Customer Login:

Email Address:

Password:

Forgot your password?

Create A New Account

Shopping Cart:

NEW: IAG / RCM Alloy Cam Gears SHOP NOW

Home
IAG Parts
Engine

Engine

IAG Performance Subaru WRX STI Engine Parts

Engine

IAG manufactures and provides high-quality engine parts for your 2002-2023 EJ20, EJ25, FA20, FA20F, FA24 and FA24F Subaru. Short blocks, Longs Blocks, Pistons, Rods, Cases, Gaskets, Hardware, Mounts, Oiling Components, Intakes, Fuel Components, Exhausts, and more. IAG Performance has all of the parts you need for your high-performance Subaru WRX, STI, Forester XT, Legacy GT, and BRZ.

IAG Performance Air Induction Parts

Air Induction

Find IAG Performance TGVs, Intakes, Throttle Bodies, Phenolic Spacers, Intake Manifold Gaskets, and Hardware for your high-performance Subaru in the Air Induction section of our website. Shop our wide selection of products that fit your WRX, STI, BRZ, Legacy GT, or Forester XT.

Photo collage of coolant tanks for Subarus.

Cooling

Keep your Subaru WRX or STI running cool with top-of-the-line cooling solutions from IAG Performance. Our IAG Coolant Expansion Tanks are engineered for optimal performance and durability, ensuring efficient coolant management to keep your engine running smoothly. Experience peace of mind on the road knowing that your Subaru is equipped with the best cooling technology available from IAG Performance.

IAG Performance Subaru Alternator Relocation Kits and Coil Pack Connectors

Electrical

Find IAG Performance Alternator Relocation kits and Replacement Coil Pack Connectors for your Subaru in the Electrical section of our website. Shop our selection of products that fit your WRX, STI, BRZ, Legacy GT, or Forester XT.

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.

Subaru Exterior Body Parts & Accessories

Engine Dressup

Enhance your Subaru STI or WRX's performance and track reliability with the IAG Performance Engine Fluid Containment Pan. Designed to prevent oil leaks on the track, this essential component ensures your Subaru is track-compliant for drag racing events. Trust in IAG Performance to provide the critical engine protection you need for peak performance, every time you hit the track.

Engine Management

Engine Management

Subaru Exterior Body Parts & Accessories

Engine Management

Optimize your Subaru's performance with cutting-edge engine management solutions from IAG Performance. Explore our range of precision-engineered components, including MAF Sensor Block Off Plates, MAF Sensor Mounting Flanges, and MAP Sensor Adapters. Designed specifically for Subaru engines.

IAG Performance Subaru Exhaust Products

Exhausts

Find IAG Performance Headers, Heat Shield Blankets, Exhaust Hardware, and, Gaskets for your Subaru in the Exhaust section of our website. Shop our selection of products that fit your WRX, STI, BRZ, Legacy GT, or Forester XT EJ20, EJ25, and FA20 engines.

IAG Performance Subaru Fuel System Products

Fuel System

Find IAG Performance Fuel Rails, Fuel Lines, Fuel Filters, Fuel Gauges, Fuel Pressure Regulators, Fuel Injectors, and Line Packages for your Subaru in the Fuel System section of our website. Shop our selection of products that fit your WRX, STI, BRZ, Legacy GT, or Forester XT EJ20, EJ25, and FA20 engines.

IAG Performance Long Blocks

Long Blocks

Find IAG Performance completely built Long Block engines for your Subaru in the Long Blocks section of our website. Shop our selection of high-performance quality built EJ20, EJ25, and FA20 engines that fit your WRX, STI, BRZ, Legacy GT, or Forester XT.

IAG Performance Engine Mounts

Mounts

Shop IAG Performance for replacement performance engine mounts that fit your Subaru WRX, STI, FXT, LGT, and BRZ. Find products such as Engine Mounts, Bushings, Brackets, Hardware, and more.

IAG Performance Oiling Products

Oiling

Shop IAG Performance for Engine Oiling Components that fit your Subaru WRX, STI, FXT, LGT, and BRZ. Find products such as Air/Oil Separators, Oil, Oil Pans, Oil Baffles, Windage Trays, Oil Pickups, Oil Pumps, Oil Lines, Oil Filters, Hardware, and more.

