1998 v70 Bolt that holds down vacuum tree 982757 m6 16mm Topic is solved

veezmachine · Post by **veezmachine** » 13 Oct 2025, 00:19

Hey everyone! I've been lurking on this forum for a little while and used some guides to do some work on my S70 T5. While it's been super helpful, I was wondering if anyone knew what the exact dimensions were to the bolt that holds down the vacuum tree on the 1998 model? I broke the head of it off while trying to install the new one and managed to get it out (thankfully), but couldn't find anything about it online. Not to mention, I don't have any tools to measure the length/width of it directly, so I'm kind of at a loss here. Thanks for the help!

Post by **abscate** » 13 Oct 2025, 02:53

Sometimes you can get the part number for a bolt from the online Volvo parts store , then get the actual bolt size from Skandix.de

Let me try….

Volvo parts online gives part 982757

Skandix .de gives us it’s a m6 16 mm long bolt!

Woo hoo

I believe the 16 mm refers to overall length?

Don’t forget to replace you 978111 oring while you have it off…

Post by **scot850** » 13 Oct 2025, 08:19

You will have to work out the thread pitch on the bolt. If you have a bolt store near you, take the remains with you and they can check the thread you need.

Even if you can't get the exact length, a 15mm will likely work, or a longer one and cut it down. If you are buying from a bolt store, get a matching nut, fit it onto the bolt before cutting it down below the point of the cut and then use it as a thread chaser.

Neil.

Post by **abscate** » 13 Oct 2025, 13:24

If you count the 16 threads on the bolt above it will almost certainly tell you its 1.00mm/thread

veezmachine · Post by **veezmachine** » 13 Oct 2025, 21:30

Thanks everyone! Managed to get the right bolt size, which turned out to be that m6 1.0mm one. Thanks a ton for the help!