Engine blown after 1,300 miles, what now?

[suttonb3]

I need a little help installing this new oil cooler. My FSM shows 2 o-rings (marked "H") between adapter A and B.

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I just took the old one apart and only found one o-ring, in the groove on the aluminum adapter.

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In my master gasket set i found an o-ring that fits (the one I'm pointing to with the pick, I'm not sure it's needed) , but it just doesn't seem right, and I NEED to make sure it's right.

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Also, the center of these adapters don't seem right, though there really isn't another way for them to line up.

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Thanks for your thoughts!

Ben