Dorman 674-170 Exhaust Manifold Review

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(More customer reviews)This exhaust manifold is said to be a direct replacement for the factory manifold. Well, it is anything but. It does match the bolt holes but that is as far as it matches. The EGR tube is now about an inch off. The exhaust outlet is also slightly off which makes the exhaust pipe hit the bell housing. I have no way to make a new EGR tube. It is not flexible enough to bend. Stay away from Dorman unless you want nothing but headaches.

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Dorman OE Solutions Exhaust Manifold 674-248 Review

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(More customer reviews)Shopped around for the replacement manifold locally. No one had the part in stock, so it was going to need to be ordered anyway. The Amazon pricing was cheaper than any local suppliers, and even included free shipping. Took a few days to arrive on my doorstep. Installation was quick and easy using the gaskets that were supplied with the new manifold. I did need to use the heat shield and O2 sensor from the old manifold, which was expected. The new manifold fit fine, mounting surfaces were correctly machined and sealed well with the new gaskets, and it has been working with no issues. I gave this 4 stars instead of 5 only because of some casting flaws around the ports that match up to the ports on the head. Otherwise it has been perfect.Dorman OE Solutions Exhaust Manifold 674-248

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Dorman 674-675 Exhaust Manifold Review

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(More customer reviews)After an early mishap with manifolds, this turned out to be the manifold I needed for a Chevy S-10 with the Flex Fuel option.
And I am sure this product would have functioned flawlessly if I had been able to remove the old manifold.


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Dorman OE Solutions Exhaust Manifold 674-509 Review

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(More customer reviews)The Dorman Exhaust manifold is a well made product and the price is right. However, the heat shield (both old and new) did not fit on the Honda Minivan 2.2 engine. We could have refabricated it to make it fit, but we decided to not spend the extra time, and left it off.

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Dorman OE Solutions Exhaust Manifold 674-439 Review

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(More customer reviews)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.

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