MAPerformance Sleeved EJ Series Engine Block without Crank - Customer Supplied Block | 2004-2021 Subaru WRX STI (EJ25-SLV-NC)

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Email -

Phone 1-888-627-3736

Fits Your:
FREE Delivery Expected by , when ordered within hrs and mins
Block Type
$1,795.00 $1,974.99Instant Savings of 9% ($179.99)

Earn  $143.60 In MAP Rewards!

2004-2021 Subaru WRX STI Sleeved EJ Series Engine Block without Crank - Customer Supplied OEM Block by MAPerformance

We won't settle for anything less than the best when it comes to our engine builds. We utilize quality components along with specialized machining and assembly techniques for each platform to ensure the best possible performance. If we see a gap in regards to acceptable product offerings on the market we often develop our own like the Ultimate Duty Connecting Rods. We thoroughly inspect, blueprint, clean, and assemble our engines in a clean room and most of the machine work is performed in-house to satisfy our stringent requirements. We have had great success in building countless motors for every imaginable application from the weekend warrior to the all-out race car.

Included Services

  • Engine blocks visit our hot tank before and after machining for a clean, finished appearance.
  • L.A. Sleeves are installed allowing for ultimate strength!
  • The last step in the machining process is resurfacing. We pride ourselves on the surface finish (RA) we achieve as it is of the utmost importance regarding head gasket sealing.

Please Note: Shipping IS included in the final price!


  • 2004-2021 Subaru WRX STI

What's In The Box?

  • 1 - MAPerformance Spec L.A. Sleeves Kit
  • 1 - Customer Supplied Subaru OEM Block


  • MAPerformance's Standard Limited Warranty

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