Optimize your Subaru STI 2008-2014 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.
2008-2014 Subaru WRX STI Engine Parts
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Injector Dynamics Denso USCAR PnP Injector Adapter - Universal
Regular price $17.33Sale price $17.33 Regular priceUnit price per$17.33 -
Up to $18.90 off
In StockPerrin Post MAF Hose Black | PSP-INT-355
Fits: 08-14 WRX, 08-21 STI, 05-09 LGT
Only 14 leftRegular price $107.10Sale price $107.10 Regular priceUnit price per$126.00 -
Up to $13.20 off
In StockPerrin Black Radiator Shroud
Fits: 08-14 WRX/STI
Only 13 leftRegular price $74.80Sale price $74.80 Regular priceUnit price per$88.00 -
Up to $13.20 off
In StockPerrin Red Radiator Shroud
Fits: 08-14 WRX/STI
Only 17 leftRegular price $74.80Sale price $74.80 Regular priceUnit price per$88.00 -
Up to $114.40 offPerrin Black Air Oil Separator Subaru 2008-2014 WRX / 2002-2020 STI with Top Mount Intercooler | PSP-ENG-606BK
Regular price $457.60Sale price $457.60 Regular priceUnit price per$572.00 -
Up to $6.05 off
In StockMishimoto Racing Thermostat | MMTS-WRX-01
Fits: 02-14 WRX, 04-21 STI, 05-09 LGT, 04-05 FXT, 09 FXT
Regular price $64.95Sale price $64.95 Regular priceUnit price per$71.00 -
Up to $3.57 off
In StockMishimoto Transition Coupler 2.5-in to 3-in - Universal
Regular price From $11.95Sale price From $11.95 Regular priceUnit price per$13.00 -
Up to $2.23 off
In StockMishimoto Transition Coupler 2-in to 2.5-in - Universal
Only 14 leftRegular price From $9.95Sale price From $9.95 Regular priceUnit price per$12.05 -
Up to $3.05 off
In StockMishimoto Aluminum Radiator Stay
Fits: 08-14 WRX/STI
Only 6 leftRegular price From $30.95Sale price From $30.95 Regular priceUnit price per$34.00 -
Up to $5 off
In StockCusco High Pressure Radiator Cap - Universal
Only 3 leftRegular price $29.00Sale price $29.00 Regular priceUnit price per$34.00 -
Up to $10 off
In StockAEM DryFlow Air Filter Kit 4in x 7in DRYFLOW - Universal | 21-2057DK
Only 20 leftRegular price $62.99Sale price $62.99 Regular priceUnit price per$72.99 -
In StockAEM 2.75 inch Dryflow Air Filter with 9 inch Element - Universal | 21-2029DK
Only 14 leftRegular price $83.99Sale price $83.99 Regular priceUnit price per$83.99 -
Up to $565.30 offAEM Infinity 506 Stand-Alone Programmable Engine Management System - Universal | 30-7106
Regular price $1,506.92Sale price $1,506.92 Regular priceUnit price per$2,072.22 -
Up to $26.40 off
In StockAEM Fuel Pump 340lph - Universal | 50-1000
Regular price $102.55Sale price $102.55 Regular priceUnit price per$128.95 -
In StockDeatschwerks Top Feed 565cc Injectors
Fits: 02-14 WRX, 07-21 STI, 07-12 LGT, 07-09 OBXT
Only 8 leftRegular price $379.00Sale price $379.00 Regular priceUnit price per$379.00 -
Up to $21.05 off
In StockMishimoto Ignition Coil Set - 4-Pack for Improved Engine Performance
Fits: 04-10 WRX/STI
Only 4 leftRegular price $205.95Sale price $205.95 Regular priceUnit price per$227.00
