I am looking for all options for a replacement engine for my son's 2007 outback wagon with a standard EJ- 2.5.  The block is bad, the head are ok.  I know that engines from an outback and legacy work.  If someone can confirm which years exactly and do Impreza 2.5's  or forester 2.5 blocks work?  If so, which years?

 

Thanks in advance.

Using your heads and intake manifold any 2000 to 2012 will work.

Better options would be 06 up.

In 05 Subaru went to Drive by Wire . The Radiator and water pump housing leads are in slightly different places, so don't cut those hoses you may need them.

Depending on block year, you may need the radiator.

You can use  an Impreza block, but the oil pan is different.

I believe those are the differences. If I think of anything else, I'll chime in.

O.

Edited August 13, 2025Aug 13 by ocei77
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For my older Subaru, a 2.5 engine was available locally for under $500; mechanic said he'd install it for less than that too, so under a grand all in.