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

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

Regular price $59.99 USD
Regular price $69.99 USD Sale price $59.99 USD
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Full Refund if it doesn’t fix your CEL
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Eliminate the CEL. Unlock Your Exhaust’s True Sound.

Upgraded your exhaust and now stuck with that annoying check engine light? The Mini Catalizador O2 Sensor Spacer CEL Fix (90 Degree Pro) is engineered specifically to help you clear OBDII codes like P0420, P0430, and P0042 by simulating proper catalytic converter function. Designed for high-performance exhaust systems, this spacer features a larger built-in mini catalytic converter with superior catalytic action, providing enhanced effectiveness in eliminating emission-related fault codes.

The 90 Degree Pro is an extended version of the standard 90-degree model, offering extra internal volume and a high-efficiency catalyst element. It’s perfect for turbocharged 6-cylinder setups, V8s, V10s, V12s, and even 4-cylinder engines running high-flow or decat exhausts. The angled design provides additional clearance for tight engine bays, ensuring a clean and professional fit.

Crafted from high-grade stainless steel, the spacer has passed rigorous testing for durability, heat resistance, and performance stability. No tuning, no expensive repairs, and no hassle—just a simple screw-in installation that works.

Key Features:
Upgraded Mini Catalytic Converter for Superior CEL Elimination
90° Extended Angled Design for Tight Spaces and Large Engine Applications
✅ Effective on Turbocharged 6-Cylinder, V8, V10, V12, and High-Performance 4-Cylinder Builds
✅ Clears Common OBDII Codes Like P0420, P0430, P0042
✅ Made from High-Quality Stainless Steel with Heat-Resistant Coating
Simple Plug-and-Play Installation – No Welding, Cutting, or Tuning Required
✅ Designed for High-Flow Cats, Test Pipes, Headers, and Decat Exhaust Systems

Whether you're battling CELs after installing aftermarket exhaust components or looking for a reliable way to pass emissions readiness tests, the Mini Catalizador 90 Degree Pro keeps your dashboard clean and your exhaust flowing the way it was meant to.

Mini Catalizador – The Professional Solution for CEL Codes.

  • Applicable error codes: P0420, P0421, P0422, P0423, P0424, P0430, P0431, P0432, P0433, P0434. Notes:
  1. Install on the rear O2 sensor only. Installing on the front O2 sensor will not work.
  2. Before use, make sure the O2 sensor is functioning properly. This product is suitable for solving CEL issues caused by aged catalytic converters, catalyst mismatch, or low conversion efficiency after exhaust modifications.
  3. Do not overtighten during installation. If you feel strong resistance while tightening, stop immediately.
🔧

Is it compatible with my car?

Yes, if your vehicle uses an M18 x 1.5mm O2 sensor thread — fits 99% of cars.

📐

Which model should I choose?

Enough space: straight; Tight space: 45° or 90°. Unsure? Ask your mechanic.

📦

How many do I need?

One per exhaust pipe. Inline engine: 1 pc. V6/V8 dual exhaust: 2 pcs.

🇺🇸

Where is it made?

Made in the USA. Shipped from California, USA.

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60-Day Risk-Free Trial

Mini Catalizador Co., Ltd. set out to develop the highest quality car products, and we want you to share our confidence! That's why we back every sale with a 60-day money-back guarantee. If you're not absolutely satisfied with your order, please contact us and we'll get it fixed!

Delivery Information

We ship all orders from California, USA. Orders placed before 2:00 PM PT ship the same business day. Orders placed after the cutoff time will ship the next business day.

Shipping Options:

Standard (Free)
Shipped via USPS Ground Advantage.
delivery time: 3–7 business days (shipping time only, processing time not included).

Expedited (+$60.00)
Shipped via Amazon Shipping, USPS Priority Mail Express, or UPS 2nd Day Air®, depending on your location and availability.

Estimated delivery time: 1–2 business days (shipping time only, processing time not included).

