Honda Civic Exhaust Manifold with Catalytic Converter Assembly - 1AEEM00612

Warranty & Shipping
Product Reviews
Vehicle Fit


  • 1 piece stainless steel manifold with new catalytic converter (not reconditioned)
  • 2 bolt lower exhaust flange
  • Includes manifold gasket as shown
  • Catalytic converter has provisions for front & rear Oxygen (O2) sensors
  • Direct replacement
  • Replaces original manifolds that are cracked from thermal expansion and contraction
  • Strengthened and redesigned in the vulnerable areas of failure

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. 

4.83/ 5.0
6 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great replacement part for 02 Civic LX
The fitment of the exhaust manifold is exact and precise. The gaskets and included spring bolts also worked perfectly. The only downside is that the heat shield uses nuts and bolts to the pieces to the manifold. The top shield has to be removed in order to install the center nut properly. Getting the tiny nuts back on the bolts behind the shield is a bit tricky, but can be done by reaching around the back side of the manifold. Everything fits and works perfectly and passed my safety re-inspection.
March 29, 2017
Great Replacement
Fast and easy purchasing process. Looked and felt like a quality part. Having to install the heat shield was a pain in the butt because it wasnt easy to access the back side to attach the nut on my 2003 LX. Installing the other end of the exhaust was tough but that was because of having and old car that doesnt give as much to attach the springs and bolts. Other than that, this was a great product. I would recommend it.
June 20, 2017
Excellent delivery time and part was just as advertised.. I will recommend this highly to others..
July 12, 2017
Fits and works well
It bolted right on my 02 LX Civic, the heat shield bolts are a pain to install but everything else went on very easy.
August 13, 2017
Perfect Fit
Fast shipping! Bought this kit to replace the cracked exhaust manifold on my mom’s 2004 civic. Everything went on and fit perfectly. All bolt holes lined up and with the added new hardware for the exhaust pipe flange, the reconnect was so much easier than the disconnect. Plus, with the added how to video on the website, I knew just what to do and expect. Great job 1AAuto!
December 11, 2017
Works great
It definitely quieted the sound inside the car. Doesnt feel like the car is going to vibrate apart any more. However the installation was a bit difficult due to the heat shield mounting screws. You have to remove it to attach it to the engine but you cant get behind the drivers side to place the nut and screw the bolt through. Nut needs to be welded to catalytic converter so you dont have to reach behind it. Other than that it works great.
January 22, 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
Will this part fit a 2005 Honda Civic HX model? It has a D17A6 engine.
Kelly N August 13, 2015
Yes I think it will ,,,, I purchased for my 2002 civic last year no problems Great price Great product
Bradley K August 25, 2015
Not sure. It did fit my 2003 1.7 non vetch motor.
James D August 26, 2015
Does this also include heat shield?
Brian T January 27, 2016
Yes complete unit installed my over 1 1/2 years ago very happy with purchase no issues at all
Bradley K January 27, 2016
Christopher H January 27, 2016
Hello, Yes the item shipped is as shown on the website.
Brian F January 27, 2016
yeah it is all-inclusive kit. Ive changed the same on my wifes 02 Civic without any problems. Take your time and its straightforward.
Dan P January 27, 2016
Yes it includes heat shield, gasket, and bolts
Ben T January 27, 2016
Jeff B December 11, 2017
Is this approved in ca?
Dave D April 14, 2016
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.
Derek C April 14, 2016
Doesnt this fit in a lx model?
Joe H July 21, 2016
(excluding EX Models)
Brian F July 21, 2016
Yes it does.
Eric S July 21, 2016
Yes. Its for the 1.7L engine, LX and DX Models
Ben T July 21, 2016
Yes. My son has a 2001 Civic LX and it worked just fine.
Eric M July 22, 2016
Jeff B December 11, 2017
Does it fit in a VTEC engine?
Jonathan Z January 13, 2017
Yes, if your vehicle is within the year range 2001 - 2005 with the 1.7L and is not an EX model this will be a bolt on replacement for your V-Tec engine.
Alex P January 13, 2017
Where can I find one for the ex model, all of the say excludes ex trim, I have a 2002 civic ex?
Toby G January 28, 2017
Hello Toby. It appears that we do have the front converter for your EX model, but it is currently out of stock. The part number is 1ACCD00320 if you would like to take a look on our website!
Tim K January 29, 2017
I live in Massachusetts and not concerned with the laws in California. My question is... will this replacement part make my CEL come on?
D T March 1, 2017
Catalytic converters are internally designed separately on some vehicles between California Emissions and Federal Emissions. If your vehicle is equipped with California Emissions, and you purchase one for a Federal Emissions part the CEL may come on.
Alex P March 2, 2017
Are the products new or used?
Briana B July 30, 2017
Yes, the products are new. My order was exactly what I needed.
Bradford E July 30, 2017
Yes they are and have been in the car for over a year now
Doug B July 31, 2017
New. Everything was new, complete... installed in about 1 hour. Be careful removing the old bolts, dont strip them.
Nathan H July 31, 2017
These are brand new.
Alex P July 31, 2017
The product was new and fit perfectly.
Gregory M August 1, 2017
Will this part fits Honda Civic 2002 DX 4D MT?
Moazzam H August 24, 2017
Yes, as long as your Civic has the 1.7L engine.
Alex P August 25, 2017
Year Make Model Description
2001-2005Honda Civic Honda Civic GX L4 1.7L Exhaust Manifold with Catalytic Converter Assembly
2001-2005Honda Civic Honda Civic LX L4 1.7L Exhaust Manifold with Catalytic Converter Assembly
2001-2005Honda Civic Honda Civic DX L4 1.7L Exhaust Manifold with Catalytic Converter Assembly
2001-2005Honda Civic Honda Civic HX L4 1.7L Exhaust Manifold with Catalytic Converter Assembly
2004-2005Honda Civic Honda Civic Value Package L4 1.7L Exhaust Manifold with Catalytic Converter Assembly
Part #: 1AEEM00612

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