IAG Performance Short Blocks

Short Blocks

Find IAG Performance assembled Short Blocks for your Subaru in the Short Block section of our website. Shop our complete line of manufactured and completely assembled high-performance short block engines that fit your WRX, STI, BRZ, Legacy GT, or Forester XT EJ20, EJ25, and FA20 engines.

Turbos & Superchargers

Turbos & Superchargers

sidebar:

view as

550 BHP

Quick view
IAG Performance

IAG 550 2.5L Subaru Short Block for WRX, STI, Legacy GT, Forester XT - 550 BHP
Availability: Usually Ships in 24 to 72 Hours

$3,999.99

IAG 550 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-c96c5173-3a93-4dd2-a22b-1463d6a5535d' }) ...

Choose Options
Choose Options
Add to Wish List
750 BHP

Quick view
IAG Performance

IAG 750 EJ20 Subaru Closed Deck Short Block For 2002-05 WRX - 750 BHP
Availability: Usually Ships in 2 to 3 Weeks

$4,999.99

IAG 750 EJ20 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-014fa3ed-a60a-4954-83a3-d7159ca9361e' }) ...

Choose Options
Choose Options
Add to Wish List
750 BHP

Quick view
IAG Performance

IAG 750 EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - 750BHP
Availability: 750 & 750IH Usually Ships in 24 to 72 Hours

MSRP:

$4,999.99 - $5,099.99

IAG 750 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-746264b6-6afe-43ed-90c4-3430111a1dc3' }) ...

Choose Options
Choose Options
Add to Wish List
950 BHP

Quick view
IAG Performance

IAG 950 EJ25 Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - 950 BHP
Availability: Usually Ships in 24 to 72 Hours

$5,999.99

IAG 950 EJ25 2.5L SUBARU SHORT BLOCK { "__shgImageElements": { "uuid": "s-2b23c85b-2d6b-499b-84ba-196d50d44763" } } RACE ON SUNDAY, WORK ON MONDAY The IAG 950 Short Block is the ultimate...

Choose Options
Choose Options
Add to Wish List
1150 BHP

Quick view
IAG Performance

IAG 1150 2.5L Subaru Closed Deck Short Block For WRX, STI, LGT, FXT - 1150 BHP
Availability: Usually Ships in 1 to 2 Weeks

$8,999.99

IAG 1150 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-c654e6f4-6f53-4f14-8ea4-ae528a102c9d' }) ...

Choose Options
Choose Options
Add to Wish List
1100+ BHP

Quick view
IAG Performance

IAG Performance / Crest CNC Stage X 2.5L Subaru Billet Aluminum Short Block For WRX, STI, LGT, FXT
Availability: Usually Ships in 6+ Months

$17,599.99

IAG / Crest CNC Stage X Billet Aluminum EJ25 Subaru Short Block The CNC Billet Aluminum EJ case seeks to change the Subaru performance tuning market by reinventing the EJ and addressing virtually every weakness that exists in max-power builds. Each IAG /...

Choose Options
Choose Options
Add to Wish List
600 BHP

Quick view
IAG Performance

IAG 600 FA20 DIT Subaru Short Block for 2015-21 WRX - 600 BHP
Availability: Usually Ships in 24 to 72 Hours

$4,799.99

IAG 600 FA20 DIT 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-bf1fb559-df2c-4799-a256-8799dfda2f3d' }) ...

Choose Options
Choose Options
Add to Wish List
600 BHP

Quick view
IAG Performance

IAG 600 FA20 Short Block For 2013-20 BRZ / FR-S / GT-86 (Standard Compression 12.5:1) - 600 BHP
Availability: Usually Ships in 3 to 5 Days

$4,799.99

IAG 600 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 12.5:1 STANDARD COMPRESSION window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
600 BHP

Quick view
IAG Performance

IAG 600 FA20 Subaru Short Block for 2013-20 BRZ / FR-S / GT86 (10.5:1 Compression Ratio) - 600 BHP
Availability: Usually Ships in 3 to 5 Days

$4,799.99

IAG 600 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 10.5:1 LOW COMPRESSION window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
800 BHP

Quick view
IAG Performance

IAG 800 FA20 DIT Subaru Closed Deck Short Block for 2015-21 WRX - 800 BHP
Availability: Usually Ships in 24 to 72 Hours

$5,999.99

IAG 800 FA20 DIT 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-e2f1652a-a386-436b-8a68-8e48d60baf9d' }) ...

