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ZZP LTG Malibu/Regal O2 Housing

Exhaust - ZZP LTG Malibu/Regal O2 Housing
Exhaust - ZZP LTG Malibu/Regal O2 Housing
Exhaust - ZZP LTG Malibu/Regal O2 Housing

This o2 housing bolts directly to the turbo's outlet and then bolts to the factory downpipe.  It is 3" in diameter, an o2 bung for your factory o2 sensor, and 100% stainless steel.  The outlet flange is tapped just like the factory o2 housing for ease of install, you will not have to deal with trying to hold the bolt when tightening the nut in the tight engine bay. 

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 We will provide prepaid shipping labels for domestic (U.S.) shipments. 

This O2 housing includes our 400 cell high flow catalytic converter. We no longer sell catless products. 

Includes: 3 M8x30mm bolts along with an O2 gasket.

NOTE: Make sure to select the proper model for your vehicle. The '13-15 Malibu & '13-17 Regal have a 3 bolt and the '16+ Malibu has a 2 bolt exit flange. Does not fit '18 and up Regals as they switched to a 2 bolt exit flange. 

 Fits 2.0 engine ONLY (will not fit 1.5L engine). 

This does not fit rear wheel drive LTG ATS, CTS, or Camaro, but this one does RWD LTG Downpipe.

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 if you have any questions.

Exhaust - ZZP LTG Malibu/Regal O2 Housing
Exhaust - ZZP LTG Malibu/Regal O2 Housing
Exhaust - ZZP LTG Malibu/Regal O2 Housing
Customer Reviews
4.9 Based on 12 Reviews
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Tim L.
United States United States
O2 Downpipe

Bolts Right up. Another A1 product from Michigan's finest

John W.
United States United States
Regal o2 housing

Very happy with the down pipe! Night and day difference from factory, especially on low end! I can also hear my turbo more, which I like!

David P.
United States United States

Preordered during the black friday sale and I must say, the quality of this downpipe is great. The only complaint that I have is that the o2 extenders didn't come with the crush washers and I wish it came with both gaskets. Verified to fit fwd 2018 buick regal sportback 2.0t LTG

United States United States
Regal TourX

Ordered the high flow catted 16+ Malibu O2 housing. It was a perfect fit for my 19 TourX! What a difference at take off. The turbo spools noticeably quicker = Quicker take off at partial throttle. No check engine lights, but the stock heat shield will not be reusable. The cat sits next to the stock plastic charge pipe. So I made a bracket to mount the stock heat shield. You may not get much more horsepower or a quicker WOT acceleration, but everyday driving is definitely quicker.

United States United States
Well worth it

easy install.....wish I would have known it threw a code right away.....but nothing an o2 spacer couldn't fix!