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IAG 600 Street Cylinder Heads Package (600BHP) - Subaru WRX 2015-2021

$3,199.99
IAG-ENG-H600E
All Best selling products Commerceinstruments Best Selling Products Cylinder Heads Engine Build Components Hardware IAG Performance New products Valve Springs & Retainers Valves
IAG 600 STREET CYLINDER HEADS PACKAGE FOR 2015-2021 SUBARU WRX ENTRY-LEVEL STOCK REPLACEMENT HEADS The IAG 600 Cylinder Heads are designed to function as...

IAG 750 CNC Pocket Ported Competition Cylinder Heads Package (750BHP) - Subaru WRX 2002-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$4,249.99
IAG-ENG-H750SE
All Best selling products Commerceinstruments Best Selling Products Cylinder Heads Engine Build Components Hardware IAG Performance New products Valve Springs & Retainers Valves
IAG 750 CNC POCKET PORTED COMPETITION CYLINDER HEADS PACKAGE FOR 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT BUILT FOR THE WEEKEND RACER The...

IAG 750 EJ20 Closed Deck Case Halves (11mm H.S.M.) - Subaru WRX 2002-2005

$2,699.99
IAG-ENG-C755
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 750 EJ20 CLOSED DECK CASE PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case halves, or...

IAG 750 EJ20 Subaru Closed Deck Short Block (750BHP) - Subaru WRX 2002-2005

$5,749.99
IAG-ENG-S755
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 750 EJ20 2.0L SUBARU SHORT BLOCK THE PROBLEM SOLVER The IAG 750 Short Block is designed to solve the majority of common problems...

IAG 750 EJ25 Closed Deck Case Halves (11mm H.S.M.) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$2,749.99
IAG-ENG-C750
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 750 EJ25 CLOSED DECK CASE PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case halves, or...

IAG 750 EJ25 Subaru Closed Deck Short Block (750BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$5,499.99
IAG-ENG-S750
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 750 EJ25 2.5L SUBARU SHORT BLOCK Using EJ20 Heads? View the IAG750 International Hybrid Block HERE (Built with Hybrid Pistons) THE PROBLEM SOLVER...

IAG 750 International Hybrid EJ25 Subaru Closed Deck Short Block (750BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$5,599.99
IAG-ENG-S750IH
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 750 International Hybrid EJ25 2.5L SUBARU SHORT BLOCK (Built with Hybrid Pistons for EJ20 Heads) Using EJ20 Heads? View the IAG750 International Hybrid...

IAG 750 Long Block Engine w/ IAG 750 Heads (750BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$12,749.99
IAG-ENG-L755S
All Best selling products Commerceinstruments Best Selling Products Hardware IAG Performance Longblocks New products
IAG 750 LONG BLOCK ENGINE WITH IAG 750 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Performance...

IAG 800 CNC Pocket Ported Competition Cylinder Heads Package (800BHP) - Subaru WRX 2015-2021

$4,249.99
IAG-ENG-H800E
All Best selling products Commerceinstruments Best Selling Products Cylinder Heads Engine Build Components Hardware IAG Performance New products Valve Springs & Retainers Valves
IAG 800 POCKET PORTED COMPETITION CYLINDER HEADS PACKAGE FOR 2015-2021 SUBARU WRX DESIGNED WITH THE WEEKEND RACER IN MIND The IAG 800 CNC Pocket...

IAG 800 FA20 Closed Deck Case Halves - Subaru BRZ / Scion FR-S / Toyota 86 2013-2020

$3,099.99
IAG-ENG-C886
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 800 FA20 CLOSED DECK CASE FOR BRZ/FRS/GT86 PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case...

IAG 800 FA20 DIT Closed Deck Case Halves - Subaru WRX 2015-2021

$3,099.99
IAG-ENG-C800
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 800 FA20DIT CLOSED DECK CASE FOR 2015-2021 SUBARU WRX PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM...

