IAG Stage 1 Plus 2.5L Subaru Short Block for WRX, STI, Legacy GT, Forester XT

IAG Stage 1 Plus  2.5L Subaru Short Block for WRX, STI, Forester XT, Legacy GT
IAG Stage 1 Plus EJ257 Built Subaru Short Block


 
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MSRP: $3,359.99
Our Price: $3,199.99
Savings: $160.00

Availability: Usually Ships in 3 to 4 Weeks
Part#: IAG-ENG-1001


Seal Kit*:
Wrist Pin / Cover Seals P# IAG-ENG-1720 [Add $105.99]
Not Required

Shipping Method*:
IAG Pelican Case
Cardboard Box

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Description Applications
 

IAG Stage 1 Plus Short Block


The IAG Stage 1 Plus short block starts with new Subaru 2.5L EJ25 engine case halves that are bored and honed to 99.75mm on our in-house Sunnen SV-10. IAG‘s in-house honing process is able to set piston to wall clearances tighter for a quieter running engine. The short block is measured and assembled using a new 2017+ Subaru 2.5L nitride treated STI crankshaft that is matched to ACL Race or King main bearings. Early style OEM STI rods are utilized along with ACL or King rod bearings. The case halves are sealed with new OEM case bolts and sealant. Finally, Manley 99.75mm Platinum Series Forged Pistons are spec'd and installed finishing off the short block.

The IAG Stage 1 Plus Short Block has a power output rating of 475BHP.

Stage 1 Plus Short Block Includes:
  • Case Halves - Brand new Subaru OEM case halves, bored and honed in-house to 99.75mm Bore
  • Pistons - Manley 99.75mm Platinum Forged Pistons, Ringset, Tool Steel Pins, Clips, (Coated Skirts and Offset Wrist Pin)
  • Connecting Rods - Early OEM (Stronger Style) STI rods
  • Rod / Main Bearings - ACL or King Bearings
  • Crankshaft - Standard New Subaru Nitride Treated 2017+ STI Crankshaft
  • Case / Main Bolts - Standard FHI Subaru case bolts

Additional Options Available:
Hardware / Seals - OEM cover and seal kit - $105.99

*All IAG Short Blocks are balanced and blueprinted.

Compression Ratio: 8.5:1 on D Cylinder Heads (EJ255)
Compression Ratio: 8.2:1 on B, V and W EJ257 Heads with standard thickness gasket.


Hardware / Seal Option:


Not planning on reusing your original short block service plugs and covers? IAG offers a simple comprehensive cover and seal kit that includes (1) Rear main seal, (3) OEM wrist pin plugs, (3) OEM wrist pin plug washers, (1) OEM separator cover, (6) OEM separator cover bolts, (1) OEM wrist pin service cover, (1) OEM wrist pin service cover O-ring and (2) OEM wrist pin service cover screws. *If you are reusing your original wrist pin service plugs and covers always replace the (3) OEM wrist pin plug washers and (1) wrist pin service cover O-ring before installing a short block to avoid potential leaks. *Never reuse a rear main seal on a new short block.



Optional Shipping Methods:

Red Carpet Service - IAG Pelican Case (Recommended):
Subaru EJ25 Seal Kit


Red Carpet Service / IAG Pelican Cases are a premium shipping option offered by IAG. Your IAG short block is shipped via a returnable polypropylene military grade IAG Pelican case, which provides optimal protection while in transit. Please contact an IAG sales associate at (410)-840-3555 within 2 business days of your purchase to provide credit card confirmation and approval for Pelican shipping - further details and logistics are explained in our Post Sale PDF document, which can be found below. The IAG Pelican case must simply be returned to IAG within 7 days of the receipt of your engine and carries no additional cost vs. cardboard box shipping. If the case is not returned in the required timeline, a core charge of $399 is placed on your card. *Please note the Red Carpet Service / IAG Pelican Case premium shipping option service is only available for the lower 48 states within the USA.

Cardboard Box:
Blocks can alternatively be sent in a standard cardboard box, but bear a greater risk of damage in transit. While cost is the same, we suggest a Pelican case that ensures safe transit.

Please review the PDF document below regarding installation, break-in procedures, warranty information, and our Pelican Case Shipping Service. After ordering your block, please call our sales team at 410-840-3555 to approve Pelican shipping and secure the safest shipping method in the aftermarket!

PDF After Sale Document - Contains Shipping, Engine Care and Warranty Information

Features
  • Manley 99.75mm Platinum Series Pistons, Ringset, Tool Steel Pins and Clips (w/ Coated Skirts and Offset Wrist Pin)
  • New FHI Subaru Case Halves at 99.75mm
  • New FHI Subaru Early STI (Stronger Style) Connecting Rods
  • New FHI Subaru Nitride Treated 2017+ STI Crankshaft
  • ACL or King Rod Bearings
  • ACL or King Main Bearings
  • New FHI Main Case Bolts
  • IAG Spec Blueprint Sheet
  • Power Output Rating: 475BHP

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