Exhaust Manifold with Catalytic Converter Assembly - 1AEEM00789

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.

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. Please keep your invoice for proof of this warranty.

4.7 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Perfect fit!
Amazingly simple install, works perfectly. Couldn't ask for better prices either!
August 21, 2016
Assembly was exact and included all components necessary for an easy swap.
July 5, 2017
8 months ago
I can't 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 wasn't thankfully. I would definitely buy again from this company.
March 1, 2017
1 year ago
Came in a Reasonable amount of time and mechanic put it on! The price was unbeatable and for a hard working person who's job is driving her car 100 to more than 200 or more miles a day, it meant a lot! Thanks!
August 3, 2017
7 months ago
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
6 months ago
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
7 months ago
Great replacement converter
Fit well, looked good inside, works great! The car is back to running like new again!
August 8, 2017
6 months ago
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
6 months ago
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
7 months ago
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 didn't 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
6 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 4 questions Browse 4 questions and 24 answers
Is this converter just as good as OEM?
kevin n on Feb 12, 2016
BEST ANSWER: 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.
Does it come with the oxygen sensor?
C P on Mar 31, 2016
BEST ANSWER: I'm sorry, no, it does not. Buy new ones, it will be better for your engine anyway. I didn't reuse my old ones, they are hard to get out most of the time anyway.
Does this get put on with bolts or welding ??
Eli E on Oct 20, 2016
BEST ANSWER: I had mine installed by a mechanic, but as I recall, it bolts on.
Does this Catalytic converter manifold come with replacement gaskets?
Kaleb C on Oct 21, 2015
BEST ANSWER: Sorry for the delayed response...yes comes with gaskets as between the unit and manifold and one after the converter. Also, here's 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!!

Vehicle Fit

  • 2004-2008 Chevy Malibu Exhaust Manifold with Catalytic Converter Assembly L4 2.2L
  • 2008 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)
  • 2006-2007 Pontiac G6 Exhaust Manifold with Catalytic Converter Assembly L4 2.4L
  • 2008 Pontiac G6 Exhaust Manifold with Catalytic Converter Assembly L4 2.4L with 4 Speed Automatic Transmission excluding Partial Zero Emissions Vehicle (PZEV)
  • 2008 Saturn Aura Exhaust Manifold with Catalytic Converter Assembly L4 2.4L with 4 Speed Automatic Transmission excluding Partial Zero Emissions Vehicle (PZEV)
Part #: 1AEEM00789

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