Please note:

  • UPS 2nd Day Air® delivers on business days only (no weekend delivery), and weekend days are not counted in transit time.
    Amazon Shipping and USPS Priority Mail Express support weekend delivery in most areas.
    All delivery estimates are calculated from the day the carrier scans the package.
  • Delays may occur during severe weather or holiday periods.

In most cases, up to 60% of expedited orders are delivered within 1 business day. This is possible because we operate multiple warehouse locations across the United States, giving us a strong nationwide supply chain advantage.

We will always do our best to ship your order as quickly as possible. Thank you for your understanding and support!

How to Install?

Please click the link https://www.minicatalizador.com/pages/how-to-install to watch the installation video.

IMPORTANT

CHOOSE MINICATALIZADOR.COM WITH CONFIDENCE

⚠️Authentic Mini Catalizador® is exclusively sold on our official website. Watch out for scams on another website. Guarantee yourself a genuine experience by purchasing directly from our website.

🚨Unlike cheap zinc-plated carbon steel products, our T-304 Premium Stainless Steel won't rust, fail, or damage your car at high temperatures. Don’t risk purchasing inferior imitations—choose the official certified product you can trust!

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This O2 sensor spacer effectively resolves P0420/P0430 engine codes for most customers. Shoppers praised its "excellent machining quality," easy installation, and value. Many reported the check engine light cleared immediately, with one noting it "works like a champ." However, one customer experienced a new code after installation. Overall, customers recommend it as a cost-effective alternative to mechanic visits.

  • 5 stars: 1766 (94%)
  • 4 stars: 66 (4%)
  • 3 stars: 20 (1%)
  • 2 stars: 13 (1%)
  • 1 star: 14 (1%)
Some of the reviews shown are from related products the merchant grouped with this one.
J
JW Wiggins (United States)
Perfect Fit and Easy Install

It is just perfect for my car. It couldn't be any better—thank you, thank you, thank you! Easy installation. No problems at all. I'd buy 10 more times!

A
Anonymous (United States)
Year / Make / Model: 2023 Honda Civic Si
Works Great!!!

Used it on my innovatig catless dp set up and its been 9 days, so far no CEL!

A
Anonymous (United States)
Year / Make / Model: Toyota Corolla 2004
Hasta ahora a funcionado perfecto

Hasta ahora a funcionado perfecto, se apagó la luz y pasé la emisión inspección

C
Carson Tsui (United States)
Year / Make / Model: 2013 Infiniti G37x
Great company!

Great support, my item was lost in the mail but the support team was great and sent out a replacement, it got here quickly. Highly recommend!

C
Christopher Acosta (United States)

Out of all the o2 spacers I’ve tried this one finally did it! Took a gamble for $24.99 and I actually worked! I’m running a custom stage 2 tune and my tuner didn’t enable open loop for my catless downpipe so I’ve been running with with a cel for a couple years, I found this one online and saw so many positive reviews I had to try it and after 300miles still no check engine light for the downstream o2. I couldn’t be happier with the results!!

N
Nelson Ashford (United States)

A spacer in the bay keeps the CELs away. I’m running an ARM catted down-pipe on my MK7 GTI that gave me a nice Check Engine Light every 30-40 miles. After about 4 of those lights, I ordered this spacer and haven’t had a light since. Another perk of this spacer is that it’ll give you a little more slack to properly run your O2 sensor cable through the cable holders on the firewall.

D
Donna Bennett (United States)
WORKED perfectly!

This worked awesome!

R
Robert Wiegman (United States)
Highly recommended

After installing new catless downpipe my downstream 02 sensor wouldn't fit , it would hit firewall so I needed a 90° spacer and not only did this work but looks amazing and just feels solid and can tell it's made from quality material.

F
Faye Mansueto (United States)

Super easy to install and got rid of the check engine light after the downpipe install. Wish I would have done it sooner.

m
michael wagner (United States)
Year / Make / Model: 2013 Audi S4
No More Check Engine Light!

I bought these Mini catalizador along with the test pipes and installed them on my 2013 Audi S4. Over a year later, and the check engine light has never come on. Awesome product!

