EXHAUST MANIFOLD STUDS/NUTS

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Mar 11, 2014 | 09:32 PM

99f350sd

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From: Lyndonville, Vermont

EXHAUST MANIFOLD STUDS/NUTS

I need the four studs and nuts for the header pipes...Any sources?
Thanks
Dick

Mar 12, 2014 | 08:12 AM

DFord

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From: St Louis, MO

NAPA always had a good assortment of items like that, try them.

Mar 12, 2014 | 08:34 AM

99f350sd

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From: Lyndonville, Vermont

Anyone know the size? I need to get them ahead of time.

Mar 13, 2014 | 05:37 PM

xlt4wd90

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From: SoCal

Unfortunately, all of mine are in place, so I can't go measure them. But I know that they have 15mm hex heads, and I would guess that they are most likely 12mm coarse threads. Can you pull one off of your manifolds to see? I'm guessing you're asking because you're wanting to replace them.

By the way, on my 4 liter engine, they are bolts that go into threaded holes in the manifold. So no nuts.

Mar 13, 2014 | 06:51 PM

99f350sd

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From: Lyndonville, Vermont

Oh bolts huh! I'll have to check that out..Thanks

Dick

Mar 14, 2014 | 10:54 PM

93nighthawk

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From: Mitchell, SD

Are you talking the bolts/studs that hold the manifold to the head? Or manifold to pipe?

Mar 14, 2014 | 11:10 PM

99f350sd

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From: Lyndonville, Vermont

manifold to pipe.

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Mar 15, 2014 | 03:54 PM

99f350sd

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From: Lyndonville, Vermont

Thanks... So they are 12mm I'm guessing?

Mar 15, 2014 | 04:21 PM

#10

93nighthawk

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From: Mitchell, SD

Yes, they are a 12mm, coarse thread by the looks of it, the catalog does not go into any more detail.

http://i.ebayimg.com/00/s/NDQ2WDU1NA...Pm!~~60_35.JPG

Mar 16, 2014 | 05:56 PM

#11

DFord

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From: St Louis, MO

The 12mm was just a tease - looking a little more one eBay I found the full specks: "M12X1.75X49.5" (and of course, it's hardened). There are two vendors selling the N803420-S2 bolts right now. Search for that number to find them.