MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™
MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™
GEN 2 installed!
MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™
MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™
MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™

MILLERCAT 2004-2009 Prius Gen 2 Cat Shield™

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Fits all 2004-2009 Prius Liftback Trims with OEM converters. Comes with Cat Shield, installation hardware, tamper-proof screw kit, Cat Shield Protected sticker, and detailed installation guide.

Our Aluminum Gen 2 Cat Shield ™ is fully removable, galvanic corrosion resistant, and has no large openings for thieves to cut through (but allows you to visibly see the converter part number to pass smog). We highly recommend pairing this shield with our Deadbolt. Recently there have been a number of incidents where experienced thieves are bypassing shields in areas with vehicles with a lot of shields. Owners in CA should consider this option.

Material:  Premium Grade 5052 Aluminum | 14 Gauge

Upgrade Options: MILLERCAT Custom Screw Kit. Info on screw options. Pair this shield with our Deadbolt for the ultimate protection and peace of mind.

Stainless steel version available. Stainless vs Aluminum

REQUIRED TOOLS FOR INSTALLATION. Rivet Nut Tool with M6 Mandrel/Head, 1/4" bit driver, 10mm socket, drill, and 25/64 drill bit (no pilot bit). Installation Guide

*Professional installation recommended.

FREE SHIPPING IN THE CONTINENTAL US! Orders will be shipped within 1 business day. Info on expedited shipping options.

* Item may have some surface finish imperfections.

Customer Reviews

Based on 49 reviews
Mechanic approved, gives peace-of-mind

Had my catalytic converter stolen (for the 2nd time!) recently and just got it replaced. When I first told my mechanic I wanted to get some sort of theft prevention device installed on my 04 Prius, he told me "there's no point in wasting your money, nothing offers good enough coverage, they'll just cut it on either side of whatever you put on and they'll take the whole thing". Decided to order this shield just so I could say that at least I tried instead of just letting it be a sitting duck. After the Millercat shield was installed, I got a call from my mechanic and he said he was impressed with the amount of coverage it gave to the car's underside and he believes that it will actually be an effective deterrent. He said that he's installed some protective measures before, but this was the best that he's seen. Needless to say, that gives me great peace-of-mind. No overheating, excessive noise, or vibrations either, gave 4 out of 5 only because I haven't seen it tested against a thief yet.

Ramona Sinclair
Hopefully this will protect my Cat

Thank you, Millercat, for making this shield to protect our cats -- was told it was easy to install, even with the improved bolts. No noise or vibration that I notice. I pray it works!

Alfred Valdez

The product is great. It looks like it would of help to have designed it a little longer. I did have some trouble getting the clearance under my Prius to install had to barrow a bigger jack and had to purchase a rivet gun. So had an extra expense. Let's see if it deters thieves. I do sleep better at night with the sheild installed.

Ray Briare
So far, so good

My mechanic and I each independently researched a solution so that my catalytic converter would not be stolen a second time. We both chose this one. Purchase and installation is about 10% of replacing catalytic converter. Went on quickly, no rattles, no problems. So far, so good.

Michael Lore
Easy to install protection

The shield is pretty easy to install if you've done mechanical work before and have a lift to get under the car. I think it will definitely slow down any thieves. I also got the rivet nut tool which is pretty solid. I had no vibration or other issues.