Exhaust Manifold with Catalytic Converter Assembly - 1AEEM00789

Warranty & Shipping
Product Reviews
Vehicle Fit

This new direct fit, aftermarket exhaust manifold with catalytic converter is a great replacement. It is made of the highest grade materials for long lasting durability.


  • Brand New Exhaust Manifold Catalytic Converter Assembly
  • Replaces dealer part numbers: 12564557, 12618544, 12618546
  • Direct fit replacement
  • U.S. EPA & Ministry of Environment (Canada) Certified
  • Built to strict quality control standards

Emissions Note:

Due to state emissions regulations, we cannot ship this item to the state of California as it is not C.A.R.B ( California Air Research Board) approved for use in this state.

Due to New York state emissions regulations, this item cannot be installed on a California emissions equipped vehicle in the state of New York.

All emissions information for a vehicle can be found on a tag under the hood. If the tag is missing, you can contact a dealership with your VIN to determine which emissions system your vehicle is equipped with.

Item Condition: New

5 Year Warranty

This item is backed by a 5 Year Warranty. In the event this item should fail during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. 

4.75/ 5.0
12 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Perfect fit!
Amazingly simple install, works perfectly. Couldnt ask for better prices either!
August 21, 2016
I cant believe how fast it arrived. Got it installed and it has been working great for about 3 weeks. The only thing that had me worried was the packaging it was just placed in a box too big, nothing to protect it and could have have been damaged but it wasnt thankfully. I would definitely buy again from this company.
March 1, 2017
Assembly was exact and included all components necessary for an easy swap.
July 5, 2017
Came in a Reasonable amount of time and mechanic put it on! The price was unbeatable and for a hard working person whos job is driving her car 100 to more than 200 or more miles a day, it meant a lot! Thanks!
August 3, 2017
Great replacement converter
Fit well, looked good inside, works great! The car is back to running like new again!
August 8, 2017
Fastest and the best
It come so fast!! It was exactly what I needed for my car and was the cheapest I found. This is my number one come to place for car parts for all four of my cars!!! Thank you so much!!
August 9, 2017
Saved a ton of money!
The part was significantly less than the NAPA part the repair shop was going to order. I got this part for $249 with no tax or shipping and it arrived in 2 business days, ordered Thursday, arrived Monday! Took it to the shop and they installed it in no time and my daughter was back on the road. I will be ordering the next parts I need from 1A as well.
August 12, 2017
Great product and a great price.
Fit and finish is as good as I could hope for. Bolted right up and works like it should. Very pleased with this converter.
August 14, 2017
Functional at a good price
The manifold had weld splatter imbedded in the ceramic honeycomb inside the cataletic converter. Enough metal spatter that it undoubtedly will reduce the air flow efficiency and perhaps the life of the part. The mounting flange on the exhaust end of the calatetic converter was warped to the point the bolt holes didnt line up with the holes on the mating flange of the exhaust pipe. Because of this it took nearly twice as long to work around the problem as it should have to install it. In the end, I would say that this manifold/cat assembly is functional at a good price but is not a quality part. Given the time investment required to make it work, it may not even be the best value.
August 19, 2017
Will buy again
This was also a perfect match for my vehicle I paid the shop for labor and it was done in 1.5 hour. No problems any more.
September 12, 2017
Excellent customer service; patient representatives
My teen-aged daughters car was in dire need of an exhaust system. I located 1A Auto online and contacted them to inquire about the part they advertised. The representative was very kind, answered all of my questions, and even took the time to double check the VIN number to make certain that I was ordering the correct part. Once ordered, the exhaust system arrived precisely when promised. I would recommend 1A Auto without hesitation.
July 25, 2018
Right part first time
I got my part didnt take long to get it was the right part I like 1A Auto they have videos on most things you need to repair on YouTube helps a lot
November 12, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Does this Catalytic converter manifold come with replacement gaskets?
Kaleb C October 21, 2015
Yes it does
Benjamin M October 21, 2015
