LHU Regal o2 Housing/Downpipe Package

Exhaust - LHU Regal O2 Housing/Downpipe Package
Exhaust - LHU Regal O2 Housing/Downpipe Package
Exhaust - LHU Regal O2 Housing/Downpipe Package

LHU Regal o2 Housing/Downpipe Package

33 reviews
Regular price $399.99
  • In stock, ready to ship
  • Inventory on the way

This will replace your factory o2 housing and downpipe with our high flow ZZPerformance package. It is made of stainless steel so it will outlast the car. The ZZP unit is two pieces just like the factory parts and they are joined by a 3" VBand clamp assembly. This package will bolt up to the stock turbo and cat back exhaust with no modifications needed.

The gains are hard to measure because the Regal adjusts its boost by the amount of airflow the MAF sensor is seeing. So as you add mods the car sees the added airflow and reduces your boost to bring the power back down. So we included a dyno sheet to show the gains. Our o2 Housing/Downpipe package, ZZP tune, and ZZP high flow intake tube bring the average HP and torque gains of 70 whp and 70 ft lbs of torque across the entire pull which is huge power gains! The peak gains of this package were 89 whp and 77 ft lbs over stock!

Please make sure to select the correct model because the GS has different hanger locations and a larger outlet flange.

Please note: the factory o2 housing uses a ring style gasket. that is left out when installing this product. you can use a small amount of red high heat RTV at the turbo to o2 housing connection.

Fits 2011-2013 Regal 2.0T

Our downpipes come with a high flow catalytic converter that is 48 state legal. Our catalytic converters will not pass California or New York state emissions. Please contact customerservice@zzperformance.com if you have any questions.

We are currently offering $100 in store credit to purchase your stock catalytic converter back from you. If you're interested, take a photo of your stock downpipe and email it to Henry@zzperformance.com. We will provide prepaid shipping labels for domestic (U.S.) shipments.

Customer Reviews
4.8 Based on 33 Reviews
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  • O2 sensor
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Kelly M.
United States

Love the sound. It did not come with a gasket. Was told by customer service to use high temp liquid gasket that did not hold. Sounded great up until liquid gasket let go. Have a performance shop fixing it but excited to get it back. Car never sounded better.

Nick M.
United States United States

5 stars 2 thumbs up Good product will use again

Exactly what the picture showed it fits my 2012 Buick Regal GS perfectly no modifications needed. It also changed the tone of the car for the better I will definitely use ZZ performance again

Shawn W.
United States United States

Good craftsmanship

Fit was great. Pro tip would be connect v band before installing mid pipe hanger. That will help with bending the flex around. Sets p0420 code as expected but nothing hp tuners can't help with.

Serafin P.
United States United States

LHU Regal o2 Housing/Downpipe

Awesome product!!! A must buy Pro easy to install, the build quality is top notch, you can fell the right off the bat performance, looks grate to bad it under the car where you can not see it and improved exhaust note. Before I bought this product I read in the reviews there was two thing that I had concern about. 1 you will get a check engine light. I did get a check engine light for hight flow on the o2 sensor only when I went wide open throttle. 2 the bracket would not fit. Everything fit just fine but this one bracket that you will not be able to use and that bracket look like something that not really needed because the stock muffler hanger work and fit just fine and easy to install.

ZZPerformance LHU Regal o2 Housing/Downpipe Package ReviewZZPerformance LHU Regal o2 Housing/Downpipe Package ReviewZZPerformance LHU Regal o2 Housing/Downpipe Package ReviewZZPerformance LHU Regal o2 Housing/Downpipe Package ReviewZZPerformance LHU Regal o2 Housing/Downpipe Package Review
Roberto P.
United States United States

Great product

Works good great sound make sure to get a good gasket for turbo part of installation instead of red rtv gasket sealant

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