Looking for aftermarket parts to modify or upgrade your Subaru WRX STI with engine components? At Tunersports.com we carry a huge selection of the top name brand performance engine component parts and accessories for your WRX STI.
Whether you have a 2015 or 2021 Subaru WRX STI in Base to Type RA trim we have you covered. With engine components from bearings to wiring harnesses we have 146 WRX STI engine component mods available. All parts have free shipping to the Continental US 48 States.
 $55.53
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 IN STOCK - LOW Cometic Gasket Head Gaskets C14181-036Cometic 18-21 Subaru WRX STI 101.3mm Bore .036in MLS Cylinder Head Gasket $101.00
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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 SPL Parts Eccentric Lockout Kits SPL EL FRSSPL Parts 2013+ Subaru BRZ/Toyota 86 / 2015+ Subaru WRX/STI Eccentric Lockout Kit $75.63
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 IN STOCK - LOW Victor Reinz Cylinder Head Bolts GS33419MAHLE Original Saab 9-2X 06 Cylinder Head Bolts $67.74
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 IN STOCK Victor Reinz Head Gaskets 55017MAHLE Original 06-12 Subaru EJ253/EJ255/EJ257 Cylinder Head Gasket $60.04
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 IN STOCK - LOW Torque Solution Mount Combo Kits TS-SU-123.2-PLTorque Solution Engine / Trans / Pitch Mount Kit w/ Mount Plates: Subaru WRX 02-14 / STI 04+ $603.77
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 IN STOCK Torque Solution Mount Combo Kits TS-SU-123SB-PLTorque Solution Engine & Transmission Mount Kit w/ Mount Plates 02-14 Subaru WRX / 04+ Subaru STI $405.77
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 IN STOCK Torque Solution Mount Combo Kits TS-SU-123SBTorque Solution Engine / Transmission/Pitch Mount 02-14 Subaru WRX / STI $345.88
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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 Perrin Performance Engine Mount Kit PSP-DRV-101BKPerrin 02-11 Subaru Impreza / 02-12 WRX / 04-12 STi Pitch Stop Mount - Black $99.45
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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 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 GSC Power Division Valve Spring Sets 5743GSC P-D Subaru EJ Turbo Series Valve Spring Kit (set of 16) $282.46
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 IN STOCK Gates Racing Timing Belts T328RBGates 02-08+ WRX/STi 05-08 LGT Racing Performance Timing Belt $163.60
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IN STOCK King Engine Bearings Main Bearings MB5382XPGCKing Subaru EJ20 / EJ22/ EJ25 (Including Turbo) Coated Crankshaft Main Bearing Set $135.26
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IN STOCK King Engine Bearings Main Bearings MB5740XPGKing Subaru EJ20/EJ22/EJ25 .005 Oversized Tri-Metal Perf Main Bearing Set $138.06
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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 King Engine Bearings Performance Rod Bearings CR4125XPGCSTDXKing Subaru EJ20/EJ22/EJ25 (Size STDX) pMaxKote Performance Rod Bearing Set $95.22
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