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Premium Member
'91 MR2 Turbo, '20 BRZ
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235 Posts
Based on the leakage, it would have to either come from the oil pump gear seal, or the gasket between oil pump and body. I've never seen a problem in either area, since those come installed with the replacement pump. If tightening bolts didn't improve, then either that groove gasket of the oil seal was pinched (when they put it together) or that pump gear seal is gone. Probably need to remove the cover to find out... though a gear seal leak is more likely to fling oil on the timing belt....

One thing I've noticed, inspecting "old stock - new parts" is some have been on the shelves a LOOONG TIME such that it's impacted the flexibility seals.

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