Choose Options
Choose Options
Add to Wish List
800 BHP

Quick view
IAG Performance

IAG 800 FA20 Subaru Closed Deck Short Block for 2013-20 BRZ / FR-S / GT86 (12.5:1 Compression Ratio) - 800 BHP
Availability: Usually Ships in 1 to 2 Weeks

$5,999.99

IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 12.5:1 STANDARD COMPRESSION window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
800 BHP

Quick view
IAG Performance

IAG 800 FA20 Subaru Closed Deck Short Block for 2013-20 BRZ / FR-S / GT86 (10.5:1 Compression Ratio) - 800 BHP
Availability: Usually Ships in 1 to 2 Weeks

$5,999.99

IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 10.5:1 LOW COMPRESSION window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 550 Long Block Engine w/ IAG 550 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Availability: Usually Ships in 1 to 2 Weeks

MSRP:

$9,499.99 - $9,699.99

IAG 550 LONG BLOCK ENGINE WITH IAG 550 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Availability: Usually Ships in 9 to 10 Weeks

MSRP:

$11,799.99 - $11,999.99

IAG 750 LONG BLOCK ENGINE WITH IAG 750 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Availability: Usually Ships in 9 to 10 Weeks

MSRP:

$12,999.99 - $13,199.99

IAG 950 LONG BLOCK ENGINE WITH IAG 950 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT { "__shgImageElements": { "uuid": "s-2c77a939-aba7-44f6-8418-1aa2700e73e9" } } A "DROP-IN" SOLUTION The...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads for 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT
Availability: Usually Ships in 9 to 10 Weeks

MSRP:

$17,499.99 - $17,699.99

IAG 1150 LONG BLOCK ENGINE WITH IAG 1150 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT { "__shgImageElements": { "uuid": "s-09faa8df-c8af-47f8-961e-774ecfe3108c" } } A "DROP-IN" SOLUTION The...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 800 FA20 DIT Closed Deck Long Block Engine w/ IAG 800 Heads for 2015-21 Subaru WRX
Availability: Usually Ships in 9 to 10 Weeks

$16,999.99

IAG 800 FA20F DIT TIMED LONG BLOCK FOR 2015-2021 WRX window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-fc99c78b-7adf-4bf2-84a5-4597e22c2f1d' }) ...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG 600 FA20 DIT Long Block Engine w/ IAG 600 Heads for 2015-21 Subaru WRX
Availability: Usually Ships in 9 to 10 Weeks

$14,499.99

IAG 600 FA20F DIT TIMED LONG BLOCK FOR 2015-2021 WRX window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Timed Long Block Component Packages For Subaru WRX, STI, LGT, FXT
Availability: Usually Ships in 5 to 7 Days

MSRP:

$2,699.99 - $3,399.99

IAG TIMED LONG BLOCK COMPONENT PACKAGES FOR SUBARU EJ20/EJ25 window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Timed Long Block Install Kits For Subaru EJ25 Engines
Availability: Usually Ships in 5 to 7 Days

MSRP:

$1,199.99 - $1,399.99

IAG TIMED LONG BLOCK INSTALL KITS FOR SUBARU EJ ENGINES window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Air / Oil Separator (AOS) Fits 2022+ Subaru WRX
Availability: Usually Ships in 24 to 72 Hours

$499.99

IAG AIR / OIL SEPARATOR (AOS) FITS 2022+ SUBARU WRX window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({ uuid:...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Air / Oil Separator (AOS) For 2008-14 Subaru WRX & 2008-21 STI
Availability: Usually Ships in 24 to 72 Hours

$439.99

IAG AIR / OIL SEPARATOR (AOS) FOR 2008-14 SUBARU IMPREZA WRX & 2008-21 STI { "__shgImageV2Elements": { "uuid": "s-00627073-5477-4ad4-9055-1da80438e592" } } SAFEGUARD YOUR SUBARU The...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Air / Oil Separator (AOS) Fits 2015-21 Subaru Impreza WRX
Availability: Usually Ships in 24 to 72 Hours

$459.99

IAG AIR / OIL SEPARATOR (AOS) FITS 2015-21 SUBARU IMPREZA WRX { "__shgImageV2Elements": { "uuid": "s-1676b411-607d-4575-a76a-ded41b889308" } } PROTECT YOUR ENGINE The IAG Air / Oil...

