How does It work?
This O2 Sensor Spacer works on competitive racing vehicles by moving the post-cat oxygen sensor out of the direct exhaust flow. It effectively reduces the amount of exhaust gas exposed to the oxygen sensors tip to that of a normal production street vehicle. This O2 Sensor Spacer usually clears the p0420 and p0430 check engine light codes (cel) 95.9% of the time., if the p0420 or p0430 cel is illuminated the engine control unit (ECU) will put the vehicle into “limp mode” (safe mode) resulting in poor performance and gas mileage, not to mention it’s pretty annoying seeing that check engine light on all the time.
O2 Sensor Spacers are only installed on the post cat (rear) oxygen sensors usually located at or slightly past the catalytic converter. Vehicles have either one or two post-cat oxygen sensors and an o2 simulator should be installed on each post-cat sensor to remove p0420 and p0430 and check engine light codes for a bad or missing catalytic converter.
FITMENT, will it fit my vehicle?
This O2 Sensor Spacer is threaded 18mm x 1.5 which is the size of 99% of vehicles produced. Check your owner’s manual, and performance data or just crawl up under there, locate the post-cat sensor and put a 7/8 inch or 22mm wrench on the hex portion of the oxygen sensor if the wrench fits then you have 18mm x 1.5 threads. Correct fitment is your responsibility, please take the time to check.
Clearance, how much room is needed for installation?
The only issue for clearance is the length of the O2 Sensor Spacer and Oxygen Sensor combined as measured from the exhaust pipe to the oxygen sensors wire tip. This length is 4.5 inches (115mm) so imagine your presently installed oxygen sensor is 2 inches longer than it is, that’s how much clearance you need to install this type of O2 Sensor Spacer. It is your responsibility to ensure there are no clearance issues.
How is the O2 Sensor Spacer Installed?
The O2 Sensor Spacer simply screws into your existing exhaust pipe using the same thread port where your post-cat sensor is located. Installation is easy, first, disconnect the oxygen sensor and unscrew it. Second, screw back in the O2 Sensor Spacer, then screw in the oxygen sensor, reconnect the oxygen sensor, and that’s it your done.
Please Note:
(1) This Does Not Fix A Defective O2 Sensor, Wiring or Heater Circuits.
(2) No…O2 Sensor Is Included In This Offer.
(3) Designed For Post Cat Sensor ONLY.
(4) Intended For Competitive Modified Exhaust Use Only.
(5) Do Not Use To Remove Cel Caused By Faulty Catalytic Converter!
(6) It is the buyer’s responsibility to check and verify Fitment and Clearance issues.
Inexpensive O2 sensor plug
Strong, well built, very good quality
Con – Does not come with copper gasket for better sealing.
Used in my after market Y pipe of my 2002 Camaro. Fit very well. I installed with my own washer to improve seal.
John Spiesson December 13, 2017
perfect for eliminating O2 holes in dual exhaust.
fit perfectly into the O2 bungs in my BBK cats
Salvador Godinezon June 29, 2018
Good quality.
Exactly what I needed
frank jahneron December 5, 2018
O2 sensor plug
Love it! And the item fit perfectly in my aftermarket headers. And when it says 2 day shipping… they mean it! I mean shipping was faster than the flash! Thanks again and God bless
Jay Juniouson March 31, 2019
Fit good good seller
They fit the pipes I bought 06 XL883R no o2 sensor carbed bike
Randy Barneson March 31, 2019
Worked perfectly
Good material
Salmuel Carteron April 30, 2019
Perfect threads and finish
Perfect fitment and given its a specialty size price was reasonable.
Adis Abeba Orozco Sandovalon June 1, 2019
Does the job
The allen key hole has a “spring” inside to help keep the plug on the key. I was able to install the plug with an outstretched arm laying on the ground without even jacking my car up at all. EXCELLENT!
miguel alarconon June 11, 2019
Large Allen key required …
10mm Allen head I believe which I didnt have but used vice grips on the lip edge to tighten
Jacob De La Torreon July 30, 2019
Good pricing, and quick shipment
Oxygen sensor for Air Compressor. Needed on, found it, of course…works perfect, and was exactly what I wanted, at a price I could live with. Found it on another website, price was good, but they wanted $8.95 to ship it! Stupid! ALWAYS look Prime first…you will find what you need.
Dung Nguyenon August 22, 2019
It plugs.
Yup. It works
isaac ulloaon December 14, 2019
Fast, affordable, and correct
Cant get anymire simple than this
Bernie Alfonso Giron Garcia/GTLon December 21, 2019
It fit and the recessed allen leave a low profile for tight tolerance areas.
It fit well.
Jorge Gonzalezon January 22, 2020
Good plug
Did exactly as I wanted.
yobani jaquezon February 21, 2020
Best price and fastest delivery..
Motorcycle
kevin pearlon March 9, 2020
Perfect Fit
Fit perfectly on my girlfriends 19 Ninja 400 with a full two brothers exhaust.
belal atiyanion July 3, 2020
Great
Good stuff, simple and effective. Bought a used Cobb catted downpipe and needed this to plug the wideband sensor hole.
JAVIER GUERREROon March 25, 2021
Anonymouson March 13, 2023