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Vendor:Brian CrowerBrian Crower ARP2000 Cam Gear Bolt (AVCS) for Subaru EJ25 (1)
Only 5 leftRegular price $38.00Sale price $38.00 Regular priceUnit price per -
Vendor:SubaruSubaru Cam Sprocket Bolt For 2017-25 WRX, 16-25 BRZ
Regular price $3.10Sale price $3.10 Regular priceUnit price per -
Vendor:IAG PerformanceIAG Black AVCS Camshaft Sensor Plugs (Pair) For 2002-05 Subaru WRX w/ USDM AVCS Heads
Regular price $69.99Sale price $69.99 Regular priceUnit price per -
Vendor:Brian CrowerBrian Crower Adjustable Cam Gears for Subaru EJ205/EJ257 (Set of 2) - Exhaust Side Only - BC8860-EX
Only 3 leftRegular price $464.00Sale price $464.00 Regular priceUnit price per -
Sold OutVendor:Brian CrowerBrian Crower Adjustable Cam Gears for Subaru EJ205/EJ257 (Set of 4) - BC8860
Regular price $844.00Sale price $844.00 Regular priceUnit price per -
Vendor:SubaruFHI Right Side Exhaust Cam Sprocket Fits 2008-21 Subaru STI
Regular price $334.12Sale price $334.12 Regular priceUnit price per -
Vendor:SubaruSubaru Passenger Side AVCS Intake Cam Gear For 2006-14 WRX, 2004-21 STI, 2004-13 FXT & 2005-12 LGT
Regular price $284.17Sale price $284.17 Regular priceUnit price per -
Vendor:SubaruSubaru Left Side Exhaust Cam Sprocket For 2008-21 STI, 10-12 LGT
Regular price $333.05Sale price $333.05 Regular priceUnit price per -
Vendor:SubaruSubaru Drivers Side AVCS Intake Cam Gear For 2006-14 WRX, 2004-21 STI, 2004-13 FXT & 2005-12 LGT
Regular price $283.08Sale price $283.08 Regular priceUnit price per -
Vendor:SubaruSubaru Driver Side Exhaust Cam Gear Sprocket for 2002-14 WRX, 04-07 STI, 05-09 LGT, 04-08 FXT
Regular price $124.58Sale price $124.58 Regular priceUnit price per -
Vendor:SubaruSubaru Passenger Side Exhaust Cam Gear Sprocket for 2002-14 WRX, 04-07 STI, 05-09 LGT, 04-08 FXT
Regular price $124.60Sale price $124.60 Regular priceUnit price per -
Vendor:SubaruSubaru Intake Cam Gear Sprocket for 2002-05 WRX (Passenger Side)
Regular price $135.17Sale price $135.17 Regular priceUnit price per -
Vendor:SubaruLeft Side Exhaust Cam Sprocket For 2015-21 Subaru WRX FA20 DIT
Regular price $308.22Sale price $308.22 Regular priceUnit price per -
Vendor:SubaruRight Side Intake Cam Sprocket For 2015-21 Subaru WRX FA20 DIT, 17-20 BRZ
Regular price $308.22Sale price $308.22 Regular priceUnit price per -
Vendor:SubaruLeft Side Intake Cam Sprocket For 2015-21 Subaru WRX FA20 DIT & 17-20 BRZ MT
Regular price $308.22Sale price $308.22 Regular priceUnit price per -
Vendor:SubaruRight Side Exhaust Cam Sprocket For 2015-21 Subaru WRX FA20 DIT
Regular price $308.22Sale price $308.22 Regular priceUnit price per -
Vendor:IAG PerformanceIAG Short Block Copper O-Ring Wire & Install Tool Kit
Only 9 leftRegular price $39.99Sale price $39.99 Regular priceUnit price per -
Vendor:IAG PerformanceIAG Threaded Plugs for FA Cylinder Heads (Set of 8)
Regular price $129.99Sale price $129.99 Regular priceUnit price per -
Vendor:Kelford CamsKelford 35mm DLC Valve Adjustment Bucket | 4.70mm-5.18mm (SOLD INDIVIDUALLY) fits 02-14 WRX, 04-21 STI, 05-09 LGT, 04-13 FXT
Regular price $32.30Sale price $32.30 Regular priceUnit price per -
Vendor:IAG PerformanceIAG Single Valve Spring and Titanium Retainer Set For Subaru EJ Engine
Only 15 leftRegular price $329.99Sale price $329.99 Regular priceUnit price per -
Vendor:GSC Power DivisionGSC Subaru EJ Valve Spring Seats OEM Style Replacement
Regular price $22.44Sale price $22.44 Regular priceUnit price per -
Vendor:IAG PerformanceIAG Beehive Valve Spring and Titanium Retainer Set for Subaru EJ Engine
Only 9 leftRegular price $479.99Sale price $479.99 Regular priceUnit price per -
Vendor:Manley PerformanceManley Beehive Valve Spring & Titanium Retainer Set For 2002-14 Subaru WRX, 2004-21 STI, 05-12 LGT, 04-13 FXT
Regular price $532.99Sale price $532.99 Regular priceUnit price per -
