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Bye-Bye 6.0, Hello 7.3!
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80 Posts
Did a set of these on the shop F-550 last month. They tightened up fine. I did a test fit on the bench, no issues with the supplied bolts.


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Six Point Slow
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83 Posts
I have a set on one of my trucks also, no issues with fitment in any way went together like a glove.
 

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133 Posts
I just installed them last weekend. Went together without a problem and seal well
 

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2 Posts
Added these to my 2001 f250 sd truck, and removed the leaky, crusty old ones...no more leaks, better design , and really wasnt that hard of a job... well worth the money.
 

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284 Posts
What purpose does adding/ replacing with bellowed fix
 

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Administrator
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8,316 Posts
The stock up pipes have a donut gasket that keep them sealed over time they start to leak. The reason there is donuts is to allow movement when the pipes heat up and cool down. Usually replacing just the donuts won't work because the pipe is damaged. So by removing the donuts and adding bellows it will stay sealed up and allow expansion and contraction.
 

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Does anyone that's used the Dorman stuff have any updates with time and mileage? Seems like a great deal and I haven't been able to find the International stuff for less than $450.
 

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156 Posts
I just installed a set a few weeks back so cannot attest to the longevity. The Holes for the bolts are run all the way thru now so the bottoming out of too long of a bolt should not be a concern at all. Had to do a bit of cleanup on the baby's butt due to some metal still being inside from the machining. $160 shipped to the door from Advanced after digging for a $50 discount code. Boost is up to 27'ish from a max of 14 before.
 

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Administrator
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8,316 Posts
I have had them for about 5 k miles with no problems.

Get them from advanced auto with promo code trt30.
 

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67 Posts
I recently just added dorman up pipes. My collector was drilled and tapped all the way through I could put a longer bolt in if I had wanted to.
 

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shade tree mechanic
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85 Posts
mine are too and just added mine 2 months ago and have 4 k miles on them now. i had them thermal coated inside and out before installed.
 

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52 Posts
I ordered the $85 Ebay kit. Will check bolt length before installation but I am 99% sure these come from the same factory as the Dorman kit. It looks identical in every way in the photos.
 

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129 Posts
kinda tough for us guys with "early 99's", motor date code of june98. I dont think anybody made bellowed pipes for that transition model. if anybody knows, please tell me QUICK, as my motor is out but going back in soon.
 

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8 Posts
FYI since your talking about Dorman up pipes I thought I'd put my 2 cents in. I had a leaking driver side exhaust manifold and ordered a Dorman manifold to replace it with. I broke 2 of them before I just returned the last on for my money back. They both broke in the same place, the first bolt closest to the radiator. Torque them to 45ft lbs and "crack" The problem with them is the big "China" cast into them. Save your money.
 
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