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Collection: IAG Performance

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Alternator Mount Kit (2 products)
Clutch Disc Intermediate Plate (1 product)
Clutch Pressure Plate and Disc Set (3 products)
Differential Gear Set (2 products)
Engine Block (1 product)
Engine Coolant Reservoir (2 products)
Engine Cylinder Head Gasket (2 products)
Engine Cylinder Head Plug (1 product)
Engine Cylinder Head Set (58 products)
Engine Cylinder Head Stud (2 products)
Engine Gasket Set (9 products)
Engine Intake Manifold Runner Control Valve (4 products)
Engine Long Block (29 products)
Engine Mount (6 products)
Engine Mount Kit (3 products)
Engine Oil Catch Can (2 products)
Engine Oil Change Kit (3 products)
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Engine Oil Pan Baffle (1 product)
Engine Oil Pan Kit (5 products)
Engine Oil Pump (4 products)
Engine Oil Separator (14 products)
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Engine Oil Strainer (1 product)
Engine Oil Sump Windage Tray (2 products)
Engine Short Block (14 products)
Engine Short Ram Air Intake (2 products)
Engine Timing Belt (1 product)
Engine Timing Belt Component Kit (4 products)
Engine Timing Belt Kit with Water Pump (7 products)
Engine Timing Belt Tensioner (2 products)
Engine Valve Cover Gasket (2 products)
Exhaust Header (2 products)
Fuel Hose Kit (131 products)
Fuel Injection Fuel Rail (3 products)
Fuel Injection Pressure Regulator (1 product)
Fuel Injection Throttle Body (6 products)
Fuel Injection Throttle Body Adapter (1 product)
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Fuel Injector Cushion Ring (1 product)
Manual Transmission Fluid (1 product)
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Manual Transmission Mount (9 products)
Manual Transmission Shifter Assembly (1 product)
Manual Transmission Synchro Assembly (4 products)
Power Steering Line (2 products)
Skid Plate (1 product)
Turbocharger Oil Line (1 product)

Alternator Mount Kit (2 products)
Clutch Disc Intermediate Plate (1 product)
Clutch Pressure Plate and Disc Set (3 products)
Differential Gear Set (2 products)
Engine Block (1 product)
Engine Coolant Reservoir (2 products)
Engine Cylinder Head Gasket (2 products)
Engine Cylinder Head Plug (1 product)
Engine Cylinder Head Set (58 products)
Engine Cylinder Head Stud (2 products)
Engine Gasket Set (9 products)
Engine Intake Manifold Runner Control Valve (4 products)
Engine Long Block (29 products)
Engine Mount (6 products)
Engine Mount Kit (3 products)
Engine Oil Catch Can (2 products)
Engine Oil Change Kit (3 products)
Engine Oil Pan (4 products)
Engine Oil Pan Baffle (1 product)
Engine Oil Pan Kit (5 products)
Engine Oil Pump (4 products)
Engine Oil Separator (14 products)
Engine Oil Separator Hose (5 products)
Engine Oil Strainer (1 product)
Engine Oil Sump Windage Tray (2 products)
Engine Short Block (14 products)
Engine Short Ram Air Intake (2 products)
Engine Timing Belt (1 product)
Engine Timing Belt Component Kit (4 products)
Engine Timing Belt Kit with Water Pump (7 products)
Engine Timing Belt Tensioner (2 products)
Engine Valve Cover Gasket (2 products)
Exhaust Header (2 products)
Fuel Hose Kit (131 products)
Fuel Injection Fuel Rail (3 products)
Fuel Injection Pressure Regulator (1 product)
Fuel Injection Throttle Body (6 products)
Fuel Injection Throttle Body Adapter (1 product)
Fuel Injector (1 product)
Fuel Injector Cushion Ring (1 product)
Manual Transmission Fluid (1 product)
Manual Transmission Gear Set (1 product)
Manual Transmission Mount (9 products)
Manual Transmission Shifter Assembly (1 product)
Manual Transmission Synchro Assembly (4 products)
Power Steering Line (2 products)
Skid Plate (1 product)
Turbocharger Oil Line (1 product)

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IAG Performance (364 products)

IAG Performance (364 products)