Yes, the catalytic converter assy does come with gaskets and hardware. when it arrived the box was damaged, but all contents were inside and no issues with the converter.
William Y October 21, 2015
Sorry for the delayed response...yes comes with gaskets as between the unit and manifold and one after the converter. Also, heres more info: I paid a licensed mechanic to install this part for me, as I was too busy at the time and it would have taken way too much time for me to accomplish at my home garage. He did this as a side job for a really low fair price. With that said...the part was a great problems installing and no problems with the unit so far. Dealer and 2 other places wanted approx $1000 to do this (parts & labor). I would Definitely Buy Again!! I hope this helps!!
David U October 28, 2015
Is this converter just as good as OEM?
Kevin N February 12, 2016
After 10 months, still performs great.
Jordan O February 12, 2016
I have had this catalyc converter on my car for a year with absolutely no issue. It works great. I also replaced the exhaust side O2 sensor. This could be as DIY project, but I had a garage install it. It took about an hour.
Jeffrey W February 13, 2016
This converter was as good as, if not better than, factory. It was built out of cast iron and all the welds were perfect. I replaced an aftermarket assembly with this assembly and it weighed about 3 times what the other one did. It was well built and fit perfectly. Flawless, I changed it in less than an hour and have had no issues.
Jeremy M February 13, 2016
i bought on e a year ago and all is good ,works just fine
Steve S February 15, 2016
Hello, Yes the quality is great. This carries a 5 year warranty also.
Brian F February 16, 2016
The part I recieved was not what I consider to be OEM quality. There was weld spatter imbedded in the honeycomb of the cataletic converter. The mounting flange on that same end was warped to the point the bolt holes didnt line up with the holes in the mating flange.
Shawn E August 19, 2017
Yes it is.perfect match
Fernando R September 12, 2017
Yes it is. Is identical
Fernando R November 27, 2017
I have not had a problem yet with mine.
Fernando R July 12, 2018
Does it come with the oxygen sensor?
C P March 31, 2016
No it does not you have to use the one off your old exhaust manifold. Or if you need to replace it for a news one
Joe G April 1, 2016
Miguel V April 1, 2016
No it does not. The O2 sensors are upstream and downstream of the converter.
Christopher C April 1, 2016
Jordan O April 1, 2016
No, reuse OE or replace. Its recommended to install a new one with the new cat.
Brian F April 1, 2016
Im sorry, no, it does not. Buy new ones, it will be better for your engine anyway. I didnt reuse my old ones, they are hard to get out most of the time anyway.
Jeremy M April 2, 2016
No, you have to buy it separate. I have mine on the way, lol
A L August 10, 2017
Does this get put on with bolts or welding ??
Eli E October 21, 2016
4 bolts
Jordan O October 21, 2016
Good evening. And that is a bolt on installation. The harder part is getting the old bolts out. Be sure to spray them with a lubricant like WD40 then unbolt the old one and the new one will install easy. Hope this helped you
Justin H October 21, 2016
I had mine installed by a mechanic, but as I recall, it bolts on.
Jeffrey W October 21, 2016
bolt on
Brian F October 24, 2016
It bolts on. Installation is fairly straight forward and can be done with simple hand tools.
Shawn E August 19, 2017
It is put on with bolts. About 7 pcs.
Fernando R November 27, 2017
It is put on with the existing bolts. No welding required.
Fernando R July 12, 2018
Does it have the hole for the o2 sencer to screw into? I didn’t see it in the picture.
Terry R February 23, 2018
Yes, there will be O2 ports in the same place as the factory part. Thank you!
Adam G March 6, 2018
Yes it does
Jeremy A March 6, 2018
Yes it does
ROGER M March 6, 2018
Year Make Model Description
2004-2008Chevy Malibu Chevy Malibu Exhaust Manifold with Catalytic Converter Assembly L4 2.2L
2008Chevy Malibu Chevy Malibu New Body Style Exhaust Manifold with Catalytic Converter Assembly L4 2.4L with 4 Speed Automatic Transmission (excluding Partial Zero Emissions Vehicle (PZEV))
2006-2007Pontiac G6 Pontiac G6 Exhaust Manifold with Catalytic Converter Assembly L4 2.4L
2008Pontiac G6 Pontiac G6 Exhaust Manifold with Catalytic Converter Assembly L4 2.4L with 4 Speed Automatic Transmission (excluding Partial Zero Emissions Vehicle (PZEV))
2008Saturn Aura Saturn Aura Exhaust Manifold with Catalytic Converter Assembly L4 2.4L with 4 Speed Automatic Transmission (excluding Partial Zero Emissions Vehicle (PZEV))
Part #: 1AEEM00789

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout