Engine Long Block

IAG Performance IAG-ENG-4025WS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025WS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4025WS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025WS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4025VS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025VS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4025VS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025VS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4025DS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025DS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4025DS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025DS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

Regular price $12,749.99 USD

Regular price ~~$12,749.99 USD~~ Sale price $12,749.99 USD
Unit price per
IAG Performance IAG-ENG-4015W IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 08-21 STI.

IAG Performance IAG-ENG-4015W IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 08-21 STI.

Regular price $11,549.99 USD

Regular price ~~$11,549.99 USD~~ Sale price $11,549.99 USD
Unit price per
IAG Performance IAG-ENG-4015V IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 04-07 STI.

IAG Performance IAG-ENG-4015V IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 04-07 STI.

Regular price $11,549.99 USD

Regular price ~~$11,549.99 USD~~ Sale price $11,549.99 USD
Unit price per
IAG Performance IAG-ENG-4015D 700 Closed Deck Long Block Engine w/ Stage 3 Heads

IAG Performance IAG-ENG-4015D 700 Closed Deck Long Block Engine w/ Stage 3 Heads

Regular price $11,549.99 USD

Regular price ~~$11,549.99 USD~~ Sale price $11,549.99 USD
Unit price per
IAG Performance IAG-ENG-4010W IAG 600 Long Block Engine w/ Stage 2 Heads for 08-21 STI.

IAG Performance IAG-ENG-4010W IAG 600 Long Block Engine w/ Stage 2 Heads for 08-21 STI.

Regular price $10,449.99 USD

Regular price ~~$10,449.99 USD~~ Sale price $10,449.99 USD
Unit price per
IAG Performance IAG-ENG-4010V IAG 600 Long Block Engine w/ Stage 2 Heads for 04-07 STI.

IAG Performance IAG-ENG-4010V IAG 600 Long Block Engine w/ Stage 2 Heads for 04-07 STI.

Regular price $10,449.99 USD

Regular price ~~$10,449.99 USD~~ Sale price $10,449.99 USD
Unit price per
IAG Performance IAG-ENG-4010D IAG 600 Long Block Engine w/ Stage 2 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-4010D IAG 600 Long Block Engine w/ Stage 2 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

Regular price $10,449.99 USD

Regular price ~~$10,449.99 USD~~ Sale price $10,449.99 USD
Unit price per
IAG Performance IAG-ENG-4005W IAG 550 Long Block Engine w/ Stage 1 Heads for 08-21 STI.

IAG Performance IAG-ENG-4005W IAG 550 Long Block Engine w/ Stage 1 Heads for 08-21 STI.

Regular price $9,499.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,499.99 USD
Unit price per
IAG Performance IAG-ENG-4005V IAG 550 Long Block Engine w/ Stage 1 Heads for 04-07 STI.

IAG Performance IAG-ENG-4005V IAG 550 Long Block Engine w/ Stage 1 Heads for 04-07 STI.

Regular price $9,499.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,499.99 USD
Unit price per
IAG Performance IAG-ENG-4005D IAG 550 Long Block Engine w/ Stage 1 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-4005D IAG 550 Long Block Engine w/ Stage 1 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

Regular price $9,499.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,499.99 USD
Unit price per
IAG Performance IAG-ENG-1813 Stage 3 EJ25 Closed Deck Case - 1/2" H.S.M. 99.75mm Bore & Hone

IAG Performance IAG-ENG-1813 Stage 3 EJ25 Closed Deck Case - 1/2" H.S.M. 99.75mm Bore & Hone

Regular price $2,749.99 USD

Regular price ~~$2,749.99 USD~~ Sale price $2,749.99 USD
Unit price per

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Collection: Engine Long Block

IAG Performance IAG-ENG-4025WS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025WS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025WS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025WS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025VS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025VS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025VS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025VS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025DS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025DS3 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S3 Cams

IAG Performance IAG-ENG-4025DS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4025DS2 900 Closed Deck Long Block Engine w/ Stage 4 Heads & GSC S2 Cams

IAG Performance IAG-ENG-4015W IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 08-21 STI.

IAG Performance IAG-ENG-4015W IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 08-21 STI.

IAG Performance IAG-ENG-4015V IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 04-07 STI.

IAG Performance IAG-ENG-4015V IAG 700 Closed Deck Long Block Engine w/ Stage 3 Heads for 04-07 STI.

IAG Performance IAG-ENG-4015D 700 Closed Deck Long Block Engine w/ Stage 3 Heads

IAG Performance IAG-ENG-4015D 700 Closed Deck Long Block Engine w/ Stage 3 Heads

IAG Performance IAG-ENG-4010W IAG 600 Long Block Engine w/ Stage 2 Heads for 08-21 STI.

IAG Performance IAG-ENG-4010W IAG 600 Long Block Engine w/ Stage 2 Heads for 08-21 STI.

IAG Performance IAG-ENG-4010V IAG 600 Long Block Engine w/ Stage 2 Heads for 04-07 STI.

IAG Performance IAG-ENG-4010V IAG 600 Long Block Engine w/ Stage 2 Heads for 04-07 STI.

IAG Performance IAG-ENG-4010D IAG 600 Long Block Engine w/ Stage 2 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-4010D IAG 600 Long Block Engine w/ Stage 2 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-4005W IAG 550 Long Block Engine w/ Stage 1 Heads for 08-21 STI.

IAG Performance IAG-ENG-4005W IAG 550 Long Block Engine w/ Stage 1 Heads for 08-21 STI.

IAG Performance IAG-ENG-4005V IAG 550 Long Block Engine w/ Stage 1 Heads for 04-07 STI.

IAG Performance IAG-ENG-4005V IAG 550 Long Block Engine w/ Stage 1 Heads for 04-07 STI.

IAG Performance IAG-ENG-4005D IAG 550 Long Block Engine w/ Stage 1 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-4005D IAG 550 Long Block Engine w/ Stage 1 Heads for 06-14 WRX, 04-13 FXT, 05-09 LGT.

IAG Performance IAG-ENG-1813 Stage 3 EJ25 Closed Deck Case - 1/2" H.S.M. 99.75mm Bore & Hone

IAG Performance IAG-ENG-1813 Stage 3 EJ25 Closed Deck Case - 1/2" H.S.M. 99.75mm Bore & Hone