Subaru EJ257 2004-2006 STi 2.5 Liter Shortblock

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Subaru EJ257 2004-2006 STi 2.5 Liter Shortblock

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Quick Overview

This is a genuine Subaru EJ257 2.5 liter shortblock. This shortblock is standard equipment on the 2004+ US Market STi.
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Product Description

The 2.5 liter block makes a great upgrade for all WRX models, since there is no replacement for displacement. The US STi block features a semi-closed deck for increased strength. This motor is physically a bolt-in for all US-market WRX and STi models (WRX's will require ECU tuning, bigger injectors, etc.) NOTES: 1. THIS IS NOT A COMPLETE MOTOR: This is a fully assembled bottom end, which consists of a block, crank, rods and pistons only. You will need to reuse your stock cylinder heads or purchase replacements. 2. The OEM 2.0L WRX heads will bolt-on for to the 06/2006 & before 2.5L short block, but there will be a bump in compression. 3. For high-powered applications, we recommend replacing the cast OEM pistons in this block with CP Forged OEM-size units.

Additional Information

Manufacturer Subaru
SKU 10103AC030
Ships In No
Fitment 2004-2007 Subaru STi
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