IAG / Crest CNC Billet Aluminum EJ25 Subaru Case Halves for Subaru Multiple Fitments

• 2004–2013 Subaru | Forester XT
• 2015–2021 Subaru | WRX
• 2015–2021 Subaru | WRX STI
• 2005-2009 Subaru | Legacy GT

Description :

The CNC Billet Aluminum EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness that exists in max-power builds.

The IAG / Crest CNC EJ Block, (Formerly Willall) is machined from 6061-T6 Aerospace Aluminum and features Darton Ductile Iron Sleeves. The block is designed with increased material thickness over the OEM cast aluminum case halves and adds a unique 4-bolt bottom end for additional strength.

Case Features:

• Machined from solid billet 6061-T6 Aerospace grade aluminum
• Darton Ductile iron sleeves
• Increased material thickness in all known weak points (around head studs, bottom end location)
• Unique 4 bolt bottom end strengthening
• Threads are rolled into the block rather than conventionally cut for much greater strength
• Full cooling system operation
• Radiused coolant and oil galleries for improved flow and less foaming/turbulence
• Fits all factory engine bay ancillaries (i.e. AC/PS/etc.)
• Multiple Times stiffer and stronger than the stock case
• Precision machined for a superior surface finish
• Hard anodized to avoid marking or straining
• ARP Case Bolts & Crest Hardware

Additional Options:

• Bore & Hone: Bore & Hone to customer specification
• Fire-Lock: Fire-Lock machine the deck surface
• Head Studs: IAG / ARP 14mm Head Studs, nuts, and washers - *14mm head studs are required for this block
  
• Machining Deck: - Machine head gasket deck surface

Minimum Requirements To Build & Assemble:

• 14mm Head Studs (Sold separately)
• Internal components (Pistons, Rods, Bearings, Crank, All sold separately).
• Decking head gasket surface required.

Vehicles:

• 2004 - 2009 Subaru Forester XT
• 2006 - 2013 Subaru Forester XT Limited
• 2011 Subaru Forester XT Premium
• 2002 - 2014 Subaru Impreza WRX
• 2004 - 2014 Subaru Impreza WRX STI
• 2005 - 2008 Subaru Legacy GT
• 2009 Subaru Legacy GT spec.B
• 2010 - 2014 Subaru WRX
• 2010 - 2021 Subaru WRX STI

Review our Shipping Policy for delivery details, shipping costs and exclusions.

Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov