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09 Legacy GT, 08 Legacy 2.5i, 09 Outback 2.5i
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165 Posts
Discussion Starter #1
I am curious what the external oil pump connectors are designed for. 2009 OB EJ253 here. There looks to be two connections on the bottom and then one pointing out/upwards from the front of the oil pump towards the water pump.
 

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03 H6 OBW & 06 WRX Sportwagon
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17,693 Posts
Perhaps installation of the relief valve components. And machining passages?
 

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2005 Legacy GT wagon 5MT Limited
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320 Posts
The angled shaft is the relief valve. The vertical shafts are the in & out passages; the bolts at their bottoms are drain plugs.
 
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