S
Seyed Amir Hosseini (United States)
Good choice

Emissions warning light came on, but this fixed it. The adapters did the trick and cleared the issue. I also switched to using mid-grade 89 octane instead of the lowest grade fuel, and since then the emissions warning light hasn’t come back.

D
Denzel Ezeigbo (United States)
GR86 P0420 Code

After installing the HKS GT manifold with cat, I started getting a check engine light for P0420. Installed this piece, cleared the code once, and it hasn’t come back since — even with spirited driving. Installation was quick and straightforward.

S
SEAN BROSNAN (United States)
Parts

Great parts and fast shipping

M
Mike (United States)
O2 sensor spacer

Well constructed. Fit perfectly. De-sensitized feedback enough to keep CEL off. I would buy again.

G
Gabriel Zeleniuk
Year / Make / Model: 2019 Dodge Charger R/T Scat Pack
Worked perfectly.

Worked perfectly.

A
Anthony A. (United States)
Awesome product.

P0430 code gone.

R
Robert Rocke (United States)
Great service delivery on time 😉

They took care of the issue I was having. MINI CATS is the Company to order car parts from. They are quick on delivery also. I highly recommend them.

A
Alex (United States)
It really works

It really works. I have been fighting a 20 year old BMW to get it to pass. Car was in stock condition but the cat is just shot. I refuse to replace it. Just too expensive. Tried less sensitive o2 sensors, spacers, foam filters. The foam was the closest. It worked intermittently, but it's a BMW so even once light and it fails. Put this on, drove 60km. *Ding* "Catalytic System Ready" 🙌

A
Alex Savin (United States)
Perfect

Product works great, quick shipping

M
Mitch Smith (United States)
Excellent car part

Very smooth ordering and shipping process.

J
Jose Mayorga (United States)
Spacer

It was easy to install and fixed my problem! Thanks

C
Chuck Powera (United States)
Works like a champ

Used this to trick a rear 02 in a rock buggy, worked like a charm.

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❤️Trusted by over 100,000 U.S. customers us

⚠️ Important Notice: Beware of Counterfeit Mini Catalizador Products

We have recently received numerous complaints from users, experiencing serious vehicle malfunctions and damage after purchasing Mini Catalizador products from unauthorized channels. To ensure your safety and rights, please make your purchase only through official channels: our products are sold exclusively on www.minicatalizador.com and through authorized distributors. Please look for the laser-engraved logo: all genuine products carry our exclusive laser-engraved mark. Products without this logo are likely to be counterfeit. Thank you for your trust and support. — The Mini Catalizador Team

 
WE
OTHERS
Money-Back Guarantee if Ineffective
60-Day Hassle-Free Returns
Official Website Guarantee
Google 4.8-Star Reviews
Compatible with All Vehicles
Made from 304 Stainless Steel
Euro 6 Catalytic Standard Core
Heat & Corrosion Resistant – Engine Safe
Expert Customer Support

QUESTIONS? WE HAVE ANSWERS

What causes the Check Engine Light (CEL) to turn on?

The Check Engine Light (CEL) can turn on for various reasons, with a faulty catalytic converter being one of the most common causes, especially when P0420/P0430/P0042 codes are present. When the catalytic converter's efficiency drops or it gets damaged, exhaust pollutants are not fully converted, triggering the CEL.

Common signs of a faulty catalytic converter include:

  1. Check Engine Light (CEL): Common codes like P0420 (Catalyst System Efficiency Below Threshold Bank 1) and/or P0430 may appear.
  2. Lack of Power: Noticeable power drop after the vehicle warms up.
  3. Speed Limitation: Difficulty in exceeding speeds of 30-40 mph (48-64 km/h).
  4. Unpleasant Odors: A rotten egg smell coming from the exhaust.

If you detect these codes, our product is the ideal solution.

What is Mini Catalizador?

