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O2 Housing/Downpipe 1.4L

Exhaust - O2 Housing/Downpipe 1.4L
Exhaust - O2 Housing/Downpipe 1.4L
Exhaust - O2 Housing/Downpipe 1.4L

The factory o2 housing on the 1.4 turbo Ecotec motor has been shown to be quite restrictive. Our 2.5" Stainless steel high-flow version has been dyno proven to produce gains of up to 8 horsepower at the wheels. This is a gain of more than 6 percent! This easy bolt-on modification re-uses the factory V-band clamp where it attaches to the turbo. Comes with everything needed to install just replacement bolts and nuts. Dec 2014: It comes with 2 o2 bungs, and a plug in case you want to add a wideband o2 sensor later. 

Note: This O2 housing does not include a catalytic converter, we move the cat to our mid pipe if you have a Cruze, if you do not install our midpipe or 2nd cat section with this product it will set check engine light without ECU programming. If you have a Sonic, you will require tuning to not set a check engine light. 

For a complete street setup that does not require ECU programming, see our O2 housing/mid pipe combo. This part fits the 1.4 Chevy Sonic, Cruze, and Buick Encore.

We recommend replacing the v-band clamp while installing the O2 housing since they are a common failure point. 

Installed on Cruze sound clip


Verified fitment on 1.4L Turbo Vanderhall Venice. 

Updated 8.25.2020 to no bracket and includes flex section. 

We are currently offering $100 in store credit to purchase your stock catalytic converter back from you (only the primary cat on the 1.4, not the mid-pipe). If you're interested, take a photo of your stock downpipe and email it to We will provide prepaid shipping labels for domestic (U.S.) shipments.

Exhaust - O2 Housing/Downpipe 1.4L
Exhaust - O2 Housing/Downpipe 1.4L
Exhaust - O2 Housing/Downpipe 1.4L
Customer Reviews
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United States United States

1.4l turbo downpipe

Bolted up quick and easily and car runs better without the old catalytic converter

Zackary E.
United States United States

Love it

I love it it’s a great upgrade from the stock one with a cat. If you already have an aftermarket exhaust it’s sounds great if not you should. This was a 10 out of 10 item I will be shopping more.

E. Cass
United States United States

Great Quality

This is my first order from Zzp and the quality of the product is superb as I have read from other ppl on forums of th Zzp products. Honestly the only complaint I have is my downpipe didn't come with the ZZP logo tac welded to the side of it, so it just looks like I had a local shop fab it up. No big deal though as I know where it came from lol. Shipping was fast, orderd 8pm Christmas night and was here Thursday morning which is hella awesome. ZZP gets a hella 2 thumbs up

Isaiah R.
United States United States


This item is great quality it has amazing welds and sounds crazy I love it all I hear is my turbo great product I would definitely recommend

United States United States

Sonic project

Downpipe came fast and great quality! This completes my full ZZP exhaust. Sounds amazing too. The turbo spools much faster now.