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MILLERCAT 2005-2015 Toyota Tacoma 4.0L 4WD Cat Shield

Will not work with Lift Kits that modify the chassis crossmember! 
Protect your Toyota Tacoma 2nd Generation 4.0L 4X4 with our Cat Shield. (2WD version will be available soon) Our three piece design is a complete bolt-on application (no rivet nuts or drilling needed) that provides the highest level of deterrence against catalytic converter theft.

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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.

Material:  Select either 304 Stainless Steel (16 gauge) for the ultimate deterrence or 5052 Aluminum (12 gauge). Find out more about the difference in material here

– Our shields come with the industry leading tamper-proof screws that you cannot purchase anywhere while other competitors use common torx bits.

– Our Tacoma shield minimizes holes for thieves to cut through. Our stamped louvers and logos provide ample heat dissipation while showing that your shield was made with MILLERCAT quality and manufacturing capabilities.

*Professional installation recommended. 

** Our Tacoma Shields are designed with the assumption your vehicle has a Radiator Support Splash Shield installed. Toyota Part Number 51406-04020. 

Installation Guide 

  1. Unpack the Shield Kit: Ensure all components of the Toyota Catalytic Converter Shield are present.
  2. Dry Fit the Shield: Position the Toyota Tacoma catalytic converter shield over the catalytic converter to understand the alignment.
  3. Mark Mounting Points: Use a marker to outline where the shield’s mounting holes align with the underbody of the truck.
  4. Drill Holes (if needed): Drill holes at the marked points using an appropriate metal drill bit.
  5. Position the Shield: Place the shield over the catalytic converter and align it with the drilled or existing holes.
  6. Secure the Shield: Using the provided hardware, bolt the shield into place. Start the bolts by hand, then tighten with a socket wrench.
  7. Torque Bolts: Use a torque wrench to tighten the bolts to the manufacturer’s specifications.
  8. Check Alignment and Security: Ensure the shield is securely mounted and does not interfere with any other components.
  9. Lower the Vehicle: Remove the jack stands and carefully lower the vehicle back to the ground.


Final Check:

  • Remove all tools and materials from under the vehicle.
  • Start the vehicle and listen for any unusual noises indicating improper installation.


Maintenance Tips:

  • Regularly check the Toyota Catalytic Converter Shield to ensure it remains securely attached.
  • Inspect for any signs of tampering or damage periodically.


By following this detailed guide, you can successfully install the MILLERCAT Cat Shield on your 2005-2015 Toyota Tacoma 4.0L 4WD, protecting your catalytic converter from theft.

View This Related Product: Toyota Tacoma 2.7L 2005-2015 Cat Shield

Customer Reviews Toyota Tacoma 4.0L 4WD Catalytic Shield

five stars rating
Cat shield for 2007 Tacoma

The whole experience was awesome. It arrived very quick and installation was simple. I loved the bolt-on feature as I really did not want to drill holes in the frame as I have read from other competitors that were selling similar shields.

five stars rating
2013 Tacoma

Fits good and easy to install.

five stars rating
Miller cat

Works and fits good 👍

five stars rating

Great fit, good instructions, easy install and piece of mind.

five stars rating
Perfect fit, easy install Catshield 2006 Taco

Got this for my 06 Taco double cab TRD. I was able to do this myself in about an hour from the paper instructions provided and previewing a utube installation video. Tips include hand tighten the mount screws so you can adjust the front/back attachments, then go back and tighten everything after the loose mount. I started with the back 2 piece brackets then secured the shield from the front using my knees for shield piece support. With the front 3 holes attachment loose, i proceeded to the back 2 attach points with the long screws and supplied washers, followed by the remaining 3 shield to back bracket closeout. As advertised, this was successfully installed with no added drilling required. Highly recommend!

Sara L