Choose Options
Choose Options
Add to Wish List
Quick view
IAG Performance

IAG Air / Oil Separator (AOS) Fits 2006-07 Subaru Impreza WRX & 2004-07 STI
Availability: Usually Ships in 1 to 2 Weeks

$439.99

IAG AIR / OIL SEPARATOR (AOS) FITS 2006-07 SUBARU IMPREZA WRX & 2004-07 STI window.SHOGUN_IMAGE_V2_ELEMENTS = window.SHOGUN_IMAGE_V2_ELEMENTS || new Array(); window.SHOGUN_IMAGE_V2_ELEMENTS.push({...

Choose Options
Choose Options
Add to Wish List
Sold Out

Quick view
IAG Performance

IAG Performance Universal Drag Catch Can
Availability: Usually Ships in 24 to 72 Hours

$499.99

IAG UNIVERSAL DRAG CATCH CAN window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new Array(); window.SHOGUN_IMAGE_ELEMENTS.push({ uuid: 's-1019cf85-2452-431a-8bcb-517aae64b294' }) A UNIVERSAL...

Out of Stock
Out of Stock
Add to Wish List
Quick view
IAG Performance

IAG AOS Strut Tower Mounting Bracket for Rotated Turbo Kits Fits 2006-07 WRX, 2004-07 STI, 2004-08 FXT
Availability: Usually Ships in 24 to 72 Hours

$15.99

The IAG Performance Air Oil Separator Strut Tower mounting bracket is designed to replace the standard mounting bracket included with IAG's AOS kits produced before mid April 2016. The bracket is made from 3/16" aluminum that is powder coated black and...

Add to Cart
Add to Cart
Add to Wish List
Quick view
IAG Performance

IAG AOS Strut Tower Mounting Bracket For 2008-21 Subaru WRX / STI, 2005-09 LGT
Availability: Usually Ships in 24 to 72 Hours

$15.99

The IAG Performance AOS (Air Oil Separator) Strut Tower mounting bracket was originally designed to replace the standard mounting bracket included with early version 1 IAG's AOS kits. The redesigned bracket enabled installers to manipulate the AOS on the...

Add to Cart
Add to Cart
Add to Wish List
Quick view
IAG Performance

IAG AOS Pitch Mount Bracket for 2006-07 Subaru WRX / STI, 2004-08 FXT
Availability: Usually Ships in 24 to 72 Hours

$41.99

The IAG Performance AOS (Air Oil Separator) pitch mount bracket is designed to replace the standard mounting bracket included with IAG's AOS kits. The 2 piece billet aluminum bracket is CNC machined in our Westminster facility and features all the...

Add to Cart
Add to Cart
Add to Wish List
Quick view
IAG Performance

IAG AOS Pitch Mount Bracket for 2008-14 Subaru WRX / STI, 2005-09 LGT
Availability: Usually Ships in 24 to 72 Hours

$54.99

The IAG Performance AOS (Air Oil Separator) pitch mount bracket is designed to replace the standard mounting bracket included with IAG's AOS kits. The 3 piece billet aluminum bracket is CNC machined in our Westminster facility and features all the...

Add to Cart
Add to Cart
Add to Wish List
Quick view
IAG Performance

IAG AOS Replacement Harness Relocation Bracket 08-14 Subaru WRX, 08-21 STI & 05-09 LGT
Availability: Usually Ships in 24 to 72 Hours

$10.99

The IAG wiring harness relocation bracket is included in an IAG Street Series and Competition Series AOS for the 2008-14 Subaru WRX, 2008-21 STI and 2005-09 Legacy GT (PN# IAG-ENG-7151 and PN# IAG-ENG-7251).

Add to Cart
Add to Cart
Add to Wish List

Items 1 to 30 of 260 total

1
2
3
4
5
6
Next

Fast Shipping

Military Discount

Secure Shopping

Easy Returns