Reviews

Which Mini Catalizador is best?Let our customers tell you.

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When you see what thousands of satisfied customers have to say, feel confident in purchasing the official Mini Catalizador®!

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👍 Did you fix the CEL?

96%

85%

2000+ people have voted

🗣️What our customers say

Had a P0420 code on my 350Z (VQ35HR) after installing HFCs. I installed the 90 degree mini catalizador. Cleared the code with an OBDII scanner. After ECU tested the catalytic converters, the code remained gone and car ready to pass the state smog test. Mini catalizador did what it was supposed to do.

– Steve D.

They are pure genius! My check engine light went off immediately! A mechanic friend of mine told me about them after he said they never failed him. They replaced having to get a new, pricey catalytic converter. Highly recommend!

– John Ochlan

Installation took about 15 minutes. Product was of great quality and exactly as advertised. It did exactly what I was hoping it would do. Best 70.00 I've spent in a long time.

– Kyle Rochelle

Within 24 hours of installation, my 2011 Camaro SS check engine light was adjusted by the ECM and disappeared from the dash. No issues for the past 72 hours. It appears to work as advertised.

– James Young

I admit I was skeptical, but I was so wrong! This adapter is the real deal. I’d been driving with a check engine light that had a mind of its own. After using this, it feels like my car finally got its act together. Smooth rides with no more worries about sudden breakdowns, and I’ve even noticed a slight boost in fuel efficiency. Count me impressed!

– R.G.

I don’t typically leave reviews, but this spacer truly deserves praise. My car was a wreck—check engine light always on and performance inconsistent. After installing this spacer, it feels like a brand-new ride! Smooth acceleration and no more annoying lights—it's a dream come true. If you’re facing car troubles, invest in this spacer; you won’t regret it!

– kelvin

I encountered a P0420 code after installing some faulty spark plugs that caused misfires. I decided to try this product, but it's essential to ensure everything else in your vehicle is functioning well first. For my setup, the straight design was ideal for the catalytic converter near the firewall, while a 90° would be necessary for front installation due to space. The installation was challenging, but it resolved my issue. Highly recommend!

– Samson Reed

Let customers speak for us

from 718 reviews

It actually works!

I have a 06 Matrix after using spray valve cleaner I got a P0420 code. I changed both sensors and used multiple bottles of cat cleaner. Spent hundreds of dollars with the light never going off. The car ran fine 30 MPG no soot. I installed this product 2 weeks ago and cleared the light. It has never come back on and no pre code when I check it. I wish I tried this first!

David Cappadona

01/25/2025

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Saved me money and time!

This part saved me so much! The upstream O2 was not working properly but I did not have the tools or money to get it replaced. I was able to use this on the down stream O2 sensor, that's easy to reach, and get my car smog checked and pass! Thank you so much to all those involved making this part and saving my low-income self from losing lots of money!

Gabby

01/11/2025

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (90 Degree)

Mini magic

Love the product plan to buy it again and again and again and again

Arthur Hamamdjian

01/03/2025

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Excellent Products!

I am so impressed with your products--nothing has worked to rid my car of the dreaded CEL light until now. I ordered the mini-cat 45-degree sensor spacer, and the 90-degree. Product is wonderfully well-built, and totally adjustable for fit. I found the 45-degree cat spacer fit best for my extremely tight space (2016 Cadillac ATS). Love how it fits, and how it works--no more CEL light!! Thank you for your fine products--you are an amazingly good company in a sometimes-shifty industry. I am very grateful for you!!

Joseph Leak

10/28/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Success

John Ochlan

10/27/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

I don’t have any problems. I received my delivery and everything is fine.

Jesus Hernandez

09/19/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Perfect. Fix

Was getting a check engine light for a O2 sensor issue. Installed this item, cleared the check engine light and so far it has t come back on.

Chris Martin

09/10/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Fast delivery thanks!

Joseph Gallo

08/31/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Impossible made possible

I was working on a 2004 Honda. Accord that wouldn't pass smog. the car came to
me in poor running condition. It had no power. To take off from a intersection you needed a head start. I discovered that the converter was plugged almost solid. I decided to cut a small hole to see if it ran better and it did. I gutted the cat and put it back together and it ran great. Now my thoughts were to buy a universal cat and be done with it. Well that did not go as planned because the state I live in banned universal cats for import cars and you had to get it from the dealership and the dealer wanted almost $2000 I was searching the net and ran across the Mini cat. I did not think it would work. But what the heck it's worth a shot so I ordered it. The cat was just a shell after I gutted it. I put it on and decided to try smogging the car. Well to my surprize the car passed smog Thanks to the Mini Cat....

michael lyman

08/14/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Excellent product

I will recommend it 💯 %. I bought this for my Chevy Cruise 2014
After I dis change the Catalytic Converter twice, the only solution to turn the check engine light was this product.
Fast delivery.
Good Price.

francisco j perez

08/10/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Entrega rápida es útil.

