2004 Subaru Impreza
Engine
SHOP 2004 SUBARU IMPREZA FEATURED PRODUCTS
Shop 2004 Subaru Impreza Engine Upgrades by Category

Exhausts
Exhaust Gaskets and Hardware
Exhaust Headers and Manifolds
Cat Back Exhaust System
Exhaust Heat Shields
Exhaust Hangers
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Air Induction
Turbo Inlet Hoses and Pipes
Cold Air Intakes
Intake System Gaskets
Air Intake and MAF Hoses
High Flow Replacement Panel Filters
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Shop 2004 Subaru Impreza featured products
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7 In Stock
21200AA072
Subaru OEM Thermostat - Subaru EJ Models (inc. 2004-2021 STI / 2002-2014 WRX)

4 In Stock
21236AA010
Subaru OEM Thermostat Gasket - Subaru EJ Models (inc. 2004-2021 STI / 2002-2014 WRX)

4B8296A-STD
ACL Rod Bearings Standard Size - Subaru EJ Models (inc. 2002-2014 WRX / 2004+ STI)

10 In Stock
312150
COBB Tuning Top Feed 1050X Fuel Injectors - 2007-2021 Subaru STI / 2002-2014 Subaru WRX

806786040G
Subaru OEM Crankshaft Rear Seal - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI)

4B8296H-STD
ACL Race Rod Bearings Standard Size - Subaru EJ Models (inc. 2002-2014 WRX / 2004-2021 STI)

1 In Stock
14024-4
Manley Economical H Beam Steel Connecting Rod - 2002-2005 Subaru WRX / 2004-2021 STI

1 In Stock
511301
COBB Tuning 15MM Blue Urethane Exhaust Hanger Standard Length - Subaru Models (inc. 1993-2007 Impreza / WRX / STI)

1 In Stock
VH091672
Koyo Aluminum Racing Radiator Manual Transmission - 2003-2007 Subaru WRX / STI

50 In Stock
020001
GrimmSpeed Exhaust Manifold to Head Gasket (Pair) - 2002-2023 Subaru WRX / 2004-2021 STI / 2013-2021 Scion FR-S / Subaru BRZ / Toyota 86

5M8309H-STD
ACL Race Main Bearings Standard Size - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)

40 In Stock
44022AA123
Subaru OEM Donut Gasket - Subaru EJ Models (inc. 2004-2021 STI / 2002-2014 WRX)

15 In Stock
078006
02-07 WRX / 04-21 STI GrimmSpeed Air Oil Separator

5 In Stock
12200AA430
Subaru OEM Forged Salt Bath Nitrated Crankshaft - 2006-2014 Subaru WRX / 2004-2021 STI

TS-SU-478-TGV
Torque Solution Phenolic Thermal Intake Spacers 19mm - 2002-2014 Subaru WRX / STI / 2005-2006 Baja / 2004-2013 Forester / 2005-2012 Legacy / 2005-2009 Outback / 2005-2006 Saab 9-2X

553
Company23 EJ DOHC Cam Seal Installer - Subaru EJ Models (inc. 2004-2021 STI / 2002-2014 WRX)

3 In Stock
11122AA340
Subaru OEM Oil Pan Seal - Subaru Models (inc. 2002-2014 WRX / 2004-2021 STI)

14135
Aeromotive Top Feed Fuel Rail System - 2002-2014 Subaru WRX / 2007-2021 STI

GRM.1099.1.SS
GrimmSpeed 2-Bolt Up-Pipe (Stainless Steel) - EJ25 Engines (Inc. 2004-2021 Subaru STI / 2006-2014 Subaru WRX)

50 In Stock
057001
GrimmSpeed Boost Control Solenoid - 2002-2005 Subaru WRX
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