Short Blocks, Long Blocks & Heads

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Subaru (OEM) Cylinder Head Casting (Left Hand), 2002-2005 WRX
Available For Order!

Subaru (OEM) Cylinder Head Casting (Left Hand), 2002-2005 WRX

$657.49

Subaru (OEM) Cylinder Head Casting (RH, Bare), 2006-2007 WRX
Available For Order!

Subaru (OEM) Cylinder Head Casting (RH, Bare), 2006-2007 WRX

$677.29

Subaru (OEM) Cylinder Head Casting (Right Hand), 2002-2005 WRX
Available For Order!

Subaru (OEM) Cylinder Head Casting (Right Hand), 2002-2005 WRX

$653.60

Subaru (OEM) EJ257 Engine Block (Case Half Castings Only), '04-'18 STi & '02-'14 WRX
Available For Order!

Subaru (OEM) EJ257 Engine Block (Case Half Castings Only), '04-'18 STi & '02-'14 WRX

$1,484.16

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (D25 Casting), '06-'14 WRX
Available For Order!

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (D25 Casting), '06-'14 WRX

$6,299.99

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi
Available For Order!

IAG Stage X Billet Short Block, 2002-2014 WRX & 2004-2021 STi

$17,599.99

IAG Stage 2 Cylinder Heads w/ Combustion Chamber Mod (No Cams/Buckets, S20 Castings), '02-'05 WRX
Available For Order!

IAG Stage 2 Cylinder Heads w/ Combustion Chamber Mod (No Cams/Buckets, S20 Castings), '02-'05 WRX

$3,699.99

IAG Stage 2 Cylinder Heads w/ GSC S2 Cams & Combustion Chamber Mod (S20 Casting), '02-'05 WRX
Available For Order!

IAG Stage 2 Cylinder Heads w/ GSC S2 Cams & Combustion Chamber Mod (S20 Casting), '02-'05 WRX

$5,369.99

IAG Stage 3 Cylinder Heads (No Cams/Buckets, S20 Castings), '02-'05 WRX
Available For Order!

IAG Stage 3 Cylinder Heads (No Cams/Buckets, S20 Castings), '02-'05 WRX

$3,629.99

IAG Stage 3 Cylinder Heads w/ Combustion Chamber Mod (No Cams/Buckets, S20 Castings), '02-'05 WRX
Available For Order!

IAG Stage 3 Cylinder Heads w/ Combustion Chamber Mod (No Cams/Buckets, S20 Castings), '02-'05 WRX

$3,829.99

IAG Stage 3 Cylinder Heads w/ GSC S2 Cams & Combustion Chamber Mod (S20 Casting), '02-'05 WRX
Available For Order!

IAG Stage 3 Cylinder Heads w/ GSC S2 Cams & Combustion Chamber Mod (S20 Casting), '02-'05 WRX

$5,699.99

IAG Stage 3 Cylinder Heads w/ GSC S2 Cams (S20 Casting), 2002-2005 WRX
Available For Order!

IAG Stage 3 Cylinder Heads w/ GSC S2 Cams (S20 Casting), 2002-2005 WRX

$5,499.99

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (S20 Casting), '02-'05 WRX
Available For Order!

IAG Stage 4 Cylinder Heads w/ +1mm Valves & GSC S3 Cams (S20 Casting), '02-'05 WRX

$5,999.99

IAG 750 EJ20 Closed Deck Case (No Bore/Hone, 11mm HSM), 2002-2005 WRX
Available For Order!

IAG 750 EJ20 Closed Deck Case (No Bore/Hone, 11mm HSM), 2002-2005 WRX

$2,199.99

IAG 750 EJ20 Closed Deck Case (w/ Bore/Hone, 11mm HSM), 2002-2005 WRX
Available For Order!

IAG 750 EJ20 Closed Deck Case (w/ Bore/Hone, 11mm HSM), 2002-2005 WRX

$2,549.99

IAG 950 EJ20 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '02-'05 WRX
Available For Order!

IAG 950 EJ20 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '02-'05 WRX

$2,999.99

IAG 950 EJ20 Closed Deck Case (w/ Bore/Hone / 14mm HSM, Fire-Lock), '02-'05 WRX
Available For Order!

IAG 950 EJ20 Closed Deck Case (w/ Bore/Hone / 14mm HSM, Fire-Lock), '02-'05 WRX

$3,349.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX

$5,999.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod & GSC S2 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod & GSC S2 Cams & Lifters, '02-'05 WRX

$7,699.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod & GSC S3 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ Combustion Mod & GSC S3 Cams & Lifters, '02-'05 WRX

$7,699.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads (No Cams / Lifters), '02-'05 WRX

$5,799.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ GSC S2 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ GSC S2 Cams & Lifters, '02-'05 WRX

$7,499.99

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ GSC S3 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 1150 CNC Ported Drag S20 Cylinder Heads w/ GSC S3 Cams & Lifters, '02-'05 WRX

$7,499.99

IAG 550 Street S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 550 Street S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX

$3,199.99

IAG 550 Street S20 Cylinder Heads w/ Combustion Mod & GSC S1 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 550 Street S20 Cylinder Heads w/ Combustion Mod & GSC S1 Cams & Lifters, '02-'05 WRX

$4,899.99

IAG 550 Street S20 Cylinder Heads (No Cams / Lifters), 2002-2005 WRX
Available For Order!

