FREE SHIPPING
🇺🇸: 2-5 Days Delivery.
Top Quality Store 4.8/5 Rating
Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (45 Degree Pro)
Mini Catalizador O2 Sensor Spacer CEL FIX P0420/P0042/P0430 Code Universal (45 Degree Pro)
Regular price
$57.99 USD
Regular price
$67.99 USD
Sale price
$57.99 USD
Unit price
per
Taxes included.
🚚Free & fast shipping from USA.
Best Seller in Check Engine Light Fix Tools
Full Refund if it doesn’t fix your CEL
Couldn't load pickup availability
AUTOMATED ORDER PROCESSING
To ensure fast fulfillment and delivery, orders are processed automatically after purchase.
Please verify your shipping address before payment.
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 (45 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 45 Degree Pro is an extended version of the standard 45-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
✅ 45° 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 45 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:
- Install on the rear O2 sensor only. Installing on the front O2 sensor will not work.
- 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.
- 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.
Wholesale
Buy 10+ and save 40% instantly!
60-Day Risk-Free Trial
Mini Cat Automotive Inc. 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!
How to Choose the Right Mini Catalizador®
How to Choose the Right Mini Catalizador®
Choosing the right Mini Catalizador® is simple. Just follow these three steps:
1. Check Your O2 Sensor Thread
Our Mini Catalizador® O2 sensor spacers use a universal M18 × 1.5 thread and are designed for most vehicles with a threaded downstream (post-cat) O2 sensor.
Important: The spacer is installed on the downstream/post-cat O2 sensor, not the upstream/pre-cat sensor.
2. Choose the Right Angle
Choose the angle based on the available space around your downstream O2 sensor:
- Straight (180°) – Best when there is plenty of space around the O2 sensor.
- 45° – A good choice when moderate clearance is needed.
- 45° Pro – Same 45° angle, but with a larger internal catalytic core for stronger performance.
- 90° – Ideal for tight spaces and our most popular option.
- 90° Pro – Same 90° angle, but with a larger internal catalytic core for stronger performance.
Tip: If you're not sure which angle to choose, the 90° version is usually the easiest to install in tight areas.
3. Choose the Correct Quantity
The number of Mini Catalizador® spacers you need depends on the number of downstream/post-cat O2 sensors on your vehicle.
Install one spacer for each downstream/post-cat O2 sensor.
For example:
- 1 downstream O2 sensor → 1 spacer
- 2 downstream O2 sensors → 2 spacers
On many 4-cylinder vehicles, there is usually 1 downstream O2 sensor.
Many V6/V8 vehicles have 2 downstream O2 sensors, typically one for each bank, so 2 spacers are usually required.
What About P0420 or P0430?
P0420 and P0430 are catalytic-efficiency related trouble codes and can help identify which bank is reporting the issue.
However, the code alone does not determine how many spacers you need.
The safest way to choose the quantity is to count the downstream/post-cat O2 sensors on your vehicle and install one spacer on each one.
P0420 → Bank 1 catalytic efficiency code
P0430 → Bank 2 catalytic efficiency code
If your vehicle has both codes and has two downstream O2 sensors, 2 spacers are typically recommended — one for each downstream O2 sensor.
Quick Guide
Thread: M18 × 1.5
Installation position: Downstream / post-cat O2 sensor
Quantity: 1 spacer per downstream O2 sensor
Angle: Choose based on available clearance
Not sure which angle? 90° is the most popular choice for tight spaces.
Delivery Information
Delivery Information
All orders are shipped from our U.S. warehouses.
Order Processing
Processing Time: 1 business day (Monday–Saturday)
Order Cut-Off Time: 2:00 PM PT, Monday–Saturday
Orders placed after the cut-off time will be processed on the next business day.
No orders are processed or dispatched on Sundays (carrier services may be unavailable).
Please note: Processing time is separate from transit time. Shipping time begins after your order has been processed and handed over to the carrier.
Shipping Options
We offer three shipping methods:
Standard Shipping — FREE
Carrier: USPS Ground Advantage
Estimated Transit Time: 3–7 business days (shipping time only, processing time not included)
Standard Shipping is our free delivery option. While most packages arrive within the estimated timeframe, USPS delivery times may occasionally take longer due to factors outside of our control.
Possible causes of delays include:
- Severe weather conditions
- High holiday shipping volumes
- USPS processing center delays
- Carrier network disruptions
- Unexpected transportation issues
In some cases, USPS packages may remain at a processing facility for several days before tracking information is updated. Your package is still considered in transit while USPS continues processing.
Please note that USPS Ground Advantage is an economy shipping service. Delivery times may vary depending on your location, weather conditions, carrier workload, and other external factors.
Expedited Shipping — $20.00
Carrier: Amazon Logistics, USPS Priority Mail, or UPS 2nd Day Air® (depending on your location and availability)
Estimated Transit Time: 2–3 business days (shipping time only, processing time not included)
Expedited Shipping provides faster delivery than Standard Shipping and is recommended for customers who need their orders sooner.
We work with trusted logistics partners, including Amazon Logistics, to provide reliable and efficient delivery services. Amazon is only used as a third-party delivery partner, and we do not sell products through Amazon.
Express Shipping — $40.00
Carrier: Amazon Logistics, USPS Priority Mail Express, or UPS 2nd Day Air® (depending on your location and availability)
Estimated Transit Time: 1–2 business days (shipping time only, processing time not included)
Express Shipping is our fastest delivery option.
Depending on your location and package availability, we may use Amazon Logistics to provide fast and reliable delivery service.
Important Notes:
- UPS 2nd Day Air® delivers on business days only. Weekends and holidays are not counted as transit days.
