with vibration. you will need to find the sources of vibration and “pad” them with rubber or some sort of other vibration dampener.
for the 2018 Tundra 4×4 set up…i did NOT have to raise the tranny to install the rivnut. i found on Amazon a set of rivnut tools designed for tight spaces, “HIFESON Hand Rivet Nut Tool,Handy Rivnut Tool – Metric & SAE with 30pcs Steel Rivet Nuts,Rivet Nut Kit with Sturdy Case Packed, Designed for Tight Space”, only had to drop the small metal shield under the transfer to allow access to the hole suggested for the rivnut install….no problem took approx one minute to install…done!

five stars rating
Millercat is the way to go.

Quality product. Easy installation. Great theft deterrent. Would recommend.

Shawn Lashbrook
five stars rating
Tundra Cover

Awesome product, fits my 2020 trd pro nicely. Had to adjust or get different screws because I have the trd skid plate but that is no biggie. Recommend!

Cheng Chang
five stars rating
Quality craftsmanship

Holes lined up, angles on bent aluminum plate match factory braces, overall very good product. Gives somewhat peace of mind spending $700 to avoid spending $5000 replacing 4 cats and O2 sensors. Word to future purchasers . Only need the $20 Avk tool … do not need the $50 tool to install the inserts. Also don’t have to lift transmission like the outdated procedure says … just us the $20 Avk tool.

Rick F
five stars rating
2021 Tundra CM 4x4 Cat Shield

My Tundra has a TRD Skid Plate, and I researched installing the Cat Shield. I was able to install the Cat Shield on my own, but if you decide to do it, you will need to unscrew the back screws from the TRD Skid Plate and slide the Cat Shield under and use the new screws provided by MillerCat.

Alan Toledo
five stars rating
Awesome product

Far surpassed the quality I was anticipating! Easy to install took me no more than 20 minutes. Gives me peace of mind knowing the toothless night walkers can’t get ti my cats! Thanks again for a great product!!

Louis Enderle
five stars rating
Happy customer

I ordered a Miller cat shield for my Toyota Sequoia and I received it on time. Fit was excellent and I would recommend them to everyone.

Scott Shafer
five stars rating
2007-2021 Toyota Tundra

MILLERCAT 2007-2021 Toyota Tundra 4×4/2008-2022 Sequoia 4×4 Cat Shield™

Brian Anderson
five stars rating
2021 Tundra 4x4

I purchased the main and the rear shield add-on. Everything arrived quickly and in excellent condition. Good instructions, all of the quality hardware was included and the solo install was straight forward (with the help of a floor jack). Excellent fitment all around!
I was a bit disappointed that the rear shields were only half the thickness of the main shield (approx. 3/32″ instead of 3/16″). Also, the rear shield install replaced the much desired flush mount bolts for button head bolts, on the 2 rear locations only.
Overall I am very satisfied with the purchase and quality/design of the shields.

five stars rating
Very Satisfied

Easy to install and the quality is 100%

five stars rating
Excellent product

Hands down the best shield….I love the flush mounted security bolts….but I only wish the instructions was better or a YouTube video on many different trucks but I managed to do it my self. Also I would like if the can make a small piece one for each side that would not allow a long sawzall blade to fit through and cuts the rear cats off I had to make my own pieces out of aluminum and drilled through the plate to bolt them down…..now I’m 100% safe

Evaggelos Gountas
five stars rating
Truck Shield

So far so good. I still have my cat converters! After installation of the shield I notice that the two rear CC were still somewhat exposed. I’m assuming that the front portion of the two are far enough forward that the thief can’t get a saw in there to cut it. I would love to hear back from someone on this.

Craig Clark
five stars rating
Awesome product

Awesome product. Installation was a breeze.

Jeff Stewart
five stars rating
It should deter the thieves!!!

Nothing short of a 45 caliber will stop them. I believe the Miller Cat will send them on to another vehicle that appears easier for them to steal the catalytic converters. Easy to install. Mounting holes matched up. No problems. Just hoping it works. I have two friends interested in purchasing the Miller Cats.

Patrick Koen
five stars rating
2020 Tundra cat shield

Nice install clean look and heavy duty product, very pleased with the outcome.

