2001-05 Honda Civic Exhaust Manifold with Catalytic Converter Assembly - 1AEEM00612


  • 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.

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. 

4.8 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Works great
It definitely quieted the sound inside the car. Doesn't 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 can't get behind the drivers side to place the nut and screw the bolt through. Nut needs to be welded to catalytic converter so you don't have to reach behind it. Other than that it works great.
January 22, 2018
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
8 months ago
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
1 year ago
Excellent delivery time and part was just as advertised.. I will recommend this highly to others..
July 12, 2017
1 year ago
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 wasn't 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 doesn't give as much to attach the springs and bolts. Other than that, this was a great product. I would recommend it.
June 20, 2017
1 year ago
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
1 year ago
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Browse 9 questions Browse 9 questions and 23 answers
Doesn't this fit in a lx model?
Joe H on Jul 21, 2016
BEST ANSWER: Yes. My son has a 2001 Civic LX and it worked just fine.
Does this also include heat shield?
Brian T on Jan 27, 2016
BEST ANSWER: yeah it is all-inclusive kit. I've changed the same on my wife's 02 Civic without any problems. Take your time and its straightforward.
Are the products new or used?
Briana B on Jul 30, 2017
BEST ANSWER: New. Everything was new, complete... installed in about 1 hour. Be careful removing the old bolts, don't strip them.
Will this part fit a 2005 Honda Civic HX model? It has a D17A6 engine.
Kelly n on Aug 13, 2015
BEST ANSWER: Yes I think it will ,,,, I purchased for my 2002 civic last year no problems Great price Great product
Will this part fits Honda Civic 2002 DX 4D MT?
Moazzam H on Aug 24, 2017
BEST ANSWER: Yes, as long as your Civic has the 1.7L engine.
I live in Massachusetts and not concerned with the laws in California. My question is... will this replacement part make my CEL come on?
Dirty D on Mar 1, 2017
BEST ANSWER: 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.
Where can I find one for the ex model, all of the say excludes ex trim, I have a 2002 civic ex?
TobyG on Jan 28, 2017
BEST ANSWER: 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!
Does it fit in a VTEC engine?
Johnny on Jan 13, 2017
BEST ANSWER: 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.
Is this approved in ca?
Dave D on Apr 14, 2016
BEST ANSWER: 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.

Vehicle Fit

  • 2001-2005 Honda Civic Exhaust Manifold with Catalytic Converter Assembly L4 1.7L (excluding EX Models)

This part replaces:

  • Hollander 327-59214
  • OE # 18160PLMA50
  • OE # 18160PLMA00
  • Dorman 674-608
  • Hollander 327-59213
Part #: 1AEEM00612

Order must be placed by 4pm ET