Up to $18.17 OFFVendor:Manley PerformanceManley Beehive Valve Spring & Titanium Retainer Set For 2002-14 Subaru WRX, 2004-21 STI, 05-12 LGT, 04-13 FXT - 26180
Only 4 leftRegular price $345.16Sale price $345.16 Regular priceUnit price per$363.33 -
Up to $6.94 OFFVendor:Manley PerformanceManley Subaru WRX/STI 16pc Valve Springs (1.050/.755) (for use with 23180-16 Retainers) - 22180-16
Only 8 leftRegular price $131.89Sale price $131.89 Regular priceUnit price per$138.83 -
Vendor:GSC Power DivisionGSC P-D Subaru EJ257 Beehive Valve Spring & Ti Retainer Kit (Use w/OE Spring Seats) - 5043
Only 20 leftRegular price $399.92Sale price $399.92 Regular priceUnit price per -
Vendor:GSC Power DivisionGSC Beehive Valve Springs and Titanium Retainer Set for Subaru EJ Engines
Regular price $399.92Sale price $399.92 Regular priceUnit price per -
Up to $49.85 OFFVendor:GSC Power DivisionGSC P-D Subaru EJ Turbo Series Valve Spring Kit (set of 16) - 5743
Regular price $282.46Sale price $282.46 Regular priceUnit price per$332.31 -
Up to $54 OFFVendor:GSC Power DivisionGSC P-D 12+ Subaru BRZ / Scion FR-S Single Spring, Chromoly Seat and Titanium Retainer Kit - 5756
Only 19 leftRegular price $306.01Sale price $306.01 Regular priceUnit price per$360.01 -
Up to $79.01 OFFVendor:GSC Power DivisionGSC Power-Division Beehive Valve Spring Kit For 2015-21 Subaru WRX, 13-17 BRZ / FR-S - 5056
Only 10 leftRegular price $447.72Sale price $447.72 Regular priceUnit price per$526.73 -
Vendor:Kelford CamsKelford Cams Dual Valve Springs & Titanium Retainers for 2015-25 Subaru WRX FA20F/FA24F
Regular price $444.60Sale price $444.60 Regular priceUnit price per -
Vendor:Kelford CamsKelford Cams Subaru High Performance Valve Spring Set (Single Spring Style)
Regular price $209.00Sale price $209.00 Regular priceUnit price per -
Vendor:Kelford CamsKelford Cams Subaru Beehive Valve Spring and Ti Retainer Set
Regular price $494.00Sale price $494.00 Regular priceUnit price per -
Vendor:Brian CrowerBrian Crower Subaru EJ Series / Toyota 3SGTE/GE Single Spring & Steel Retainer Kit - BC0600S
Only 4 leftRegular price $195.00Sale price $195.00 Regular priceUnit price per -
Vendor:Brian CrowerBrian Crower Subaru EJ205-WRX/EJ257-STi Single Spring & Titanium Retainer Kit - BC0600
Only 12 leftRegular price $300.00Sale price $300.00 Regular priceUnit price per -
Vendor:Brian CrowerBrian Crower Subaru EJ205/EJ207/EJ257 Series Dual Spring/Titanium Retainer/Spring Seal Kit - BC0610
Only 1 leftRegular price $542.00Sale price $542.00 Regular priceUnit price per
Cylinder Heads & Parts
Shop Subaru cylinder heads and valvetrain components at IAG Performance for 2002–2023 Subaru WRX, STI, Legacy GT, Forester XT, and BRZ models. Our selection includes high-quality Subaru cylinder head parts designed for EJ20, EJ25, and FA20 engines, whether you're performing routine maintenance, upgrading valvetrain components, or building a high-performance Subaru engine. Browse a wide range of Subaru cylinder head upgrades and replacement parts including ported head packages, camshafts, cam sprockets, valves, valve springs, retainers, valve guides, gaskets, seals, timing chains, head hardware, and other essential valvetrain components. These parts are engineered to support everything from reliable daily driving to high-horsepower Subaru WRX and STI engine builds. IAG Performance carries cylinder head parts and valvetrain components from many of the most trusted names in the Subaru performance community. Featured brands include AEM, Brian Crower, GSC Power Division, IAG Performance, JE Pro Seal, Kelford Cams, Killer B Motorsport, Manley Performance, Subaru OEM, Turnin Concepts, and more. Whether you're refreshing your Subaru cylinder heads or building a fully upgraded EJ or FA engine, IAG Performance offers the parts and expertise to support your Subaru WRX, STI, Legacy GT, Forester XT, or BRZ build.