IAG / Crest CNC Billet Aluminum EJ25 Subaru Case Halves For WRX, STI, Forester XT & Legacy GT

IAG / Crest CNC Billet Aluminum EJ25 Subaru Case Includes:

• 
  (x2) Crest Billet / Sleeved Case Halves

IAG / Crest CNC Billet Aluminum EJ25 Subaru 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

*Attention: Special note about using ARP Case Bolts- IAG uses specific torque specs and procedures please refer to the guide provided.