IAG 550 Street S20 Cylinder Heads (No Cams / Lifters), 2002-2005 WRX

$2,999.99

IAG 550 Street S20 Cylinder Heads w/ GSC S1 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 550 Street S20 Cylinder Heads w/ GSC S1 Cams & Lifters, '02-'05 WRX

$4,699.99

IAG 750 CNC Pocket Ported S20 Competition Cylinder Heads (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 750 CNC Pocket Ported S20 Competition Cylinder Heads (No Cams / Lifters), '02-'05 WRX

$3,799.99

IAG 750 CNC Pocket Ported S20 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 750 CNC Pocket Ported S20 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '02-'05 WRX

$5,699.99

IAG 950 CNC Ported Race S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 950 CNC Ported Race S20 Cylinder Heads w/ Combustion Mod (No Cams / Lifters), '02-'05 WRX

$4,799.99

IAG 950 CNC Ported Race S20 Cylinder Heads w/ Combustion Mod & GSC S2 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 950 CNC Ported Race S20 Cylinder Heads w/ Combustion Mod & GSC S2 Cams & Lifters, '02-'05 WRX

$6,499.99

IAG 950 CNC Ported Race S20 Cylinder Heads (No Cams / Lifters), '02-'05 WRX
Available For Order!

IAG 950 CNC Ported Race S20 Cylinder Heads (No Cams / Lifters), '02-'05 WRX

$4,599.99

IAG 950 CNC Ported Race S20 Cylinder Heads w/ GSC S2 Cams & Lifters, '02-'05 WRX
Available For Order!

IAG 950 CNC Ported Race S20 Cylinder Heads w/ GSC S2 Cams & Lifters, '02-'05 WRX

$6,299.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '02-'05 WRX
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S2 Camshafts, '02-'05 WRX

$17,699.99

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '02-'05 WRX
Available For Order!

IAG 1150 Closed Deck Long Block Engine w/ IAG 1150 Heads / GSC S3 Camshafts, '02-'05 WRX

$17,699.99

IAG 550 Long Block Engine w/ IAG 550 Heads, 2002-2005 WRX
Available For Order!

IAG 550 Long Block Engine w/ IAG 550 Heads, 2002-2005 WRX

$9,699.99

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, '02-'05 WRX 2.5L (HYBRID)
Available For Order!

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, '02-'05 WRX 2.5L (HYBRID)

$11,999.99

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2002-2005 WRX
Available For Order!

IAG 750 Closed Deck Long Block Engine w/ IAG 750 Heads, 2002-2005 WRX

$11,799.99

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, '02-'05 WRX 2.5L (HYBRID)
Available For Order!

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, '02-'05 WRX 2.5L (HYBRID)

$13,199.99

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2002-2005 WRX
Available For Order!

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads, 2002-2005 WRX

$12,999.99

IAG 750 EJ20 Closed Deck Short Block - 750 BHP, 2002-2005 WRX
Available For Order!

IAG 750 EJ20 Closed Deck Short Block - 750 BHP, 2002-2005 WRX

$4,999.99

IAG 950 EJ20 Closed Deck Short Block - 950 BHP, 2002-2005 WRX
Available For Order!

IAG 950 EJ20 Closed Deck Short Block - 950 BHP, 2002-2005 WRX

$5,999.99

IAG 750 EJ25 Closed Deck Short Block - 750BHP, '02-'05 WRX w/ EJ20 Heads
Available For Order!

IAG 750 EJ25 Closed Deck Short Block - 750BHP, '02-'05 WRX w/ EJ20 Heads

$5,099.99

IAG 950 EJ25 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX
Available For Order!

IAG 950 EJ25 Closed Deck Case (No Bore/Hone / 14mm HSM, Fire-Lock), '04-'21 STi & '06-'14 WRX

$2,649.99

IAG 1150 CNC Ported Drag D25 Cylinder Heads w/ GSC S3 Cams & Lifters, '06-'14 WRX
Available For Order!

IAG 1150 CNC Ported Drag D25 Cylinder Heads w/ GSC S3 Cams & Lifters, '06-'14 WRX

$7,499.99

IAG 750 CNC Pocket Ported D25 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '06-'14 WRX
Available For Order!

IAG 750 CNC Pocket Ported D25 Competition Cylinder Heads w/ GSC S1 Cams & Lifters, '06-'14 WRX

$5,699.99

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (No Cams/Buckets, D25 Casting), '06-'14 WRX
Available For Order!

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (No Cams/Buckets, D25 Casting), '06-'14 WRX

$3,629.99

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (D25 Casting), '06-'14 WRX
Available For Order!

IAG Stage 3 Cylinder Heads w/ +1mm GSC Valves (D25 Casting), '06-'14 WRX

$5,499.99

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