Optimize your Subaru STI 2015-2021 engine's performance with a comprehensive range of top-quality aftermarket parts from industry-leading brands. Elevate the power and efficiency of your vehicle with ETS, HKS, Perrin, Mishimoto, AMS, Grimmspeed, Cobb, Remark, PLM, Turbosmart, IAG Performance, and more. Enhance airflow and filtration through AIR INTAKE DUCTS and COLD AIR INTAKES, while maintaining engine cleanliness with AIR OIL SEPARATORS and CATCH CANS. Experience impeccable control and responsiveness with BLOW OFF VALVES and BOOST CONTROL SOLENOID COVERS, complemented by the reliability of ENGINE MOUNTS and meticulously crafted ENGINE MANAGEMENT HARNESSES. Simplify maintenance and improve overall performance with DIPSTICKS and explore comprehensive ENGINE PACKAGE DEALS for a holistic approach to upgrading your Subaru WRX's engine. Unleash the full potential of your vehicle through precision-engineered components designed to deliver both power and durability, all meticulously designed to give your Subaru STI the edge on the road or track.
2015-2021 Subaru WRX STI Engine Parts
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GrimmSpeed 02-14 WRX / 04-21 STI / 05-12 LGT / 04-13 FXT Phenolic Thermal Spacer 3mm | 018001
Regular price $80.00Sale price $80.00 Regular priceUnit price per$80.00 -
Up to $102.50 off
In StockPerrin 08-14 WRX / 08-15 STI Cold Air Intake Black | PSP-INT-322BK
Only 7 leftRegular price $307.50Sale price $307.50 Regular priceUnit price per$410.00 -
Up to $18.05 off
In StockMishimoto 15-21 STI Airbox | MMAB-STI-15
Only 1 leftRegular price $177.95Sale price $177.95 Regular priceUnit price per$196.00 -
In StockNRG Fender Washer Kit FW-100 Purple - Universal | FW-100PP
Only 3 leftRegular price $28.60Sale price $28.60 Regular priceUnit price per$28.60 -
In StockTurbo XS T Clamp Stainless Steel 55-61mm/2.16-2.4in - Universal | T55-61
Regular price $14.00Sale price $14.00 Regular priceUnit price per$14.00 -
In StockTurbo XS T Clamp Stainless Steel 67-73mm/2.63-2.87in - Universal
Regular price $14.00Sale price $14.00 Regular priceUnit price per$14.00 -
Up to $5.76 off
In StockGREDDY TO TXS TYPE H BOV Adapter - Universal
Only 5 leftRegular price $36.00Sale price $36.00 Regular priceUnit price per$41.76 -
Up to $8.76 off
In StockTurbo XS HKS-to-Turbo XS BOV Adapter - Universal | H-HKS
Regular price $33.00Sale price $33.00 Regular priceUnit price per$41.76 -
Up to $68.12 offTurboXS Up Pipe Subaru Turbo Models | WS-UP
Fits: WRX/STI/LGT
Regular price $204.66Sale price $204.66 Regular priceUnit price per$272.78 -
Up to $19 off
In StockTurbosmart eB2 4 Port Boost Control Solenoid - Universal
Only 10 leftRegular price $170.99Sale price $170.99 Regular priceUnit price per$189.99 -
Up to $3 off
In StockTurbosmart WG38/40/45 Collar Tool | 0505-3008
Fits: Universal
Only 14 leftRegular price $26.99Sale price $26.99 Regular priceUnit price per$29.99 -
Up to $4.40 off
In StockTurbosmart WG38/40/45/IWG 10PSI outer Spring Brown/Blue - Universal
Only 7 leftRegular price $39.59Sale price $39.59 Regular priceUnit price per$43.99 -
Up to $43.10 off
In StockTurbosmart Black Supersonic Blow Off Valve
Fits: 02-07 WRX, 04-21 STI
Only 2 leftRegular price $387.89Sale price $387.89 Regular priceUnit price per$430.99 -
Up to $8.30 offTurbosmart WG38 Ultragate 38 Wastegate 7psi Black - Universal
Regular price $268.44Sale price $268.44 Regular priceUnit price per$276.74 -
Up to $43.80 off
In StockTurbosmart Comp-Gate40 External Wastegate 14PSI Red - Universal
Only 4 leftRegular price $394.19Sale price $394.19 Regular priceUnit price per$437.99 -
Grimmspeed V2 Manual Boost Controller - Universal | 070002X
Regular price From $155.00Sale price From $155.00 Regular priceUnit price per$155.00
