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MillerCAT Corp

Toyota Tundra 4x4 (2018-2021) Rear Shield Add-on

Toyota Tundra 4x4 (2018-2021) Rear Shield Add-on


Regular price $70.00 USD
Regular price Sale price $70.00 USD
Sale Sold out
Shipping calculated at checkout.

The installation of the Rear Shield (x2) add-on provides complete protection for all four converters for your 2018-2021 Toyota Tundra 4x4Each order comes with one left and right rear shield and hardware.

If your Toyota Tundra is from 2007-2017, this product will NOT fit your vehicle. The reason the rear wings will not fit these years is because of a missing mounting point. 

Free Shipping Info

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

Expedited Shipping Info

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. 

International Purchases

If you wish to make an international purchase please contact us at 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.

Warranty Information

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.

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Customer Reviews

Based on 24 reviews
Joel Peoples


John H
Perfect fit - 2020 Tundra Crewmax 4x4 limited

Not much to say other than the fit was perfect. I have a 2020 Tundra Crewmax 4x4 limited. Used a skateboard and wood blocks to position the shield. Installed the rear 1/4” bolts first then the rest. No need to move the transfer case. I used a small ratchet box wrench with a screwdriver attachment to tighten that one tight bolt. Impact and swivel head on the rest. Red loctite on all security screws. Make sure you buy the rivet nut tool.

Jerry Buxton
Cat shield add on

Worked perfectly, used on a 2007 tundra, we just drilled a couple of holes in the frame to make it work. I would have spent a little extra for added thickness of the add on.

Josh G
Peace of mind

Awesome product for my 2014 Tundra. Fit like a glove, fast shipping, high quality, and easy to install.

My catalytic converter was stolen in Dallas a few weeks ago. Of all the options Millercat offered the best protection and best overall solution for protecting my Cats. Feels much better to know it’s much more protected now wherever I go!

K Jackson
Easy to install

Easy to install