Looking for aftermarket parts to modify or upgrade your 2004 Subaru Impreza with engine components? At Tunersports.com we carry a huge selection of the top name brand performance engine component parts and accessories for your Impreza.
Whether you have a 2004 Subaru Impreza in Outback to WRX STI trim we have you covered. With engine components from bearings to valves we have 464 Impreza engine component mods available. All parts have free shipping to the Continental US 48 States.
 IN STOCK - LOW Cometic Gasket Head Gaskets C4319-092Cometic Nissan RB26DETT 86mm Bore .092in MLS Cylinder Head Gasket $216.08
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 IN STOCK Radium Engineering Catch Can Kits 20-0608-FLRadium 02-21 Subaru EJ-Series Fluid Lock Turbo Dual Catch Can Kit $398.95
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 IN STOCK - LOW Cometic Gasket Gasket Kits - No HG PRO2024-NHGCometic Street Pro 04-06 Subaru EJ257 Gasket Kit Without Head Gasket $170.68
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 IN STOCK - LOW Wiseco Piston Sets - 4 Cyl K598M9975Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.75 Piston Shelf Stock Kit $732.99
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 IN STOCK - LOW CP Pistons Piston Sets -4 Cyl SC7422-4CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.75mm) - Size (0.25mm) - CR (8.2) $885.15
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 IN STOCK - LOW CP Pistons Piston Sets -4 Cyl SC7416-4CP Piston & Ring Set for Subaru EJ25 WRX STi - Bore (99.75mm) - Size (+0.25mm) - CR (10) - Set of 4 |
 IN STOCK - LOW CP Pistons Piston Sets -4 Cyl SC7423-4CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100.5mm) - Size (+1.0mm) - CR (8.2) Set of 4 $885.15
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 IN STOCK CP Pistons Piston Sets -4 Cyl SC7421-4CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2) $885.15
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 IN STOCK - LOW CP Pistons Piston Sets -4 Cyl SC7426-4CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (99.75mm) - Size (+0.25mm) - CR (9.0) $885.15
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 IN STOCK King Engine Bearings Performance Main Bearings MB5382XPGKing Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) (Size STD) Performance Main Bearing Set $88.63
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 IN STOCK ACL Race Series Main Bearings 5M8309H-STDACL Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) Standard Size High Performance Main Bearing Se $96.07
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 IN STOCK King Engine Bearings Main Bearings MB5382XPGSTDXKing Subaru EJ20/EJ22/EJ25 (For Thrust in #5 Position) (Size STDX) Tri-Metal Perf Main Bearing Set $91.96
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 IN STOCK Fluidampr Dampers - Import 531101Fluidampr Subaru EJ Series Steel Internally Balanced Damper $473.45
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 IN STOCK GSC Power Division Valve Spring Kits 5043GSC P-D EJ257 Beehive Valve Springs w/ Titanium Retainer Valvetrain Kit (Use factory spring seats) $399.92
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 IN STOCK King Engine Bearings Performance Rod Bearings CR4125XPGCKing Subaru EJ20/EJ22/EJ25 (Suites 52mm Journal Size) (Size STD) Tri-Metal Coated Rod Bearing Set $91.74
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 IN STOCK Cometic Gasket Head Gaskets C4574-056Cometic 03+ Subaru EJ255/EJ257 101mm .056 inch MLS-5 Head Gasket $86.22
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 IN STOCK ACL Rod Bearings 4B8296HXC-STDACL Subaru EJ20/EJ22/EJ25 (52 Journal Size) Std Size High Perf w/ Extra Oil Clearance - CT-1 Coated $81.51
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