180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat - O2 Sensor Spacer
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180 Degree Universal M18x1.5 O2 Sensor Spacer with Mini Cat

$23.59 USD
$29.59 USD
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Description

Oxygen Sensor Spacer Adapter CEL Eliminator with Mini Catalytic Converter – Fix P0420/P0430 Check Engine Light

Why Install an O2 Sensor Spacer?
A faulty or removed catalytic converter, or a downstream O2 sensor issue, can cause:

  • Excessive fuel consumption
  • Increased exhaust emissions
  • Accelerated catalytic converter damage
  • Poor engine performance

If your state enforces vehicle emissions inspections, a Check Engine Light (CEL) triggered by O2 sensor readings can cause you to fail the test.

This product helps address common fault codes such as P0420, P0042, and P0430.

Features

  • Built-in M18x1.5 miniature catalytic converter to help eliminate CEL after catalytic converter removal or modified exhaust installation
  • Premium stainless steel construction for durability and high-temperature resistance
  • Prevents CEL by filtering emissions through the integrated mini catalytic converter
  • Direct bolt-on installation — no modifications required

Specifications

  • Condition: 100% Brand New
  • Material: Premium Stainless Steel
  • Color: See Product Images
  • Type: Oxygen Sensor Spacer
  • Fitment Type: Direct Replacement
  • Thread Size: M18 x 1.5

Fitment

  • Universal fit for all vehicle models

Package Includes

  • 1 × 180° O2 Oxygen Sensor Spacer

Shipping Information

  • Delivery Time: 2–5 Business Days
  • Free Expedited Shipping From California

Shipping and Returns

Return Policies

Pairs well with

Customer Reviews

Based on 42 reviews
95%
(40)
5%
(2)
0%
(0)
0%
(0)
0%
(0)
R
Richard S.

Nissan p0420 Issue
As the title says, I ran into this problem with my Nissan. New cats are about a grand installed so I ventured the webs and stumbled across this adapter…. After replacement, it took around 12 cycles to pop the light off naturally. Worked like a charm. If i run into this issue again, I know where I’m headed. BIG THANKS

J
Jesse Mitchell

Easy to install
I installed 2 adapters on my back 2 O2 sensors. They fit perfectly. No issues and they did not interfere with anything on the truck (Nissan armada). I drove it 25 miles with no CEL. Hope it lasts for a while.

C
C.L.

It arrived on time
I got this item and it arrived on time.
Very good quality.

J
James Zulauf

So far so good
400 miles and it hasn’t thrown a cat code. My cat is removed and this is on my 2nd o2 sensor on my 96 Tacoma. It appears to have tricked the system, time will tell but so far I’m impressed!

C
Cass Rama

It was nice and easy to install. And it works well.

123
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA
Trusted by Tens of Thousands of Drivers
Fix P0420 / P0430 – Clear Your CEL Today!
No Tuning • No Expensive Repairs
Fast Shipping from the USA

0 Minutes

Quick & Easy Installation

Easy bolt-on installation—get back on the road fast.

0 % Success

Trusted by Thousands

Proven to clear P0420/P0430 codes and stop CELs for tens of thousands.

0 +$

Save Big on Repairs

Avoid expensive catalytic converter replacements with our spacer.

SEE O2 SENSOR SPACER IN ACTION

Trusted by over 10,000 U.S. customers us

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How does the O2 sensor spacer work?

Our O2 sensor spacer is designed with a built-in mini catalytic converter that slightly shifts the downstream oxygen sensor away from direct exhaust gas flow. This spacer modifies the sensor’s readings by simulating catalytic activity, fooling the vehicle’s ECU into detecting normal catalytic converter function. As a result, it helps prevent false P0420 and P0430 trouble codes and keeps the Check Engine Light (CEL) off — without requiring ECU tuning or expensive catalytic converter replacement.

The mini catalytic converter inside the spacer facilitates partial oxidation of exhaust gases near the sensor, producing cleaner emissions readings and maintaining the proper air-fuel mixture balance recognized by the ECU.

Where should I install the O2 sensor spacer?

Will this spacer fit my vehicle?

Do I need to reset or clear the ECU after installation?

Why buy from an authorized official seller?

Where should I install the O2 sensor spacer?

How do I install the O2 sensor spacer?

How long does shipping take?