Exhaust Manifold Kit
Hover over the image to zoom in
Exhaust Manifold Kit Exhaust Manifold Kit
Share this:

Dorman - OE Solutions Exhaust Manifold Kit

Part No. 674-439 Warranty Details  

See if this part fits a specific vehicle.

Check Vehicle Fit

Many of our Exhaust Manifolds with Integrated Catalytic Converters include gaskets and hardware for installation. Since this part is a direct replacement, the fit adds efficiency and convenience.

Product Features:
  • 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
Back To Top
Color:Unfinished
Hardware Included:Yes
Inlet Port Shape:Square
Material:Cast Iron
Gasket Or Seal Included:Yes

REVIEW SNAPSHOT®

by PowerReviews
Dorman - OE SolutionsExhaust Manifold Kit
 
2.3

(based on 12 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (5)

50%

of respondents would recommend this to a friend.

Pros

  • Easy to install (5)

Cons

No Cons

Best Uses

  • Everyday driving (6)
  • Replacement (5)
    • Reviewer Profile:
    • Casual driver (6)

Most Liked Positive Review

 

Inexpensive Replacement

My daughter ran over a parking stop and cracked her manifold December 2009. It started throwing error codes, illuminated the check engine light and was running rough. I replaced the one piece factory...Read complete review

My daughter ran over a parking stop and cracked her manifold December 2009. It started throwing error codes, illuminated the check engine light and was running rough. I replaced the one piece factory unit with this and it worked for approximately 9 months without issue. However, I suspect this is a non-California catalytic converter but all Hondas are tuned for CA emmissions. Therefore, once this converter broke in, it no longer passes the stringent CA parameters and throws codes. The easy fix is to put a couple of modified non-foulers on the lower O2 sensor, problem solved. Been good ever since I did that.

Yes, I would recommend to a friend that was aware of this fact. No, I would not recommend to a friend that doesn't do their own service and know what this requires.

VS

Most Liked Negative Review

 

Failed 6 months later...

I purchased this manifold without first reading the reviews from previous customers. My manifold lasted a couple months longer than theirs, but for the price it definitely wasn't worth it. Check engine light...Read complete review

I purchased this manifold without first reading the reviews from previous customers. My manifold lasted a couple months longer than theirs, but for the price it definitely wasn't worth it. Check engine light came on a few weeks ago, and at first I thought it was my O2 sensors that had gone bad, but after changing them for new ones I quickly learned that it was the Dorman manifold. Now, aparently on the Dorman website they carry a lifetime warranty but I have yet to call them and figure out what will be done next. My fingers are crossed but I doubt they will exchange it free of charge. Thank goodness its an easy part to replace yourself!

Reviewed by 12 customers

Displaying reviews 1-10

Back to top

Previous | Next »

 
2.0

Insufficient quality inspection/build process

By 

from Cameron, NC

Verified Reviewer

Pros

  • Does fit what I purchased it for

Cons

  • Had to repair before I could put it together

Best Uses

    Comments about Dorman - OE Solutions Exhaust Manifold Kit:

    I just love having to pull out a tap and die set to repair the threads on a new part. I had to put a cheater bar on my ratchet to remove 3 of 4 bolts from the mating surface where the catalytic convertor mounts to the manifold. 3 of the bolts were cross threaded damaging the threads on them and in the cast iron surface.

    • Was this a gift?:
    • No

    (1 of 1 customers found this review helpful)

     
    4.0

    Inexpensive Replacement

    By 

    from Bowling Green, KY

    About Me Auto Enthusiast

    See all my reviews

    Ask me a question

    3 or more reviews submitted

    Pros

    • Inexpensive

    Cons

    • Not California Compliant

    Best Uses

    • Everyday Driving
    • Replacement

    Comments about Dorman - OE Solutions Exhaust Manifold Kit:

    My daughter ran over a parking stop and cracked her manifold December 2009. It started throwing error codes, illuminated the check engine light and was running rough. I replaced the one piece factory unit with this and it worked for approximately 9 months without issue. However, I suspect this is a non-California catalytic converter but all Hondas are tuned for CA emmissions. Therefore, once this converter broke in, it no longer passes the stringent CA parameters and throws codes. The easy fix is to put a couple of modified non-foulers on the lower O2 sensor, problem solved. Been good ever since I did that.

    Yes, I would recommend to a friend that was aware of this fact. No, I would not recommend to a friend that doesn't do their own service and know what this requires.

    (2 of 3 customers found this review helpful)

     
    3.0

    Easy installation

    By 

    from Miami,Fl

    About Me Casual Driver, Mechanic

    Verified Buyer

    Pros

    • Easy To Install

    Cons

    • No Increase In Performance

    Best Uses

    • Everyday Driving
    • Replacement

    Comments about Dorman - OE Solutions Exhaust Manifold Kit:

    No. Comments

    (2 of 4 customers found this review helpful)

     
    5.0

    Nice complete kit

    By 

    from Pittsburgh PA

    About Me Casual Driver

    Verified Buyer

    Pros

    • Easy To Install

    Cons

      Best Uses

      • Everyday Driving

      Comments about Dorman - OE Solutions Exhaust Manifold Kit:

      Nice complete kit, includes all the hardware and gaskets. The instructions don't really match the parts, but its close enough to figure it out. A big plus is that the torque specs are included, I really appreciate that. Didn't realize that the exhaust manifold and cat are two different parts. In this case the car already had this kit installed once, so I could have saved a few bucks by just buying the cat.

