IPD sale Volvo Parts
Did you know? 🤔
Logged in users can get email notification of topic replies Log in or register (free).
Amazon Link Buy your stuff using this and it helps MVS!

Haldex DEM pump O-ring size Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
2004 - 2007 V70 R
2001 - 2007 XC-70
2001 - 2009 S60
2003 - 2007 S60 R

- Pete -
Posts: 66
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 06 V70's
Location: Minnesota/Wisconsin
Has thanked: 13 times
Been thanked: 13 times
United States of America
- Pete -

Haldex DEM pump O-ring size

Post by - Pete - » Mon Jul 01, 2019 8:35 am

Hey guys,

Anybody happen to have replaced the original O-rings with generic ones upon pump re-install?
And happen to recall the size?

If not, I'm gonna take a stab at it with a standard o-ring assortment & hope for the best. After reinstalling my DEM pump after cleaning & reusing old O-rings there appears to be a teeny tiny leak.

I just can't see spending $49 for 2 O-rings & two torx screws.


2001 V70XC 135k
2004 V70 AWD 130k
2004 XC70 278k
2006 XC70 150k

XC70Rider
Posts: 380
Joined: Thu Oct 18, 2018 7:09 pm
Year and Model: 2007 XC70
Location: MA
Has thanked: 20 times
Been thanked: 15 times
United States of America
XC70Rider

Re: Haldex DEM pump O-ring size

Post by XC70Rider » Mon Jul 01, 2019 9:12 am

40mm outer diameter

3mm thick
These users thanked the author XC70Rider for the post:
- Pete -



- Pete -
Posts: 66
Joined: Fri Dec 06, 2013 10:13 pm
Year and Model: 01, 04, 04, 06 V70's
Location: Minnesota/Wisconsin
Has thanked: 13 times
Been thanked: 13 times
United States of America
- Pete -

Re: Haldex DEM pump O-ring size

Post by - Pete - » Mon Jul 01, 2019 10:04 am

Thank you!


2001 V70XC 135k
2004 V70 AWD 130k
2004 XC70 278k
2006 XC70 150k

XC70Rider
Posts: 380
Joined: Thu Oct 18, 2018 7:09 pm
Year and Model: 2007 XC70
Location: MA
Has thanked: 20 times
Been thanked: 15 times
United States of America
XC70Rider

Re: Haldex DEM pump O-ring size  Topic is solved

Post by XC70Rider » Mon Jul 01, 2019 12:16 pm

You could also buy this O-ring kit for only $4.40

https://www.ebay.com/itm/Haldex-AOC-pre ... 2749.l2649

I installed it on my OEM oil pump and it fit fine.
These users thanked the author XC70Rider for the post:
- Pete -



Post Reply