Note: Don’t just rely on using an extender, as they often don’t work. Our Mini Catalizador CEL FIX is an innovative solution that incorporates a built-in mini catalytic converter, meeting European 5 standards. It is specifically designed to effectively resolve CEL issues caused by high-flow catalytic converters (HIFLOW Cat), deleted catalytic converters, or faulty catalytic converters.

How it Works:

First, by adjusting the position of the second O2 sensor, moving it away from the direct exhaust flow, our built-in mini catalytic converter starts to function. Its operation is similar to a traditional catalytic converter, converting harmful exhaust gases into harmless substances. This effectively "tricks" the ECU into thinking the catalytic converter is still working, helping eliminate the annoying Check Engine Light (CEL) and resolve persistent error codes such as P0420 and P0430. This solution is especially suitable for vehicles with modified exhaust systems, vehicles that have deleted the stock catalytic converter, or those with faulty catalytic converters.

Benefits:

  1. Optimizes Fuel Efficiency: A worn-out oxygen sensor can lead to excessive gasoline consumption and accelerate catalytic converter damage. Our Mini Catalizador helps optimize fuel efficiency, reduces emissions, and makes the engine more eco-friendly.
  2. Emission Compliance: In regions with emission inspection requirements, a faulty CEL and O2 sensor may lead to inspection failure. Our product eliminates the CEL light, ensuring your vehicle complies with emission standards and passes inspections smoothly.
  3. Solves Common Fault Codes: Our solution addresses common fault codes like P0420, P0042, and P0430, ensuring your vehicle runs smoothly and reducing the risk of more significant problems.

Overall, the Mini Catalizador CEL FIX provides an easy and effective solution for modified, deleted, or faulty catalytic converter vehicles, ensuring emission compliance and optimizing vehicle performance.

What is the Mini Catalizador made of?

The Mini Catalizador is made from T-304 stainless steel, which offers excellent corrosion resistance, rust resistance, anti-flaking, and anti-bubbling properties.

Compared to other similar products, the advantages of Mini Catalizador include:

Material: The Mini Catalizador uses T-304 stainless steel, while some other products may use galvanized carbon steel filled with steel wool. Galvanized carbon steel can bubble, flake, and rust in high-temperature environments, while T-304 stainless steel has better high-temperature performance and corrosion resistance, allowing it to operate stably at temperatures exceeding 620°F.

Durability: Due to the use of high-quality stainless steel, the Mini Catalizador will not rust, corrode, or suffer other damage, making it more durable than many cheaper products. This reduces issues caused by metal corrosion.

Efficiency: The Mini Catalizador is equipped with a three-way ceramic honeycomb element coated with platinum, rhodium, and palladium, which effectively converts harmful exhaust gases, just like the vehicle's original catalytic converter. This helps eliminate oxygen sensor error lights (CEL). In contrast, some cheaper products may lack this conversion efficiency, leading to more frequent failures.

Easy Installation: The Mini Catalizador is very easy to install, requiring no welding or cutting—simply screw it into the existing O2 sensor interface. This makes it more convenient than other products that require complicated installation processes.

Is the Mini Catalizador compatible with my vehicle?

Mini Catalizador is a universal product designed to fit O2 sensor interfaces with M18 x 1.5mm threads, compatible with 99% of vehicles on the market, including but not limited to BMW, Audi, Toyota, Nissan, Honda, Ford, Chevy, Subaru, Mazda, Volkswagen, Mitsubishi, Hyundai, Kia, Lexus, Chrysler, Dodge, and more.

Which angle should I choose?

Based on your exhaust system layout and available space, choosing the right Mini Catalizador spacer angle is crucial. We now offer five angle options: 0° (straight), 45°, 45° Pro, 90°, and 90° Pro, all compatible with vehicles that have M18 x 1.5mm O2 sensor bungs. Each angle suits different installation conditions:

0° (Straight):
Ideal for vehicles with sufficient straight space in the exhaust system, offering simple and direct installation.

45°:
Suitable for exhaust systems with limited space, helping to adjust the O2 sensor position for a proper fit.

