Universal 90 Degree O2 Spacers with Catalytic Converters - Pair

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Universal O2 spacers with real precious metal Catalytic Converters lengthen the distance between the O2 spacer(s). We've taken our spacers a step further by having built-in catalytic converters to allow the ECU to properly read exhaust gas and perform at optimal performance. 

Oxygen sensors can occasionally trigger a CEL on stock vehicles due to the new advances of technology and would require an O2 spacer to bring the vehicle back to equilibrium and allow the ECU to read exhaust gases within the proper threshold. 


  • Fits most makes & models worldwide (Specify Angle option from drop down above and Quantity needed for your specific vehicle)

  • Spacer available in a 90 Degree

  • Male end threads into existing M18 x 1.5 O2 Bungs

  • Spacer body dimensions: 3 3/4" L x 1 1/2" W x 1 1/2" H

  • Fitting dimensions: 1" L x 1" W x 1" H (not including threaded portion)

  • 1" depth of threads on fittings for adjustments

Read about MotoIQ's 987.2 Cayman S track build that used these O2 Spacers


  • For use on DOWNSTREAM oxygen sensors only

  • Universal fitment for all cars

  • For off road competition use only, not to be use on public roads or highways. Please check with your local authorities to ensure compliance with all laws. 

  • There is no guarantee this will prevent a CEL from triggering, please contact a Fabspeed Performance Specialsist for more details.

4 Reviews

  • 5
    O2 Spacers

    Posted by David Street on 2nd Oct 2020

    I was running a different brand of spacer before and still receiving emissions codes. I just installed these and hope they work better. These are very high quality parts, well made with nice welds and quality steel. They are fitted on my 2016 Nissan GT-R. These parts are much larger than they look in the pictures but they fit. My GT-R tech said the install was moderately difficult do to space constraints inside the car, he used a special extension tool they have in the shop to tighten the bolts from above the engine bay.

  • 5
    O2 Spacers with Mini Cats

    Posted by Jack L. on 30th Apr 2020

    The product is of high quality and does the job. Outstanding customer service.

  • 5
    O2 spacers

    Posted by Robert on 26th Apr 2020

    Worked perfectly on my 2001 Porsche Boxster.

  • 5

    Posted by Alex on 15th Jan 2020

    Hi, i have mclaren 570s ...i wanna install spacers O2 because turn on light check engine, but i need install only 2 spacers or 4 spacers?? Answer from the Fabspeed Team: Hi Alex, yes you will only need to install 2 spacers, not 4. Hope this helps!