IAG Performance

750 EJ20 Closed Deck Case

$2,699.99

SKU: IAG-ENG-C755

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The IAG Performance 750 EJ20 Closed Deck Case is a critical upgrade for Subaru EJ20 engines, offering significantly enhanced strength and reliability. This closed deck case design, featuring 11mm head stud machining, is engineered to withstand higher power outputs and demanding operating conditions compared to factory cases. It serves as a robust foundation for both performance street and track-oriented builds. This case is designed as a direct replacement for Subaru WRX, STI, Forester XT (FXT), and Legacy GT (LGT) models that utilize the EJ20 engine. Its construction aims to reinforce the weakest points of the standard engine block, providing a more resilient platform for aggressive tuning and increased boost levels. The 11mm head stud machining further contributes to improved cylinder head clamping force, essential for maintaining seal integrity under high stress. This product is sold as case halves only and typically requires machining services such as boring and honing to be performed before assembly. Buyers should consult with their engine builder or a qualified performance shop to ensure proper preparation and installation. The IAG 750 EJ20 Closed Deck Case is an investment in the longevity and performance potential of your Subaru's engine.

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-C755
CategoryEngines and Components

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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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