12 MM bolt that holds the Intake Manifold to the Bracket

StubZz · Post by **StubZz** » Thu Dec 14, 2017 3:45 pm

Hi all!

I recently replaced my PCV system, and in doing so I didn't tighten the bolt that holds the intake manifold to the bracket on the bottom to the correct torque. What is the size of the bolt so I can get a new one? Also, on a happier note, my terrible idling problems have gone away. I installed a new flame trap and vacuum tree, and removed and reinstalled the IAC valve, so my car now idles at around 850-900 RPM!

Thanks,

StubZz

Post by **scot850** » Thu Dec 14, 2017 4:00 pm

That is great news on the idling which is just where it should be now!

Not sure from your description which bolt you are talking about? The one for the dip-stick tube that fits from the underside or which one? Picture would help if you can.

Neil.

Post by **abscate** » Thu Dec 14, 2017 6:52 pm

Volvo parts lisle is my go to for exploded diagrams showing hardware and part numbers

I think every 12mm head bolt is a M8 thread

Post by **jimmy57** » Fri Dec 15, 2017 6:20 am

8mm 1.25 pitch and the dipstick one is 15 mm long, the brace is a little longer so likely it's 20 mm long. BUT, the description is sketchy so can you take a picture?

Post by **scot850** » Fri Dec 15, 2017 10:17 am

That jimmy57 was my point too. I think we are thinking of the same bolts but description is vague.

Neil.

Post by **abscate** » Fri Dec 15, 2017 10:30 am

982793 for the dipstick

985186 for both intake manifold mount screws.