IAG Stage 3 Magnum EJ25 Closed Deck Case - 14mm H.S.M. Fire-Lock (No Bore & Hone) - for Subaru WRX STI LGT FXT.

IAG Stage 3 Magnum EJ25 Closed Deck Case - 14mm H.S.M. Fire-Lock (No Bore & Hone) - for Subaru WRX STI LGT FXT.

$2,649.99 Sold out

Product Part Number: IAG-ENG-1818
Categories: Engine, IAG Products

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Installation Services Offered

  • Description
  • Shipping / Refunds / FAQs
IAG's Stage 3 Magnum Closed Deck converted case halves were created to be the most affordable and cost-effective short block modification for EJ25 Subaru turbo engines. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept the IAG CLOSED Deck Inserts that transform the block into a solid deck. The unique inserts feature small passages that allow needed coolant flow to the deck surface. The case halves are then CNC machined for our new Fire-Lock head gasket solution that is loosely derived from diesel technology where a counterbore step is machined around each cylinder bore allowing specially sized fire rings to drop into the machined area and head gasket bores. The Magnum case is then drilled and tapped to accept 14mm head studs that combined with the IAG Fire-Lock head gasket set greatly reduces head gasket failure during high cylinder pressure scenarios. The OEM Subaru EJ25 case is referred to as a semi-open (or semi-closed) deck. The block is essentially an open deck with 3 narrow supports tying in the main case to the tops of the sleeves. This feature was a slight improvement over the previous open deck EJ20 cases. The purpose of the deck supports is to keep the sleeve from moving. While conceptually this is an improvement, the reality is that it simply isn't enough for a high horsepower Subaru. The weakest point of the sleeve is still left open and unaddressed.
  • IAG's Magnum Closed Deck is suitable for street or race use.
  • Designed for those wanting to assemble their own engine

Additional Attributes:

  • GTIN: 00887753778420

Extened Information:

  • Emissions : Not Legal For C.A.R.B. - This part is not legal for sale or use in C.A.R.B. restricted areas
  • Life Cycle Status: Available To Order

Packaging:

  • Quantity of Each: 1
  • Package UOM: EA
  • Dimension: 19 x 70 x 16 inches

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FAQ

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  • We are typically very quick and have a 24-48 hour turnaround time. Transit time depends on your order and which warehouse we are shipping from, but typical transit times are between 5-7 business days from one side of the US to the other.

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  • Yes, we do price match reputable competitors in the marketplace. If you find a product cheaper elsewhere, please email us the (1) link of the product from our website and (2) the link to the competitor site. We will make an assessment on our end if we are able to price match or not and respond to you via email.

DO YOU GUYS INSTALL?

  • Our shop services range from routine maintenance, to full on track monsters. If you purchased a part from us, ask us about scheduling time to have the part installed!

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  • No, only specifically marked items or orders over $100 will ship for free unless indicated otherwise.

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  • UPS handles all US Shipments.

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  • 30-Day Money Back Guarantee as long as the product has ZERO signs of use and HAS NOT been opened. 

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  • IF an item does not fit, then we'd be more than happy to guide the fitment process with you over the phone or over email. 

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