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Dorman 674 556 Exhaust Manifold Select Review

3

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🌫️ Exhaust & Emissions, 🛠️ Replacement Parts

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Description of Dorman 674 556 Exhaust Manifold Select

Upgraded materials - this replacement exhaust manifold is constructed of ductile iron to prevent future warping and cracking. Complete kit - includes new manifold, manifold gasket, flange gasket, 4 studs, 4 nuts. Direct fit - reverse engineered from original equipment for seamless installation. Quality engineering - designed and tested in the United States. Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool.

Reviews

Global ratings 3
  • 5
    1
  • 4
    0
  • 3
    2
  • 2
    0
  • 1
    0

Type of review

Revainrating 5 out of 5

Works great for California smog

I used this to replace an old cracked manifold as I usually use a non-original manifold and also need it to pass smog. Easy to install even for beginners.

Pros
  • Quality Assurance - Designed and tested in the USA
Cons
  • Has defects

Revainrating 3 out of 5

Reason for 3 Stars on Parts

First. THIS APPLIES TO CA SMOG ONLY. If there is only one (1) cat in your car, then this is not the collector! The quality of the manifold is good (you won't find anything better) but the gasket is not fully inserted. Therefore, once shipped, they are thrown away across the country. So besides the cost to the collector I had to buy new gaskets! Take a look at the cat gasket to the manifold. Like 3 gaskets, but only 2 bent.

Pros
  • Complete Kit - Includes New Manifold, Manifold Gasket, Flange Gasket, 4 Studs, 4 Nuts
Cons
  • Almost OK

Revainrating 3 out of 5

The heat shield on the engine side interferes with the oil filter.

Bad: Internal heat shield between manifold and engine is blocking the oil filter. You can't change the oil filter unless you remove it and leave the manifold without this heat shield. It works well but not as designed as Toyota. The good: It works and hasn't broken in 8 years and 80,000 miles, unlike the Toyota that came with the car. It took so long probably because as mentioned above I removed the heat shield interfering with the oil filter. For the price, I don't think you can expect much…

Pros
  • Advanced Materials - This replacement exhaust manifold is made of malleable iron to prevent future warping and cracking.
Cons
  • Good but not great.