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Alternator Mount Kit (2 products)
Clutch Disc Intermediate Plate (1 products)
Clutch Pressure Plate and Disc Set (3 products)
Differential Gear Set (2 products)
Engine Block (1 products)
Engine Coolant Reservoir (2 products)
Engine Cylinder Head Gasket (2 products)
Engine Cylinder Head Plug (1 products)
Engine Cylinder Head Set (58 products)
Engine Cylinder Head Stud (2 products)
Engine Gasket Set (9 products)
Engine Intake Manifold Runner Control Valve (4 products)
Engine Long Block (29 products)
Engine Mount (6 products)
Engine Mount Kit (3 products)
Engine Oil Catch Can (2 products)
Engine Oil Change Kit (3 products)
Engine Oil Pan (4 products)
Engine Oil Pan Baffle (1 products)
Engine Oil Pan Kit (5 products)
Engine Oil Pump (4 products)
Engine Oil Separator (14 products)
Engine Oil Separator Hose (5 products)
Engine Oil Strainer (1 products)
Engine Oil Sump Windage Tray (2 products)
Engine Short Block (14 products)
Engine Short Ram Air Intake (2 products)
Engine Timing Belt (1 products)
Engine Timing Belt Component Kit (4 products)
Engine Timing Belt Kit with Water Pump (7 products)
Engine Timing Belt Tensioner (2 products)
Engine Valve Cover Gasket (2 products)
Exhaust Header (2 products)
Fuel Hose Kit (131 products)
Fuel Injection Fuel Rail (3 products)
Fuel Injection Pressure Regulator (1 products)
Fuel Injection Throttle Body (6 products)
Fuel Injection Throttle Body Adapter (1 products)
Fuel Injector (1 products)
Fuel Injector Cushion Ring (1 products)
Manual Transmission Fluid (1 products)
Manual Transmission Gear Set (1 products)
Manual Transmission Mount (9 products)
Manual Transmission Shifter Assembly (1 products)
Manual Transmission Synchro Assembly (4 products)
Power Steering Line (2 products)
Skid Plate (1 products)
Turbocharger Oil Line (1 products)

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IAG 950 CNC Ported Race S20 Cylinder Heads Package W/ GSC S2 Cams & Lifters For 02-05 WRX

IAG 950 CNC Ported Race S20 Cylinder Heads Package W/ GSC S2 Cams & Lifters For 02-05 WRX

Regular price $6,599.99 USD

Regular price ~~$6,299.99 USD~~ Sale price $6,599.99 USD
Unit price per
IAG 950 CNC Ported Race V25 Cylinder Heads Package (No Cams & Lifters) For 04-07 STI 04-05 FXT 05-09 LGT

IAG 950 CNC Ported Race V25 Cylinder Heads Package (No Cams & Lifters) For 04-07 STI 04-05 FXT 05-09 LGT

Regular price $4,899.99 USD

Regular price ~~$4,599.99 USD~~ Sale price $4,899.99 USD
Unit price per
IAG 950 CNC Ported Race V25 Cylinder Heads Package W/ GSC S2 Cams & Lifters For 04-07 STI 04-05 FXT 05-09 LGT

IAG 950 CNC Ported Race V25 Cylinder Heads Package W/ GSC S2 Cams & Lifters For 04-07 STI 04-05 FXT 05-09 LGT

Regular price $6,599.99 USD

Regular price ~~$6,299.99 USD~~ Sale price $6,599.99 USD
Unit price per
IAG 950 CNC Ported Race W25 Cylinder Heads Package (No Cams & Lifters) For 08-18 STI

IAG 950 CNC Ported Race W25 Cylinder Heads Package (No Cams & Lifters) For 08-18 STI

Regular price $4,899.99 USD

Regular price ~~$4,599.99 USD~~ Sale price $4,899.99 USD
Unit price per
IAG 950 CNC Ported Race W25 Cylinder Heads Package W/ GSC S2 Cam & Lifters For 08-18 STI

IAG 950 CNC Ported Race W25 Cylinder Heads Package W/ GSC S2 Cam & Lifters For 08-18 STI

Regular price $6,599.99 USD

Regular price ~~$6,299.99 USD~~ Sale price $6,599.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 06-14 WRX 06-13 FXT 07-09 LGT

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 06-14 WRX 06-13 FXT 07-09 LGT

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 06-14 WRX 06-13 FXT 07-09 LGT (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 06-14 WRX 06-13 FXT 07-09 LGT (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 18-19 STI Type RA 19+ STI