IAG 800 FA20 DIT Long Block Engine w/ IAG 800 Heads (800BHP) - Subaru WRX 2015-2021

$18,999.99
IAG-ENG-L800
All Best selling products Commerceinstruments Best Selling Products Hardware IAG Performance Longblocks New products
IAG 800 FA20F DIT TIMED LONG BLOCKFOR 2015-2021 WRX A "DROP-IN" SOLUTION The IAG Performance Hand-Built 800 Subaru FA20F (DIT) is a great choice...

IAG 800 FA20 DIT Subaru Closed Deck Short Block (800BHP) - Subaru WRX 2015-2021

$6,499.99
IAG-ENG-S800
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 800 FA20 DIT 2.0L SUBARU SHORT BLOCK GET MORE OUT OF YOUR FA20 WRX The IAG 800 Short Block is designed for modified...

IAG 800 FA20 Subaru Closed Deck Short Block (10.5:1 Compression Ratio; 800BHP) - Subaru BRZ / Scion FR-S / Toyota 86 2013-2020

$6,499.99
IAG-ENG-S886L
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 10.5:1 LOW COMPRESSION GET MORE OUT OF YOUR BRZ/FT86 The IAG 800 Short Block is...

IAG 800 FA20 Subaru Closed Deck Short Block (12.5:1 Compression Ratio; 800BHP) - Subaru BRZ / Scion FR-S / Toyota 86 2013-2020

$6,499.99
IAG-ENG-S886H
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 800 FA20 FT86/BRZ 2.0L SUBARU SHORT BLOCK WITH 12.5:1 STANDARD COMPRESSION GET MORE OUT OF YOUR BRZ/FT86 The IAG 800 Short Block is...

IAG 93.5mm Fire-Lock 2.0L Subaru Head Gaskets for 14mm Head Studs (Pair w/ Fire-Lock Rings) - Subaru WRX 2002-2005

$329.99
IAG-ENG-1745
All Best selling products Commerceinstruments Best Selling Products Head Gaskets IAG Performance New products
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...

IAG 950 Closed Deck Long Block Engine w/ IAG 950 Heads (950BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$14,299.99
IAG-ENG-L950SC
All Best selling products Commerceinstruments Best Selling Products Hardware IAG Performance Longblocks New products
IAG 950 LONG BLOCK ENGINE WITH IAG 950 HEADS FOR 02-14 WRX, 04-21 STI, 04-13 FXT, 05-09 LGT A "DROP-IN" SOLUTION The IAG Performance...

IAG 950 CNC Ported Drag Cylinder Heads Package (1150BHP) - Subaru WRX 2002-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$6,299.99
IAG-ENG-H115SE
All Best selling products Commerceinstruments Best Selling Products Cylinder Heads Engine Build Components Hardware IAG Performance New products Valve Springs & Retainers Valves
IAG 1150 CNC PORTED DRAG CYLINDER HEADS PACKAGE FOR 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT MAXIMUM POWER FOR DRAG RACING The IAG...

IAG 950 CNC Ported Race Cylinder Heads Package (950BHP) - Subaru WRX 2002-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$4,999.99
IAG-ENG-H950SE
All Best selling products Commerceinstruments Best Selling Products Cylinder Heads Engine Build Components Hardware IAG Performance New products Valve Springs & Retainers Valves
IAG 950 CNC PORTED RACE CYLINDER HEADS PACKAGE FOR 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT BUILT WITH RACING IN MIND The IAG...

IAG 950 Destroked 2.35L Closed Deck Long Block Engine w/ IAG 950 Heads (950BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$14,299.99
IAG-ENG-L953SC
All Best selling products Commerceinstruments Best Selling Products Hardware IAG Performance Longblocks New products
IAG 950 2.35L DESTROKED LONG BLOCK ENGINE W/ IAG 950 HEADS DROP IN AND DRIVE The IAG Performance hand-built Subaru 950 2.35L Destroked Long...

IAG 950 EJ20 Closed Deck Case Halves (11mm H.S.M.) - Subaru WRX 2002-2005

$3,499.99
IAG-ENG-C955
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 950 EJ20 CLOSED DECK CASE PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case halves, or...

