Engine Builds

IAG 550 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 750 EJ20 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 750 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 950 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 950 EJ20 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG Stage 4 Tuff Subaru EJ20 Closed Deck Short Block The IAG Stage 4 Tuff Short Block starts with brand new Subaru 2.0L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept the IAG CLOSED Deck Inserts...

IAG Stage 4 Tuff Subaru EJ25 Closed Deck Short Block The IAG Stage 4 Tuff Short Block starts with brand new Subaru 2.5L engine case halves. IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to accept the IAG CLOSED Deck Inserts...

IAG 1150 EJ25 2.5L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

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 /...

IAG 600 FA20 DIT 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 600 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 12.5:1 STANDARD COMPRESSION window.SHOGUN_IMAGE_ELEMENTS...

IAG 600 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 10.5:1 LOW COMPRESSION window.SHOGUN_IMAGE_ELEMENTS =...

IAG Stage 2.5 FA20 DIT Closed Deck Short Block The IAG Stage 2.5 short block starts with new Subaru FA 2.0L engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to...

IAG Stage 2.5 FA20 Closed Deck Short Block The IAG Stage 2.5 short block starts with new Subaru FA 2.0L BRZ engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to...

IAG Stage 2.5 FA20 Closed Deck Short Block The IAG Stage 2.5 short block starts with new Subaru FA 2.0L BRZ engine case halves that are machined for improved oiling. Then IAG machines the case halves assembled together in our Haas VF-4SS CNC mill to...

IAG 800 FA20 DIT 2.0L SUBARU SHORT BLOCK window.SHOGUN_IMAGE_ELEMENTS = window.SHOGUN_IMAGE_ELEMENTS || new...

IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 12.5:1 STANDARD COMPRESSION window.SHOGUN_IMAGE_ELEMENTS...

IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 10.5:1 STANDARD COMPRESSION window.SHOGUN_IMAGE_ELEMENTS...

IAG 550 LONG BLOCK ENGINE WITH IAG 550 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT ...

IAG 750 LONG BLOCK ENGINE WITH IAG 750 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT ...

IAG 950 LONG BLOCK ENGINE WITH IAG 950 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT ...

IAG 1150 LONG BLOCK ENGINE WITH IAG 1150 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT window...

IAG 800 FA20F DIT TIMED LONG BLOCK FOR 2015-2021 WRX window.SHOGUN_IMAGE_ELEMENTS =...

IAG 600 FA20F DIT TIMED LONG BLOCK FOR 2015-2021 WRX window.SHOGUN_IMAGE_ELEMENTS =...

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...

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)...

After years of research and development testing, the IAG Performance Fire-Lock™ head gasket is the newest solution to preventing head gasket failure on high horsepower and high boost Subaru EJ25 engines. This solution is loosely derived from diesel...

The IAG Performance Fire-Lock head gasket solution was created after years of research and development testing to prevent head gasket failure on high horsepower and high boost Subaru EJ Series engines. This solution is loosely derived from diesel...

The IAG Performance Cooper ring head gasket is manufactured from an asbestos-free composite raw material and features silicone based beading applied to critical areas to improve sealing around all water and oil passages. What sets this gasket apart from...

The IAG Performance Cooper ring head gasket is manufactured from an asbestos-free composite raw material and features silicone based beading applied to critical areas to improve sealing around all water and oil passages. What sets this gasket apart from...