- Includes heat-shield for protection of hoses, wiring, and other engine components
- Cast iron or stainless tubular construction protects against warping and/or cracking
- Leak-resistant for long-lasting performance
- A rigorous quality inspection has been undertaken to ensure that this part conforms to product standards
- A quality part backed by a Dorman limited lifetime warranty
Product Features |
Frequently Bought Together
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Product Details
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Product Specifications
Product Information
BrandDorman
Manufacturer Part Number674439
Sizing and Specifications
Item Weight15 Pounds
Height7.38 inches
Length19.88 inches
Width12.88 inches
Product Description
More like a complete kit than a single part, many of our Exhaust Manifolds include gaskets and hardware for a complete installation. Since this part is a direct replacement, the exact fit adds another layer of efficiency and convenience.
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Customer Reviews
Most Helpful Customer Reviews
6 of 6 people found the following review helpful
Amazon Verified Purchase
I spent a good month fretting over installing my Dorman Exhaust Manifold. I learned in 2008 after a repair job from Honda that I had a cracked manifold. They quoted about 900+ dollars to fix. I refused and went on my way. Well fast forward to summer 2009 and I noticed the "hissing" sound under the hood was becoming very annoying. Took off the heat shield to look and sure enough, a good 2 inch crack down the manifold. Determined to save money, I read that Dorman produces great replacement parts.
So I ordered one. Upon receiving the part, I noticed it had everything I needed and some extras that I wasn't certain I would use. So it sat, and sat, and sat....
Determined that after a good month, it was time to install it, especially after the first couple cool days. I could smell exhaust in the cabin.
This morning I went out, purchased some PB Blaster spray (similar to Liquid Wrench) and sprayed down the rusty nuts and bolts.
Everything came off with minimal effort. The most difficult part of the removal was the oxygen sensor plastic plug connectors. I spent 30 minutes trying to get those apart.
On reinstall, have some good ratchet extensions, wrenches, and a torque wrench (maybe even one of those fancy sockets that are slotted for oxygen sensor removal).
Took me a couple hours to reinstall. Start at the bottom and leave everything "loose" and work your way up to the manifold. Once everything is aligned and in place, start to tighten to manufacturer torque specs. Everything fit great.
Thumbs up to this product. I'm no mechanic, but I know enough about cars to know my limitations. This is definitely a part I was able to handle relatively well!
So I ordered one. Upon receiving the part, I noticed it had everything I needed and some extras that I wasn't certain I would use. So it sat, and sat, and sat....
Determined that after a good month, it was time to install it, especially after the first couple cool days. I could smell exhaust in the cabin.
This morning I went out, purchased some PB Blaster spray (similar to Liquid Wrench) and sprayed down the rusty nuts and bolts.
Everything came off with minimal effort. The most difficult part of the removal was the oxygen sensor plastic plug connectors. I spent 30 minutes trying to get those apart.
On reinstall, have some good ratchet extensions, wrenches, and a torque wrench (maybe even one of those fancy sockets that are slotted for oxygen sensor removal).
Took me a couple hours to reinstall. Start at the bottom and leave everything "loose" and work your way up to the manifold. Once everything is aligned and in place, start to tighten to manufacturer torque specs. Everything fit great.
Thumbs up to this product. I'm no mechanic, but I know enough about cars to know my limitations. This is definitely a part I was able to handle relatively well!
3 of 3 people found the following review helpful
Amazon Verified Purchase
I brought my 99 civic in to Honda for an Oil Change and was told my manifold and cat had to be replaced at the cost of 1,300 for a crack in the manifold. I did take the heatshield offf and saw a huge crack by the oxygen sensor. Apparantly this is a common thing with the civic after many years. I bought this Dorman replacement and was wondering if I could do this myself. I really do not have much experience in auto mechanics other than minor tune up and brakes. I decided to take on the challenge (well if that is what you want to call it) I had the old one out and the new one in in about 40 minutes. Works like a charm, no difference in sound or anything and now no smell of exhaust in my car from the crack. I can't believe how much money I saved. Well worth it and I am glad I got it. I did have a rattle sound after driving the car and turns out it was the heat shield on the front pipe which I fixed. Before I knew that I called Dorman and spoke to the tech and he was great. I am very pleased. Just use a lot of blaster spray for the rusted bolts and you will be fine.
3 of 3 people found the following review helpful
Amazon Verified Purchase
This is my second Dorman manifold. I put the first one in a 1997 Honda Civic LX and the Second in a 1999 Honda Civic LX. The instructions are very general and are made for all of the different combinations of exhaust manifolds and catalytic converters. They say there are serrated flange nuts to attach the two parts but all I found in the box were normal grade 5 nuts. I purchased a few flange nuts and everything went together easily. There are also nuts and bolts included to attach a heat shield. On this catalytic converter the heat shield was pre-attached
Installation was pretty easy. The lower oxygen sensor was completely seized on both cars and had to be replaced. If you live in the rust belt expect to replace it. The Dorman is a little slimmer than the OEM version so it slides into place easily. Use a torque wrench so you don't crack the manifold. The car is much quieter now. The first installation took about 4 hours and two trips to the auto store and the second was only 2 hours with no trips. Overall, a good product and much less expensive than anything else around.
Installation was pretty easy. The lower oxygen sensor was completely seized on both cars and had to be replaced. If you live in the rust belt expect to replace it. The Dorman is a little slimmer than the OEM version so it slides into place easily. Use a torque wrench so you don't crack the manifold. The car is much quieter now. The first installation took about 4 hours and two trips to the auto store and the second was only 2 hours with no trips. Overall, a good product and much less expensive than anything else around.
Most Recent Customer Reviews
Great fit for a great price
Let me first say that I am a believer in genuine Honda parts. In this case, however, I was not sold on the Honda part. Read more
Published 4 months ago by gdeanbecker
Great replacement for OEM
At first when I got it I was a bit reserved on my opinion, but after installing it on my car I was quite happy I had made the purchase. Read more
Published 4 months ago by Kyle
Fits like a glove
No issues yet!
Instructions were easy to follow. I wold just hope that here was more QC done on theses things. Then again, that's why they're cheap!
Instructions were easy to follow. I wold just hope that here was more QC done on theses things. Then again, that's why they're cheap!
Published 5 months ago by jaipe1580
Fits a 1998 Honda Civic LX
I had this Manifold installed on my 1998 Honda Civic LX. It seems to work fine. It comes with bolts and gaskets. Read more
Published 5 months ago by Jason
works perfect so far
i have running 350 + miles so far, and the engine light has not come back. I took a chance on this product knowing there were some bad reviews, but so far i do not regret it. Read more
Published 6 months ago by Commander Mike
200 miles and done.
Bought this to replace cracked manifold. Went on easy everything fit ok. Cleared cat ineficiency code. Good for 200 miles and cat ineficiency code is back. Read more
Published 8 months ago by jawelo
Great so far
Like many others, I thought this didn't come with a gasket for between the two halves. Turns out that the gasket WAS included in the bottom of the box, kind of loose. Read more
Published 9 months ago by Bradley
Piece of Crap
I installed this in May of 2010 when I bought it to replace a cracked manifold as many of you so often do and are now in search of this part. Read more
Published 9 months ago by R. Matute
Thank goodness...
This was cheap compared to other online OE replacements for the civic's "coffee can" as honda techs call it. Read more
Published 11 months ago by Evan
OK - As Far As It Goes
I had to replace the catalytic converter on a '97 Civic because I was getting a Cat error code, and the car is coming due for inspection. Read more
Published 11 months ago by Book Carpenter
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