IAG 950 EJ25 Closed Deck Case Halves (14mm H.S.M.; Fire-Lock) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$3,099.99
IAG-ENG-C950
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 950 EJ25 CLOSED DECK CASE PLANNING TO BUILD YOUR OWN ENGINE? START HERE It's no secret that the OEM Subaru case halves, or...

IAG 950 EJ25 Subaru Closed Deck Short Block (950BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$6,499.99
IAG-ENG-S950
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 950 EJ25 2.5L SUBARU SHORT BLOCK Note: Installation of this shortblock requires IAG Fire-Lock Head Gasket Set - 1 Pair PN# IAG-ENG-1741 and...

IAG 950 EJ25 Subaru Destroked 2.35L Closed Deck Short Block (950BHP) - Subaru WRX 2006-2014 / STi 2004-2021 / LGT 2005-2009 / FXT 2004-2013

$6,999.99
IAG-ENG-S953
All Best selling products Commerceinstruments Best Selling Products Engine Build Components Hardware IAG Performance New products Shortblocks
IAG 950 EJ25 2.35L DESTROKED CLOSED DECK SHORT BLOCK FOR WRX, STI, LGT, FXT - 950 BHP Note: Installation of this shortblock requires IAG...

IAG Air / Oil Separator (AOS) - Subaru Outback XT 2020-2025 / Wilderness 2022-2025

$499.99
IAG-ENG-7191BK
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products IAG Performance New products Oil System
IAG AIR / OIL SEPARATOR (AOS) FOR 2020-2025 OUTBACK XT, 2022-2025 OUTBACK WILDERNESS SAFEGUARD YOUR ENGINE The IAG Air / Oil Separator (AOS) is...

IAG Air / Oil Separator (AOS) - Subaru WRX 2002-2007 / STi 2004-2007 / FXT 2004-2008

$499.99
IAG-ENG-7185BK
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products IAG Performance New products Oil System
IAG AIR / OIL SEPARATOR (AOS) FITS 02-07 SUBARU IMPREZA WRX, 04-07 STI & 04-08 FXT PROTECTION FOR YOUR ENGINE The IAG Air /...

IAG Air / Oil Separator (AOS) - Subaru WRX 2008-2014 / STi 2008-2021 / FXT 2009-2013 / LGT & OBXT 2005-2009

$499.99
IAG-ENG-7186BK
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products IAG Performance New products Oil System
IAG AIR / OIL SEPARATOR (AOS) FOR 08-14 SUBARU WRX, 08-21 STI, 09-13 FXT, 05-09 LGT & OBXT   SAFEGUARD YOUR SUBARU The IAG...

IAG Air / Oil Separator (AOS) - Subaru WRX 2015-2021 / FXT 2014-2018

$499.99
IAG-ENG-7187BK
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products IAG Performance New products Oil System
IAG AIR / OIL SEPARATOR (AOS) FITS 2015-21 SUBARU WRX, 14-18 FXT PROTECT YOUR ENGINE The IAG Air / Oil Separator (AOS) is a...

IAG Air / Oil Separator (AOS) - Subaru WRX 2022-2025

$499.99
IAG-ENG-7188BK
Air Oil Separators All Best selling products Commerceinstruments Best Selling Products IAG Performance New products Oil System
IAG AIR / OIL SEPARATOR (AOS) FITS 2022-24 SUBARU WRX SAFEGUARD YOUR ENGINE The IAG Air / Oil Separator (AOS) is a smart move...

IAG Alternator Cover - Subaru WRX 2006-2014 / STi 2004-2021

$99.99
IAG-ACC-5336BK
All Belt Covers Best selling products Commerceinstruments Best Selling Products Engine Covers Engine Dress Up IAG Performance New products
IAG ALTERNATOR COVER FOR 2006-14 WRX & 04-21 STI THE IAG ALTERNATOR COVER The IAG Alternator Cover replaces the dull factory plastic with a...
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All products sold by Patterson Performance Parts, LLC are intended for off-road and/or competition use only. By purchasing aftermarket products from us, having us install the products, or both, the customer takes full responsibility for any use, and/or misuse of the product; and agrees that Patterson Performance Parts holds no responsibility for any consequences, legal, or other, of such use and/or misuse.
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