Larry Norfolk
five stars rating
Install was easy

Three days from ordering to delivery . Install was easy , customer support was great . Great option for protecting and keeping your catalytic converters . 2019 Toyota Tundra

Pete Nicholson
five stars rating
mechanic approved

I had my mechanic install the Cat Shield. When he was done installing the shield he decided to get one for his pickup. He is not easily impressed – so it has to be good. Would be nice if it covered all the cats.

2016 Tundra
five stars rating

Tundra 2019 no way to lift transmission on 4 wheel drive install. Drilled new mount point lateral 2 inches. Ordered multiple mandrills for
Rivnut m6, ended up using closest US size.
Thoughts are all the extra effort for difficult extraction hardware only serves to increase difficulty of installation and maintenance and not to deter theft. Would enjoy seeing CAT coverage over rear mist converters.

Tundra 2019
five stars rating
No Sweat Installation

Well Designed. Well Built. Easy to Install. Looking forward to additions for rear cats.

Britt Boyd
five stars rating
Awesome cat shield

Ordering was straight forward and the package came very quickly. Within a few days. Installation was a breeze, no issues there. Didn’t have to remove anything and made my own rivet tool. I did have a friend help to hold it while installing the bolts. Much easier this way. Only took about an hour to install. Looks great!

Michael Smith
five stars rating
Perfect fit and protected

Actually did the installation myself. It all dropped into place and it’s snug and secure. I’m ready for out trip down the coast, no worries.

peter hastings
five stars rating
Great Product

I received my Cat Shield within one week after I ordered it. Had my local Toyota dealer install it for $159 and I was up and running. Great product and service. My Toyota dealer said it was easy to install and that they would probably recommend it from now on. I’m a satisfied and happy customer that once again don’t worry about getting my cats stolen off my Tundra Truck.

Axel Arder
five stars rating
Quality Cat Shield

Quality product right down to the hardware that is used. Much better than I expected! Worth every penny. It’s a great feeling to have the peace of mind knowing my truck is protected. Looking forward to when you have the rear cat shield available for purchase!!

five stars rating
Great experience, start to finish

Quick response, on-time shipping, straightforward install. All parts included, easy instructions. Great purchase.

B Williams
five stars rating
Perfect Fit for my 2012 Tundra

Fit & Finish is outstanding thanks to your R&D.

Butch S
five stars rating
Perfect Fit

Just purchased and installed the Tundra shield this week. Looks great! A little added security considering the uptick in crime. I was a little concerned about the holes lining up but they lined up perfectly. To avoid lifting the transfer case I installed the rivet nuts using a Hifeson rivet nut tool and an allen wrench. I tightened that screw with the bit and a crescent wrench. Took about 30 minutes.

Tim P
five stars rating
Cadillac converter shield

Excellent product fit my 2022 sequoia perfectly!! like the other reviews I wish it covered the back to cats better ! easy to install did it by myself with a floor jack took me a half an hour

five stars rating
Tundra Cat Shield

Cat Shield fit my 2010 2wd crewmax like a glove. Perfect fit!

Andrew Karrer
five stars rating


Adam Rice
five stars rating
Easy to install

It shipped in 3 pieces with all the necessary bolts and attachment hardware. If you do not have a nut rivet tool, you should pick one up if you plan to install this yourself. Installation itself took all of 10 minutes with a helper. I did not need to move the transfer case, I just inserted the nut rivet on that side from a different angle and was able to crimp it without difficulty. The assembled unit is a little heavy and unwieldy while you are laying on your back, so having a second set of hands to help line it up and start the bolts will make it much easier. If your truck is stock height, pulling the front up onto a pair of ramps also makes the job much easier. It looks clean and I like the fact that it provides more undercarriage protection, like an extra skid plate.

Joshua Bello
five stars rating
Miller CAT - CAT Shield for 2021 Tundra TSS

The CAT shield arrived quickly, well packaged, and with all parts and instructions. Two college students installed the CAT shield for me in less than an hour without any issues. It would be nice to have an extension or addition piece covering the rear two catalytic converters. Only regret is I did not know about it before thieves stole my catalytic converters!

John Andrews
five stars rating
nice secuity

Would be great if I could protect rear 2 converters, but still nice for front 2 converters

five stars rating
Glad I got it when I did

The price went up the day after I ordered it. FAST shipping and had it installed the next day for $150. Of course, this is a purchase you can’t really see, but as long as it keeps thieves away I’m good. Great price and service!

five stars rating
Easy Install on 2019 Sequoia with 3/2 Lift

High quality product which shipped fast. Only took about 30 minutes to install. Very impressed with the appearance and glad we spent the extra money on this product rather than the other goofy looking products on the market. Excellent customer service from MillerCAT! Thanks for sending the bolts which didn’t make it the first time around!

