This is a brand new, completely assembled 2.5 Liter EJ255 short-block directly from Subaru.This block uses the -24cc dish in the piston, which will yield a compression ratio closer to stock for hybrid swaps. Though the block was designed for the D25 heads, they can be used with the 2.0L S20 heads for a hybrid swap.
This block is the factory block for most of the 2.5L WRX, Legacy GT and Outback XT. If you are unsure this is the correct block for you, please contact us with a VIN to verify.
If you are putting this block in a car that it was not originally designed for, it carries no warranty expressed or implied.
The original Subaru part number for this block was 10103AB630, 10103AB930, and10103AC040but they both supersede to the10103AC880.