Subaru Catalytic Converter Replacement with Basic Hand Tools

Subaru Catalytic Converter Replacement with Basic Hand Tools

Catalytic converter replacement on a 2011 Subaru Outback with the 2.5l boxer engine. This Subaru had trouble code P0420. We tested the converter is a separate video (I’ll have a link for my Subaru Repair Playlist below) and after 174k miles this converter was toast. The front air fuel sensor and rear oxygen sensor was also replaced. It’s a good idea to replace these sensors as the old ones can be quite contaminated. Cheers.

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(A) Subaru Repair Playlist:
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(D) Touch Screen car radio install:

Tools Used:
Safety Glasses –
Breaker Bar –
1/2 Drive Ratchet and sockets –



Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Carsntoys is a member of the Amazon Influencer Program.

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Robincpke Lionsing says:

Sir, Can you tell me where to buy the parts for this Catalytic converter? Mine is Subaru Impreza 1.5R AWD. Thanks

Jonathan Nunez says:

Was it bank 1 or bank 2 ?

Big Motor says:

I was wondering if the aftermarket converter you used would give problems. I thought the use of a Cali spec converter was smart.

KW says:

I've ordered the same for my Subaru Impreza 2010 on Amazon. It should be arriving 12.01.21. But DNA Motoring. Do you know something about this company?

Bradd Pitt says:

I will be doing this job soon. I am a little worried about removing head bolts/nuts. If my car had the head gasket replaced 10k miles ago, my mechanic would have most likely removed these bolts/nuts right? So they shouldn’t be too difficult to break free?

Jaden Hanson says:

Will this work on a 2014 outback?

Robert Mariano says:

Great video. Can you share what brand and where did you buy it?

Edward Dowllar says:

Thanks for making a great video. Everything was well lit, easy to see and I appreciate the tips. My replacement cat should be coming in today.

Brian Farnell says:

what brand of replacement part did you use for the cat? Nice video.

Sam Brinson says:

What range of vehicles follow this process? Asking as a 2008 Impreza owner..

Glenn Francis says:

Another great video as always! I have always JB welded my heat shields back together when they start to rattle. It works great. I was never aware that you could run without them.

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