      (6 of 14 customers found this review helpful)

       
      2.0

      catalytic converter is low quality

      By 

      from maryland

      About Me Casual Driver

      See all my reviews

      Helpful Reviewer

      Pros

      • Cheap

      Cons

        Best Uses

        • Everyday Driving

        Comments about Dorman - OE Solutions Exhaust Manifold Kit:

        bought when my exhaust manifold cracked, The 1996 civic stock manifold and catalytic converter are one unit. this was the cheapest unit around , 4 yrs years later, catalytic converter is now failing. The reason its cheap is because the converter is not well made. I would only recommend this unit to someone selling their car soon or someone in a state with no emissions testing

        (6 of 12 customers found this review helpful)

         
        2.0

        flawed design leaking almost right away

        By 

        from Chicago, IL

        Comments about Dorman - OE Solutions Exhaust Manifold Kit:

        After less than 10,000 miles there was a small leak between where the two pieces connect. 15K miles more down the road, One of the bolts that holds the two pieces together completely broke off causing a major leak. This problem even cause the inside cabin to fill with potentially dangerous fumes when blower was on. Unit will need to be taken off and weld shut asap. with all the windows closed and the blower blowing carbon monoxide into cabin for an hour or two who knows what could happen.

        (8 of 16 customers found this review helpful)

         
        5.0

        Works good for me

        By 

        from Hattiesburg, MS

        About Me Casual Driver

        Pros

        • Easy To Install

        Cons

          Best Uses

          • Everyday Driving
          • Replacement

          Comments about Dorman - OE Solutions Exhaust Manifold Kit:

          I am surprised at all the negative reviews. I bought this product in June of 2011 to replace the one I had in my 1999 Honda Civic. Mine was cracked right through where the oxygen sensor is located and I could smell exhaust inside the car. I actually like the two piece design. It makes it easy to install. I installed with no problems. Everything bolted up just fine. And this kit comes with everything you need to install the manifold except the oxygen sensor socket tool. I replaced both oxygen sensors when I did this job. So far to this day everything is fine. No problems. And fuel economy is good.

          (10 of 17 customers found this review helpful)

           
          1.0

          Failed 6 months later...

          By 

          from Silver Spring, MD

          About Me Casual Driver

          Helpful Reviewer

          Pros

          • Cheaper than OEM
          • Easy To Install

          Cons

          • Will not last long

          Best Uses

          • Replacement

          Comments about Dorman - OE Solutions Exhaust Manifold Kit:

          I purchased this manifold without first reading the reviews from previous customers. My manifold lasted a couple months longer than theirs, but for the price it definitely wasn't worth it. Check engine light came on a few weeks ago, and at first I thought it was my O2 sensors that had gone bad, but after changing them for new ones I quickly learned that it was the Dorman manifold. Now, aparently on the Dorman website they carry a lifetime warranty but I have yet to call them and figure out what will be done next. My fingers are crossed but I doubt they will exchange it free of charge. Thank goodness its an easy part to replace yourself!

          (8 of 15 customers found this review helpful)

           
          1.0

          Failed after 4 months

          By 

          from New Hampshire

          About Me Casual Driver

          Pros

            Cons

            • Unattractive Design

            Best Uses

            • Replacement

            Comments about Dorman - OE Solutions Exhaust Manifold Kit:

            It's easy to install, but failed after 4 months.

            (6 of 14 customers found this review helpful)

             
            1.0

            Dont waste your money

            By 

            from florida

            Pros

              Cons

              • Unattractive Design

              Best Uses

              • Everyday Driving

              Comments about Dorman - OE Solutions Exhaust Manifold Kit:

              This product is horrible stay away all i have had is trouble with this product reasoning changing this product is because most Honda exhaust manifolds crack around the cylinder head so the o2 sensors don't get a accurate signal either way the problem i was encountering is the manifold is a two piece and it leaks right around the seal between the two i have tried everything to stop it leaking i have put 5 gaskets to fix this issue and i have yet to fix it i finally got tired of this piece of garbage and welded it shut but don't waste your money. And from what i hear the converter doesn't work on this model either i have not encountered that yet. but everything eles i have

              • Car & Truck:
              • Mechanic

              Displaying reviews 1-10

              Back to top

              Previous | Next »

              Do you have questions about this product?

               

              Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

              3 Questions | 3 Answers
              Displaying questions 1-3
              • Q:

                How long is the warranty on this part?
                Asked on 4/7/2014 by Michael from United States

                1 answer

                • CUSTOMER CARE

                  A:

                  Hi Michael, I would happy to help! This part carries a limited lifetime replacement warranty. The lifetime warranty part can be refunded for cash/credit within the 90 time frame. After that time expires, it can only be exchanged for a new item. So the warranty is valid the life of the part as long as the customer owns the vehicle.

                  Answered on 4/7/2014 by Steve from AAP
              • Q:

                is this catalytic converter california approved
                Asked on 5/31/2012 by Anonymous

                1 answer

                • CUSTOMER CARE

                  A:

                  Sorry, this Dorman - OE Solutions Exhaust Manifold Kit (Part# 674-439) is not legal in california.

                  Answered on 6/1/2012 by Dennis from AAP
              • Q:

                Has anyone used the Dorman manifold on their Honda Civic?
                Asked on 10/24/2009 by Big C

                1 answer

                • CUSTOMER CARE

                  A:

                  Yes, these parts are reproductions of original equipment.

                  Answered on 10/24/2009 by Paul from Advance Auto Parts
              Displaying questions 1-3

              Do you have a question about this product? 

              Check out the specials in our monthly flyer.
               
               
              Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.