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Restock Alert Iag 900 Closed Deck Long Block Engine W/ Stage 4 Heads For 06-14 Wrx, 04-21 Sti, 04-13 Fxt, 05-09 Lgt Limited Time 80% Off [jVGvpNLx]

$127.99 $409.99 -69%

IAG 900 Closed Deck Long Block Engine: High-Performance PowerhouseIntroducing the IAG 900 Closed Deck Long Block Engine, a high-performance powerhouse designed for the discerning enthusiast seeking unparalleled power and reliability. This engine is s

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Restock Alert Iag 900 Closed Deck Long Block Engine W/ Stage 4 Heads For 06-14 Wrx, 04-21 Sti, 04-13 Fxt, 05-09 Lgt Limited Time 80% Off [jVGvpNLx]

IAG 900 Closed Deck Long Block Engine: High-Performance Powerhouse

Introducing the IAG 900 Closed Deck Long Block Engine, a high-performance powerhouse designed for the discerning enthusiast seeking unparalleled power and reliability. This engine is specifically crafted for 06-14 WRX, 04-21 STI, 04-13 FXT, and 05-09 LGT models, offering a seamless blend of power, precision, and durability. The IAG 900 Long Block Engine includes a Magnum Closed Deck Short Block, which is bored and honed to 99.75mm, ensuring optimal performance and longevity. The use of brand new Subaru OEM case halves, along with IAG Fire-Lock™ receiver groove machining, guarantees exceptional strength and resistance to head gasket failure.

IAG 900 Long Block Engine: Premium Components and Specifications

The IAG 900 Long Block Engine is equipped with premium components and specifications that elevate its performance and durability. The Magnum Closed Deck Short Block boasts case halves converted to Closed Deck using brand new Subaru OEM case halves, bored and honed to 99.75mm. This design enhances structural integrity and reduces engine movement, resulting in superior performance. Additionally, the engine features IAG Fire-Lock™ receiver groove machining, which is the latest solution to prevent head gasket failure on high horsepower and high boost Subaru engines. The engine also includes IAG-Spec JE FSR 99.75mm 2618 Forged Pistons, Electroless Nickel Plated Tops & Ring area, Ring Set, .250" / .906" H13 Wrist Pins, Clips, and Tuff H-Beam +2mm / ARP 625+ Rod Bolts for unmatched strength and reliability.

IAG 900 Long Block Engine: Performance and Versatility

The IAG 900 Closed Deck Long Block Engine is perfect for those looking to enhance their vehicle's performance and achieve greater power output. Its Stage 4 Heads, featuring brand new Subaru OEM WRX STI Cylinder Head Castings and CNC Ported Intake and Exhaust Runners, ensure maximum airflow and improved combustion efficiency. The engine is further enhanced with GSC 37mm (+1mm) Intake Valves, GSC 33mm (+1mm) SuperAlloy Exhaust Valves, GSC Beehive Valve Springs & Retainers, and GSC Maganese Valve Guides, all of which contribute to superior performance and durability. This engine is an ideal choice for enthusiasts who demand the best and are looking to maximize their vehicle's potential. With its comprehensive range of features and specifications, the IAG 900 Closed Deck Long Block Engine is a true force to be reckoned with.

What Our Customers Say

January 24, 2026

Absolutely no complaints!

An outstanding product with a very, very sleek design.

- Rhiain E..

January 24, 2026

Absolutely no complaints!

It executes its function with elegance.

- Faye O..

January 24, 2026

Absolutely no complaints!

A very good and a very, very, very useful product.

- Llyr G..

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