Subaru STI EJ257 2.5L OEM Shortblock – WRX / STI

Genuine Subaru EJ257 STI Short Block

This is a brand-new, genuine Subaru 2.5L short block used in 2006+ WRX STI models. It features a semi-closed deck design for added strength and includes cast pistons, STI connecting rods, and crankshaft from the factory.

It’s a great option for engine rebuilds, upgrades, or conversions. The EJ257 is a direct fit for WRX and STI models, although WRX models will require tuning and supporting mods to suit the increased capacity.

• Genuine Subaru EJ257 2.5L short block
• Semi-closed deck design for added strength
• Includes cast pistons, STI rods, and crankshaft
• Direct fit for WRX STI, compatible with WRX (requires tuning)

Note:

1. This is a short block only – heads, gaskets, and accessories not included.
2. 2.0L WRX heads will bolt on but will change compression ratio.
3. For high-power builds, consider upgrading to forged pistons