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 18-19 STI Type RA 19+ STI

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 18-19 STI Type RA 2019+ STI (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 18-19 STI Type RA 2019+ STI (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 02-05 USDM WRX 2.5L (HYBRID)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 02-05 USDM WRX 2.5L (HYBRID)

Regular price $18,399.99 USD

Regular price ~~$17,699.99 USD~~ Sale price $18,399.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts.for 02-05 USDM WRX 2.5L (HYBRID) (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts.for 02-05 USDM WRX 2.5L (HYBRID) (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

Regular price $18,399.99 USD

Regular price ~~$17,699.99 USD~~ Sale price $18,399.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 04-07 STI 04-05 FXT 05-06 LGT GSC S2 Camshafts

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 04-07 STI 04-05 FXT 05-06 LGT GSC S2 Camshafts

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 04-07 STI 04-05 FXT 05-06 LGT GSC S3 Camshafts. (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 04-07 STI 04-05 FXT 05-06 LGT GSC S3 Camshafts. (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 08-18 STI

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S2 Camshafts For 08-18 STI

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 08-18 STI (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

IAG 1150 Closed Deck Long Block Engine W/ IAG 1150 Heads / GSC S3 Camshafts For 08-18 STI (REQUIRES Standalone Engine Management May Not Be Compatible With AVCS)

Regular price $18,199.99 USD

Regular price ~~$17,499.99 USD~~ Sale price $18,199.99 USD
Unit price per
IAG 550 Long Block Engine W/ IAG 550 Heads For 2006-14 WRX 2006-13 FXT 2007-09 LGT

IAG 550 Long Block Engine W/ IAG 550 Heads For 2006-14 WRX 2006-13 FXT 2007-09 LGT

Regular price $9,799.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,799.99 USD
Unit price per
IAG 550 Long Block Engine W/ IAG 550 Heads For 2018+ STI RA 2019+ STI & S209

IAG 550 Long Block Engine W/ IAG 550 Heads For 2018+ STI RA 2019+ STI & S209

Regular price $9,799.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,799.99 USD
Unit price per
IAG 550 Long Block Engine W/ IAG 550 Heads For 2002-05 WRX

IAG 550 Long Block Engine W/ IAG 550 Heads For 2002-05 WRX

Regular price $9,999.99 USD

Regular price ~~$9,699.99 USD~~ Sale price $9,999.99 USD
Unit price per
IAG 550 Long Block Engine W/ IAG 550 Heads For 2004-07 STI 2004-05 FXT 2005-06 LGT

IAG 550 Long Block Engine W/ IAG 550 Heads For 2004-07 STI 2004-05 FXT 2005-06 LGT

Regular price $9,799.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,799.99 USD
Unit price per
IAG 550 Long Block Engine W/ IAG 550 Heads For 2008-18 STI

IAG 550 Long Block Engine W/ IAG 550 Heads For 2008-18 STI

Regular price $9,799.99 USD

Regular price ~~$9,499.99 USD~~ Sale price $9,799.99 USD
Unit price per
IAG 600 FA20 DIT Long Block Engine W/ IAG 600 Heads For 2015-21 Subaru WRX

IAG 600 FA20 DIT Long Block Engine W/ IAG 600 Heads For 2015-21 Subaru WRX

Regular price $15,999.99 USD

Regular price ~~$14,499.99 USD~~ Sale price $15,999.99 USD
Unit price per
IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2006-14 WRX 2006-13 FXT 2007-09 LGT

IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2006-14 WRX 2006-13 FXT 2007-09 LGT

Regular price $12,499.99 USD

Regular price ~~$11,799.99 USD~~ Sale price $12,499.99 USD
Unit price per
IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2018-2019 STI Type RA 2019+ STI

IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2018-2019 STI Type RA 2019+ STI

Regular price $12,499.99 USD

Regular price ~~$11,799.99 USD~~ Sale price $12,499.99 USD
Unit price per
IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2002-05 USDM WRX EJ25 2.5L (HYBRID)

IAG 750 Closed Deck Long Block Engine W/ IAG 750 Heads For 2002-05 USDM WRX EJ25 2.5L (HYBRID)

Regular price $12,699.99 USD

Regular price ~~$11,999.99 USD~~ Sale price $12,699.99 USD
Unit price per

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