45° Pro:
Upgraded version of the 45° design, optimized for better performance and a higher success rate in resolving check engine lights, while still fitting well in moderately tight spaces.

90°:
Best for tight or hard-to-reach areas, providing flexibility for installation in compact spaces.

90° Pro:
Upgraded version of the 90° design, featuring enhanced internal structure for improved performance and higher success rate in resolving check engine lights, especially on more sensitive or modern vehicles.

For the best fit, choose the angle that matches your vehicle's exhaust system layout. If you're unsure, it's recommended to consult your mechanic, who can suggest the most suitable option based on your vehicle’s specific needs.

How many Mini Catalizador do I need?

The number you need depends on your vehicle’s exhaust system:
Single exhaust pipe: You need 1 Mini Catalizador
Dual exhaust pipes / V6 / V8 engine: You need 2 Mini Catalizadores (one for each exhaust pipe)

💡 Simple rule of thumb: Count your exhaust pipes — get one Mini Catalizador for each.

If you're unsure, it's best to consult a professional mechanic to ensure you purchase the correct quantity.

How to install Mini Catalizador?

Installation Steps:

  • Jack up car if necessary, find extended bung which need to replace.
  • Loosen old oxygen sensor spacer, bolt it on our new sensor spacer.
  • Bolt new sensor spacer to pipe by hand firstly. Tighten with a wrench.
  • Please click the link https://www.minicatalizador.com/pages/how-to-install to watch the installation video.

Note: Before installation, make sure all parts of the product are intact, and ensure that the top cover is tightly secured; otherwise, the cover may come loose and be lost.

Customer Notification and Disclaimer of Liability

This is a race-only product. It is not legal for sale or use on pollution-controlled vehicles that are driven on public streets, roads, or highways. Buyer's use or installation of this product for itself or for Buyer's customer is at Buyer's own risk. The Buyer is responsible for obeying federal, state, and local laws. Only Buyer can determine the end customer's use and thus assumes any and all liability, hereby waiving any and all claims against Minicatalizador.com in the sale of this product to the maximum extent permissible by law. Make sure to abide by all local, state, and federal laws, including emissions, vehicle safety, and traffic laws. It is Buyer's responsibility to know what those laws are and how they apply to Buyer or Buyer's customer. This product is designed and intended solely for legally-organized and sanctioned, closed-course, off-road competition use and is not for use on public streets, roads, or highways. This Product is capable of disabling the emissions system on some vehicles. Use on public streets, roads, or highways is a violation of federal and certain state (including California) and local environmental laws.

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HOW IT WORKS 👇

  • SMART DESIGN

    Our NEW O2 Sensor Spacer with real 400cel precious metal mini Catalytic Converters and EU5 coating. We started with a simple o2 spacer, but then we've gone a step further by having built-in catalytic converters to allow the ECU to properly read exhaust gasses and perform at an optimal level.

  • EASY INSTALLATION

    Our NEW O2 Sensor Spacer is useful for vehicles with failing catalytic converters, as it turns off the check engine light and eliminates stubborn Check Engine Light (CEL) codes, including P0420, P0430, and P0042. It's especially beneficial for modified competition vehicles.

  • PERFECT SOLUTION

    Our Mini Cat is useful for vehicles with failing catalytic converters, as it turns off the check engine light and eliminates stubborn Check Engine Light (CEL) codes, including P0420, P0430, and P0042. It's especially beneficial for modified competition vehicles.

🚛Fast Delivery In The U.S.!

At Minicatalizador.com, our goal is to deliver your package as safely and quickly as possible. We deliver nationwide, from Bellingham, Washington to Imperial Beach, California and Madawaska, Maine to Key West, Florida – and everywhere in between. We want everyone to enjoy our benefits.

🛡️60 Days Money Back Guarantee

We are 100% convinced of our Products! That's why we give you a 60 day money back guarantee. If you are not satisfied, just send us a message to service@minicatalizador.com and we will find a customer-oriented solution.