Engine & Tuning

27 items. Fitment is general — check the listing for your exact car.

As an Amazon Associate we earn from qualifying purchases. Fitment notes are general — confirm on the listing before you buy.

Engine & Tuning

Cobb

Cobb Accessport V3 Subaru WRX

Handheld tuner with off-the-shelf maps.

GD
GR/GV
VA
WRX

Gen-specific

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Engine & Tuning

Cobb

Cobb Accessport V3 Subaru STI

Handheld tuner for STI models.

GD
GR/GV
VA
STI

Gen-specific

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Engine & Tuning

Grimmspeed

Grimmspeed Crankcase Breather Subaru

PCV/breather plumbing.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

NGK

NGK Spark Plugs Subaru WRX

OE-type and colder-heat-range plugs.

GD
GR/GV
VA
VB
WRX
STI

Check plug number for engine

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Engine & Tuning

Denso

Denso Iridium Spark Plugs Subaru

Iridium plug options.

GD
GR/GV
VA
VB
WRX
STI

Check plug number for engine

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Engine & Tuning

Killer B

Killer B Motorsport Oil Pickup

Oil pickup upgrade for EJ engines.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Killer B

Killer B Motorsport Oil Pan Baffle

Baffled pan for EJ oil control.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Injector Dynamics

ID1050x Fuel Injectors Subaru

Larger injectors for built cars; tune required.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Walbro

Walbro 255 Fuel Pump Subaru

In-tank pump upgrade.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Grimmspeed

Grimmspeed Fuel Pressure Regulator Subaru

Adjustable FPR.

GD
GR/GV
WRX
STI

EJ WRX/STI

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Engine & Tuning

Perrin

Perrin Pulley Kit Subaru

Lightweight pulley kit.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Gates

Gates Timing Belt Kit Subaru EJ

Timing belt kit for EJ engines.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

Mishimoto

Mishimoto Aluminum Radiator Subaru WRX

Aluminum replacement radiator.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific; check MT/CVT

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Engine & Tuning

Koyorad

Koyo Radiator Subaru WRX

Aluminum radiator.

GD
GR/GV
VA
WRX
STI

Gen-specific

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Engine & Tuning

Mishimoto

Mishimoto Oil Cooler Kit Subaru

Thermostatic oil cooler kit.

VA/VB WRX

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Engine & Tuning

Grimmspeed

Grimmspeed Radiator Shroud

Radiator shroud cover.

GR/GV
VA
WRX
STI

GR/GV & VA

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Engine & Tuning

Exedy

Exedy Stage 1 Organic Clutch Kit Subaru

Organic clutch kit.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific; MT only

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Engine & Tuning

ACT

ACT Heavy Duty Clutch Kit Subaru

Heavy-duty clutch kit.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific; MT only

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Engine & Tuning

SPEC

SPEC Stage 2 Clutch Kit Subaru

Stage 2 clutch kit.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific; MT only

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Engine & Tuning

Exedy

Exedy Lightweight Flywheel Subaru

Single-mass flywheel.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific; MT only

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Engine & Tuning

DeatschWerks

DeatschWerks DW300 Fuel Pump Subaru

In-tank fuel pump.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific

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Engine & Tuning

Injector Dynamics

Injector Dynamics ID1300x Fuel Injectors Subaru

Higher-flow injectors than the ID1050x.

GD
GR/GV
VA
WRX
STI

EJ WRX/STI

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Engine & Tuning

AEM

AEM 340lph Fuel Pump Subaru

In-tank high-flow fuel pump.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific

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Engine & Tuning

Cobb

COBB Flex Fuel Kit Subaru

Ethanol content sensor kit. Tune required.

GR/GV
VA
VB
WRX
STI

Gen-specific

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Engine & Tuning

CSF

CSF Aluminum Radiator Subaru WRX

All-aluminum radiator.

GD
GR/GV
VA
VB
WRX
STI

Gen-specific

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Engine & Tuning

Aisin

Aisin Timing Belt Kit Subaru EJ

Timing belt kit for EJ engines. Different supplier kit from the Gates listing.

GD
GR/GV
VA
WRX
STI

EJ engines

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Engine & Tuning

Aisin

Aisin Water Pump Subaru EJ

Water pump for EJ engines.

GD
GR/GV
VA
WRX
STI

EJ engines

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