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IAG Parts
Engine
Engine Builds

Engine Builds

IAG Performance Subaru Engine Builds and Solutions

Engine Builds

Find IAG Performance Long Blocks, Short Blocks, Cylinder Heads, Internal Engine, and Assembly Parts for your Subaru in the Engine Build section of our website. Shop our selection of products and completely built engines that fit your WRX, STI, BRZ, Legacy GT, or Forester XT EJ20, EJ25, and FA20 engines.

Cylinder Heads & Parts

Cylinder Heads & Parts

Engine Assembly Parts

Engine Assembly Parts

Short Blocks & Internals

Short Blocks & Internals

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IAG Performance

IAG Red Racing Timing Belt for 2002-14 Subaru WRX, 04-21 STI, 04-13 FXT, 05-12 LGT
Availability: Usually Ships in 24 to 72 Hours

$229.99

IAG Red Racing Timing Belt The IAG Performance Red Racing Timing Belt is designed to work with all Subaru EJ series engines. The high-strength Kevlar construction and attractive red color make it a great choice for your Subaru engine bay. We have...

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IAG Performance

IAG Timing Guide, Comp Tensioner & Black Racing Timing Belt Kit for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-12 LGT
Availability: Usually Ships in 24 to 72 Hours

$799.99

IAG offers a package combining the IAG Racing Timing Belt with our timing belt guide, and V2 Competition Series Tensioner for your 2004-21 Subaru STI, 2002-04 WRX, 2004-13 Forester XT, and 05-12 Legacy GT. Inside the package is our IAG Billet Timing Belt...

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IAG Performance

IAG Timing Guide, Comp Tensioner & Red Racing Timing Belt Kit for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-12 LGT
Availability: Usually Ships in 24 to 72 Hours

$799.99

IAG offers a package combining the IAG Racing Timing Belt with our timing belt guide, and V2 Competition Series Tensioner for your 2004-21 Subaru STI, 2002-04 WRX, 2004-13 Forester XT, and 05-12 Legacy GT. Inside the package is our IAG Billet Timing Belt...

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IAG Performance

IAG Long Block Basic Installation Kit for EJ25 WRX, STI, FXT, LGT
Availability: Usually Ships in 24 to 72 Hours

$1,799.99

The IAG Long Block Engine Basic Installation Kits provide all of the basic components needed to install one of our EJ25 Long Block Engine Packages in one complete kit. All fluids for initial break-in are included. Just select the kit which fits your year...

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IAG Performance

IAG Long Block Basic Installation Kit for 2015-21 WRX FA20F DIT
Availability: Usually Ships in 24 to 72 Hours

$1,099.99

The IAG Long Block Engine Basic Installation Kits provide all of the basic components needed to install one of our FA20F DIT WRX Long Block Engine Packages in one complete kit. All fluids for initial break-in are included. Components Included: (x2)...

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IAG Performance

IAG Engine Installation Fluid Kit For Subaru EJ Engines
Availability: Usually Ships in 24 to 72 Hours

$399.99

IAG Engine Installation Fluid Kit - Continental US Only The IAG Engine Installation Fluid Kit provides all of the engine break-in oil and coolant you'll need to install one of our EJ25 Long Block Engine Packages in one complete kit. Pair this kit with...

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IAG Performance

IAG Single Valve Spring and Titanium Retainer Set For Subaru EJ Engine
Availability: Usually Ships in 24 to 72 Hours

$249.99

The IAG Single Valve Spring & Titanium Retainer Set reduces valvetrain weight by up to 153.6g and increases spring pressure, which enables you to run increased boost and RPM over stock. The set works with all Subaru EJ20 and EJ25 engines and should...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2005-09 Subaru Legacy GT
Availability: Usually Ships in 24 to 72 Hours

$749.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2005-09 LEGACY GT window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2002 Subaru WRX
Availability: Usually Ships in 24 to 72 Hours

$729.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2002 SUBARU WRX window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2003-05 Subaru WRX
Availability: Usually Ships in 24 to 72 Hours

$729.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2003-05 SUBARU WRX window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2006-07 Subaru WRX
Availability: Usually Ships in 24 to 72 Hours

$749.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2006-07 SUBARU WRX window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2008-14 Subaru WRX
Availability: Usually Ships in 24 to 72 Hours

$749.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2008-14 SUBARU WRX window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2004-07 Subaru STI
Availability: Usually Ships in 24 to 72 Hours

$749.99

IAG 105K SERVICE PACKAGE WITH AISIN WATER PUMP FOR 2004-07 SUBARU STI window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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IAG Performance

IAG 105K Service Package w/ AISIN Water Pump Fits 2008-21 Subaru STI
Availability: Usually Ships in 24 to 72 Hours

$749.99

IAG 105K SERVICE PACKAGE W/ AISIN WATER PUMP FOR 2008-21 SUBARU STI window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

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