- Amazon Logistics and USPS Priority Mail Express may provide weekend delivery in many locations.
- Delivery time is calculated from the date the carrier scans your package.Ex
- pedited and Express delivery times are estimates and are not guaranteed due to possible carrier delays.
- Severe weather, holiday periods, high shipping volumes, and carrier processing delays may affect delivery times.
Thanks to our multiple U.S. warehouse locations, some expedited and express orders may arrive faster depending on inventory availability and destination.
Couriers Used
We work with trusted shipping partners, including:
- USPS
- UPS
- Amazon Logistics
Amazon Logistics is used only as a delivery service partner to provide reliable and fast shipping. We do not sell products through Amazon.
The carrier used for your order may vary depending on your shipping address, package size, inventory location, and service availability.
Shipping Delays
Although we work hard to ensure timely delivery, occasional delays may happen after your package leaves our facility.
Delays may occur due to:
- Weather conditions
- High shipping volumes
- Carrier processing center backlogs
- Transportation disruptions
- Unexpected circumstances
If your tracking information shows that your package is delayed or remains at a carrier processing center, please allow additional time for carrier processing.
Sometimes packages may stay at a USPS or carrier processing center for several days without new tracking updates. This does not necessarily mean the package is lost; it may still be moving through the carrier network.
If your package is delayed, we will assist in contacting the carrier and monitoring tracking updates when necessary.
Order Notifications
After placing your order, you will receive an order confirmation email with your order details.
You will also receive email notifications when:
- Your order has been shipped
- Your package is out for delivery or delivered (when carrier tracking updates are available)
If the phone number provided during checkout is registered with WhatsApp, we will also send WhatsApp notifications:
- One notification after your order is placed
- One notification when your order has been shipped
Please make sure your email address and phone number are entered correctly at checkout to ensure you receive all order updates.
Shipping Costs
- Standard Shipping: Free
- Expedited Shipping: $20.00
- Express Shipping: $40.00
International shipments may require additional shipping charges depending on the destination and customs requirements.
Tracking
All orders include tracking information.
Customers can monitor shipment progress from dispatch until delivery.
Please note that tracking updates may occasionally be delayed while carriers process packages, especially during high-volume periods or unexpected service disruptions.
Cancellations
Orders can be canceled before shipment.
Once an order has been dispatched, please refer to our refund policy for further assistance.
Damaged Packages
If your package arrives damaged, please refuse delivery if possible and contact our customer service team immediately.
If the package was delivered while you were unavailable, please contact us with photos and order details so we can assist you.
Customer Support
WhatsApp: +1 636 775 6668
Email: service@minicatalizador.com
North America Office:
1400 University Ave, Riverside, CA 92507, USA
How to Install?
How to Install?
Please click the link https://www.minicatalizador.com/pages/how-to-install to watch the installation video.
IMPORTANT
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!
This O2 sensor spacer is designed to address CEL codes like P0420, P0430, and P0042 with a universal 45-degree angle design. Customers said the product is 'nice' and gave it a positive rating, indicating satisfaction with the catalytic converter fix solution.
Some of the reviews shown are from related products the merchant grouped with this one.
K
Year / Make / Model: 2017 VW MK7 GTI
I had my doubts, but it worked perfectly. Installed it in my GTI with an IE catted down pipe, and took care of the readiness checks so it would pass emissions. Passed without any trouble…!! 😎
J
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
Year / Make / Model: 2023 Honda Civic Si
Used it on my innovatig catless dp set up and its been 9 days, so far no CEL!
A
Year / Make / Model: Toyota Corolla 2004
Hasta ahora a funcionado perfecto, se apagó la luz y pasé la emisión inspección
C
Year / Make / Model: 2013 Infiniti G37x
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
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
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
This worked awesome!
R
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
Super easy to install and got rid of the check engine light after the downpipe install. Wish I would have done it sooner.
m
Year / Make / Model: 2013 Audi S4
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
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
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
Great parts and fast shipping
M
Well constructed. Fit perfectly. De-sensitized feedback enough to keep CEL off. I would buy again.
G
Year / Make / Model: 2019 Dodge Charger R/T Scat Pack
Worked perfectly.
A
P0430 code gone.
R
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
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
Product works great, quick shipping
M
Very smooth ordering and shipping process.
❤️ Trusted by over 200,000 U.S. customers
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
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.
-
Unlocking the Purpose of a Mini Catalizador (Ox...
A Mini Catalizador, also known as an O2 Sensor Spacer, is a compact yet essential component in modern automotive exhaust systems. Its primary role is to enhance the performance and...
Unlocking the Purpose of a Mini Catalizador (Ox...
A Mini Catalizador, also known as an O2 Sensor Spacer, is a compact yet essential component in modern automotive exhaust systems. Its primary role is to enhance the performance and...
-
Mini Catalizadors (Oxygen Sensor Spacers): Func...
What Is a Mini Catalizador? A Mini Catalizador, also known as an O2 Sensor Spacer, is a compact mechanical device designed to modify the position of the oxygen sensor in...
Mini Catalizadors (Oxygen Sensor Spacers): Func...
What Is a Mini Catalizador? A Mini Catalizador, also known as an O2 Sensor Spacer, is a compact mechanical device designed to modify the position of the oxygen sensor in...
-
Widespread “Check Engine” Alerts Linked to Cata...
In recent months, auto repair shops across the U.S. have reported a surge in P0420 and P0430 error codes caused by inefficient catalytic converters, triggering one of the most common...
Widespread “Check Engine” Alerts Linked to Cata...
In recent months, auto repair shops across the U.S. have reported a surge in P0420 and P0430 error codes caused by inefficient catalytic converters, triggering one of the most common...
