Subaru OEM Shortblock w/ Heat Treated Crankshaft (09+ STI EJ257)

Brand New 2009+ STI EJ257 Shortblock with Nitride Treated Crankshaft

110.00 lbs
110.00 lbs
Our Price: Special Price $1,800.00 Our Price: Regular Price $2,137.14

This is a brand new, completely assembled short-block directly from Subaru. This is the version out of the newest 2010 STi, and has the Heat treated crankshaft. Subaru no longer offers the nitride treated crank.

This is a great place to start if you are building a hybrid engine with your 2.0 liter heads on a 2.5 liter block. Or maybe you just need a replacement block for your STi. This comes with the block, crank, pistons, and rods completely assembled, and ready to bold your heads on.

If you are putting this block in a car that it was not originally designed for, it carries no warranty expressed or implied.

This part number has recently superseded to a newer number from Subaru. The previous part numbers from Subaru were 10103AB850, 10103AC050 and 10103AB950.


warning_symbolWARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to

110.00 lbs
Need Help with this product?

Chat with our staff using our Live Chat, Call us at 303.402.5142 or Email us at
Fast Shipping

Products ship within 2 days.

Easy Returns

Friendly return policy because our priority is making sure you have the right product.

Safe and Secure Shopping
Copyright © 2019 Flatirons Tuning LLC. All rights reserved.
click here