Melissa Friesen

01/05/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

It works well and fits well.

Estelle Sipes

01/05/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Muy buen producto y encaja perfectamente bien.

Margarita Jaskolski

01/05/2024

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

30-Day Risk-Free Trial with a 100% Money-Back Guarantee

We are confident in our Mini Catalizador, which is why we offer a 30-day money-back guarantee. From the day you receive our product, you can enjoy a risk-free trial for 30 days. If you are not completely satisfied with the results or the product does not resolve your car issues, you can request a full refund.

Quick shipping. Product looks good.

Fixed my p0430 code on 2002 es300

Have driven about 400 miles since installing this spacer and havent had my CEL come back. It was for bank 2 sensor 2 2002 es300. Code p0430

The item works great. Thanks

I great product

Works great

Gran compra

Muy buena compra

Granny's Car

She's back on the road. This Product worked extremely well. saved thousands of dollars. quick easy install. Thanks

Engine light be gone

I was troubled with a p0430 code for years. Installed this on bank 2 sensor 2 and boom code has not came back! Much cheaper than a catalytic converter.

Excelente

Excelente

Works real good good quality. Fast shipping

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

G82 M4 COMP

No issues so far and very easy install!

Great Catalizador

Thank you very much. I placed the catalizador on my car and the “check engine” light turned off. Super excellent piece!

"very nice, i like." - borat

first of all, ordered a couple of these a year ago for another car and they worked wonderfully. had a CEL on that car for maybe 3 years? replaced everything from the headers back and the p0420 code would not go away until i added these. i recently upgraded the exhaust on my other car, again from the headers back and added these to the system. no codes have come up yet. Definitely would recommend.

Works

Worked like a charm

Got rid of my p0420 code

Excelent work

Excelent work

Working great!

First thing I noticed was temperatures on my scan tool showing exact same temperature before and after the catalytic converter. No more low temp by 70° F after the cats. Still no light on after a week so we are good.

Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (Straight)

Check Engine Light Issues

Hello, so a customer of mine at the beginning of his inspection month would come by and I would shut his check engine light off and he would do the drive cycle, and we would get his sticker every year, by the way the codes were PO420 and PO430, so this year we did the same and no luck , I had used this device from a different manufacturer , difficulty in reordering and more money , so I found your product , one cheaper , two easier to purchase , and three works excellently , I'm sold , you have a new customer and a spokesman for you , I'm in business for over 40 years and know a lot of people and repair shops , thank you and looking forward to doing more business .any wholesale discounts , again than you
Michael Messina

Hi Michael,

Thank you so much for the kind words and for sharing your experience — we're truly honored to have you as a customer and advocate! It's great to hear that our product worked perfectly for you and made the process easier and more affordable.

Yes, we do offer wholesale discounts, and you can find all the details on this page:
https://www.minicatalizador.com/pages/wholesale

If you have any questions or need help with bulk orders, feel free to reach out anytime — we'd love to work with you more.

Thanks again, and looking forward to growing together!

Best regards,

Very good

2006 Tundra O2 Sensor Issue

The mini Catalizador seems to have fixed the problem with the check engine light

You were also very responsive to questions and I received the parts within 10 days of ordering

You won’t believe the quality of this catalytic converter adapter—sturdy build and great craftsmanship. Definitely a must-buy!

I was really impressed with the customer support—super professional, quick to respond, and took the time to address all my questions thoroughly. Great experience overall!

Great quick-fix product that boosted performance

saved me a lot on gas, and my vehicle runs like new. Definitely worth the money."

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Which Mini Catalizador is best?Let our customers tell you.

🗣️What our customers say

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Which Mini Catalizador is best?Let our customers tell you.

🗣️What our customers say

Let customers speak for us

30-Day Risk-Free Trial with a 100% Money-Back Guarantee

FREE SHIPPING

FREE RETURNS

Secure Payment

24/7 Support