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Haldex DEM pump O-ring size Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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- Pete -
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Haldex DEM pump O-ring size

Post by - Pete - »

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 200k
2004 V70 AWD 174k
2004 V70R M66 147k
2004 XC70 361k
1995 F250 7.3PSD 262k
2014 Ram 3500 DRW 116k
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XC70Rider
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Year and Model: 2007 XC70
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Post by XC70Rider »

40mm outer diameter

3mm thick
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- Pete -
Posts: 960
Joined: 6 December 2013
Year and Model: 01, 04, 04, 04 V70's
Location: Minnesota/Wisconsin
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Post by - Pete - »

Thank you!
2001 V70XC 200k
2004 V70 AWD 174k
2004 V70R M66 147k
2004 XC70 361k
1995 F250 7.3PSD 262k
2014 Ram 3500 DRW 116k
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XC70Rider
Posts: 538
Joined: 18 October 2018
Year and Model: 2007 XC70
Location: TN
Has thanked: 35 times
Been thanked: 41 times

Post by XC70Rider »

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.
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