Subaru Engine Compability

Asked by May 24, 2013 at 01:45 PM about the 1999 Subaru Legacy 4 Dr GT AWD Wagon

Question type: General

I am thinking about to replace the engine of my 99 Subaru Legacy and I found one from a 97 Subaru Legacy Outback that looks the same my engine nimber is EJ25DAXEYL and the Outback Subaru is EJ25DAXCYL so
de only difference betwwn number is just one letter ( E and C) is this going to be a problem that I should be aware or they are 100% compatible?

2 Answers
6,335

answered 4 years ago

the EJ25DAXCYL is completely a "phase 1" motor, the EJ25DAXEYL uses the phase 2 shortblock motor and only slightly different intake manifold, but still the phase 1 heads heads, another thing different on the EJ25DAXEYL is a newer style coil pack and thinner boot spark plugs. Overall you could drop it in and be just fine it's not 100% the same but it's not like it's going to run incorrectly.

3,165

answered 4 years ago

Depending on what the issue is, it may be more worth your while to swap short blocks rather than the complete motor. The short blocks are interchangeable with a slight change in compression.

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