Brad Trimble
five stars rating
Amazing fit and first class hardware

Total install time was 45 minutes and did not need to have the transmission and transfer case lifted….able to set rivet nuts with appropriate sized bolt oversized nut, flat washer and locking washer….would definitely buy if you want to protect catalytic convertors on Toyota Tundra 4X4 model

Robert Shellnutt
five stars rating
my Tundra can travel again!

With the insane prices on replacing cats, espec on a tundra, I had to get protection. I surfed all the options and bought the Millercat. I am very happy with it. Would make theft a much bigger job. My mechanic says it is well designed and manufactured. I would definitely buy again! (And will get some for my sons’ honda and altima.)

Note to millercat, you need to design additional (add on) protection for the back end of the back cats and let me know, I will buy! I doubt thieves would try to get those back cats out since they cant get access to the front end of the back cat, but why leave cookies on the counter?

Mark Barnett
five stars rating
Top Notch!

This product is way better compared to other competitors out there. I highly recommend this to my family and friends.

Ryan Maestro
five stars rating
Awesome product!!

Fit well!

Jon Hagood
five stars rating

I had Toyota Service install it (I work for Toyota). They said no issues. About 1 hour. Pleased I got it.

Andrew McDougall
five stars rating


Everardo Hernandez
five stars rating
Well worth the money

I highly recommend it, it was easy to assemble, and if you have the right tools you can just install it at home. I ended up installing it by myself with no problems.

five stars rating
highly recommend

Pretty easy install and looks great. I highly recommend this cat cage. Seen others but the beefy plates is what sold me. I had my catalytic stolen before and waited 6 weeks to get my truck back. So during the wait I ordered the Miller cat. I hope I never need it again but if I do, it’s on there!!!!

five stars rating
Installed and Pleased!

Had shield installed on my Sequoia last week at Toyota dealer, took them less than 30 minutes. They sent me photos when it was up on lift. Well designed product great fit and finish.

Jarrett Virkler
five stars rating
Great addition to deterring theft!

Well made and a perfect fit. Went together as expected. I used red lock tight on the wing portion. And torque as required, aluminum is easy to over torque. They cover the front cats completely and the front portion of the rear cats. I decded to etch the cats with my info before installing the shield to add further deterrent to any would be thief’s. For 4×4 tundra’s they recommend lifting the transmission to insert the rivet nut. I used a YouTube hack with a bolt that worked just fine and was far better than trying to loosen the transmission and lifting it. The install is easier if you lift the vehicle six to eight inches. Over all a piece of mind and a good investment in my opinion. Also so far no road noise and no heat issues. I wish they offered the option for spare hardware. And the ability to add pictures on the review, it is harder than the install.

Richard in Nor Cal
five stars rating
2021 Sequoia TRD PRO

Great product however I’m with everyone else. I wish it covered the rear Cats. Other than that it’s great quality and serves a great purpose thus far!

brian symcox
five stars rating
2021 Tundra 4WD

Nice product, thick aluminum, great security screws and easy install. Would love for y’all develop something that covers those rear catalytics all the way. Perhaps a guard for the Transfer case?

five stars rating
Nice Product

The shield arrived with no hardware, however, contacted support, hardware sent immediately. Upon receiving hardware, it was missing the nut plates. Contacted support, nut plates plates sent immediately. Finally got to install the shield. Upon trying to install M6 rivet nuts, the hole on the Tundra crossmember was too small. Had drill hole to next size to fit 12mm or 11/32. Installed rivet nut with no problems after that. Went to put the 12mm open/box end wrench on nut, did not fit, it was actually 13 mm. Instructions need updated, minor bump for those mechanically inclined. I would feel better if front nut plate had locking castle nut. May install one afterwards. Fit wise, the shield matched up perfectly to mounting locations.

But, once said, done and installed, the shield should do its job to keep the converters under the truck. Right now I hear at the dealship the converter wait is 2 months, due to all the thefts here in the greater Houston, TX area and no parts available.

Upon final shipment of hardware, $20 refund on purchase price, good customer service.

I recommend the product highly.

Houston, TX

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