Engines and Components› Engines, Blocks and Components

IAG Performance

Magnum EJ25 Closed Deck Short Block

$4,999.99

SKU: IAG-ENG-1280

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In Stock
Ships by Sep 13
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$100 Minimum Order
30 Days Return
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Description

The IAG Performance Magnum EJ25 is a closed-deck short block engineered for Subaru WRX, STI, LGT, and FXT applications. This unit has seen approximately 20,000 miles of use, with a history of primarily running on E85 fuel, indicating its compatibility with high-performance fuel systems. Regular oil changes were performed around every 1,500 miles, and it comes equipped with a 12mm oil pump for enhanced lubrication. This short block is a robust option for those seeking to upgrade or replace their Subaru's engine. The closed-deck design offers increased strength and durability compared to open-deck configurations, making it suitable for demanding performance applications. Its previous operation on E85 suggests it has been part of a setup capable of handling the demands of this fuel. While specific fitment details are not exhaustively listed, the product is associated with models such as the WRX, STI, Legacy GT (LGT), and Forester XT (FXT). Potential buyers should verify compatibility with their specific year and engine variant. The product comes with a 12-month manufacturer's warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandIAG Performance
Part NumberIAG-ENG-1280
CategoryEngines and Components
5,000+ Trusted brands
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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