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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In StockCOBB Short Ram SF Intake System Blue
Fits: 08-14 WRX, 08-21 STI, 09-13 FXT
Only 11 leftRegular price $340.00Sale price $340.00 Regular priceUnit price per$340.00 -
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-6796051.jpg?v=1770336436&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](//jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-3520725.jpg?v=1770336436&width=220)
In StockCOBB SF Intake System-Black
Fits: 08-14 WRX, 08-21 STI, 09-13 FXT
Regular price $340.00Sale price $340.00 Regular priceUnit price per$340.00 -
![Injen [15-21 WRX/STI] Cat Back Exhaust w/ Quad Titanium Tips | SES1207TT - JDMuscleCat Back Exhaust SysteminjSES1207TT](//jdmuscleusa.com/cdn/shop/files/injen-15-21-wrxsti-cat-back-exhaust-w-quad-titanium-tips-ses1207tt-3587017.jpg?v=1781013554&width=220)
![Injen [15-21 WRX/STI] Cat Back Exhaust w/ Quad Titanium Tips | SES1207TT - JDMuscleCat Back Exhaust SysteminjSES1207TT](//jdmuscleusa.com/cdn/shop/files/injen-15-21-wrxsti-cat-back-exhaust-w-quad-titanium-tips-ses1207tt-2320019.jpg?v=1781013554&width=220)
In StockInjen Cat Back Exhaust w/ Quad Titanium Tips | SES1207TT
Fits: 15-21 WRX/STI
Only 5 leftRegular price $1,665.42Sale price $1,665.42 Regular priceUnit price per$1,665.42 -
![ETS [15-21 STI] Single Scroll Turbo Kit - JDMuscleTurbo Kits / Supercharger Kits200-30-TK-0042 BoltPT5858 BB](//jdmuscleusa.com/cdn/shop/products/ets-15-21-sti-single-scroll-turbo-kit-8159789.jpg?v=1781014050&width=220)
ETS Single Scroll Turbo Kit
Fits: 15-21 STI
Regular price From $3,095.00Sale price From $3,095.00 Regular priceUnit price per$3,095.00 -
![Forced Performance [02-07 WRX, 04-21 STI, 04-08 FXT] 84mm Turbo Inlet | 8005010A - JDMuscleTurbo Inlet Hoses and PipesFPT8005010A](//jdmuscleusa.com/cdn/shop/products/forced-performance-02-07-wrx-04-21-sti-04-08-fxt-84mm-turbo-inlet-8005010a-8075027.jpg?v=1781014154&width=220)
Forced Performance 84mm Turbo Inlet | 8005010A
Fits: 02-07 WRX, 04-21 STI, 04-08 FXT
Regular price $1,022.00Sale price $1,022.00 Regular priceUnit price per$1,022.00 -
Killer B Motorsport 02-14 WRX / 04-21 STI Super G Series Cast High Performance Oil Pan | EJ25PAN-G
Regular price $714.00Sale price $714.00 Regular priceUnit price per$714.00 -
In StockInjector Dynamics 02-14 WRX / 07-21 STI / 07-09 LGT / 06-08 FXT Fuel Injectors Top Feed 2600-XDS | 2600.48.11.WRX.4
Only 4 leftRegular price $1,593.90Sale price $1,593.90 Regular priceUnit price per$1,593.90 -
GrimmSpeed Front Mount Intercooler Pipe Kit Black Subaru STI 15-21 | GRM090232
Regular price $908.00Sale price $908.00 Regular priceUnit price per$908.00 -
![Tomei [06-14 WRX / 04+ STI] Head Gaskets 101.0 Bore 1.5MM Thickness | TOMTA4070-SB02D - JDMuscleHead GasketsTOMTA4070-SB02D](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-sti-head-gaskets-1010-bore-15mm-thickness-tomta4070-sb02d-7740407.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX / 04+ STI] Head Gaskets 101.0 Bore 1.5MM Thickness | TOMTA4070-SB02D - JDMuscleHead GasketsTOMTA4070-SB02D](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-sti-head-gaskets-1010-bore-15mm-thickness-tomta4070-sb02d-8685208.jpg?v=1781014150&width=220)
Up to $12 off
In StockTomei Head Gaskets 101.0 Bore 1.5MM Thickness | TOMTA4070-SB02D
Fits: 06-14 WRX / 04+ STI
Only 5 leftRegular price $108.00Sale price $108.00 Regular priceUnit price per$120.00 -
![Tomei [06-14 WRX/04-21 STI] Head Gasket 101.0mm 1.0mm | TOMTA4070-SB02B - JDMuscleHead GasketsTOMTA4070-SB02B](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx04-21-sti-head-gasket-1010mm-10mm-tomta4070-sb02b-3302562.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX/04-21 STI] Head Gasket 101.0mm 1.0mm | TOMTA4070-SB02B - JDMuscleHead GasketsTOMTA4070-SB02B](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx04-21-sti-head-gasket-1010mm-10mm-tomta4070-sb02b-5420424.jpg?v=1781014150&width=220)
Up to $12 off
In StockTomei Head Gasket 101.0mm 1.0mm | TOMTA4070-SB02B
Fits: 06-14 WRX/04-21 STI
Only 5 leftRegular price $108.00Sale price $108.00 Regular priceUnit price per$120.00 -
![Tomei [06-14 WRX / 04-21 STI / 05-09 LGT] Head Gasket .7mm Pair | TOMTA4070-SB02A - JDMuscleHead GasketsTOMTA4070-SB02A](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-21-sti-05-09-lgt-head-gasket-7mm-pair-tomta4070-sb02a-3090235.jpg?v=1781014153&width=220)
![Tomei [06-14 WRX / 04-21 STI / 05-09 LGT] Head Gasket .7mm Pair | TOMTA4070-SB02A - JDMuscleHead GasketsTOMTA4070-SB02A](//jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-21-sti-05-09-lgt-head-gasket-7mm-pair-tomta4070-sb02a-3109086.jpg?v=1781014154&width=220)
Up to $12 off
In StockTomei Head Gasket .7mm Pair | TOMTA4070-SB02A
Fits: 06-14 WRX / 04-21 STI / 05-09 LGT
Only 5 leftRegular price $108.00Sale price $108.00 Regular priceUnit price per$120.00 -
Up to $20 off
In StockTomei Timing Belt Subaru 2002-2014 WRX / 2004+ STI | TOMTB101A-SB01A
Only 5 leftRegular price $180.00Sale price $180.00 Regular priceUnit price per$200.00 -
Up to $48 off
In StockTomei Race Spec +1mm Intake/Exhaust Valve Set WRX 2002-2014 / STI 2004+ | TOMTA303A-SB01A
Only 5 leftRegular price $432.00Sale price $432.00 Regular priceUnit price per$480.00 -
Up to $50 off
In StockPLM Side Mount Bracket | Long Type Race Universal | SIDE-MOUNTS-LONG-RACE
Only 8 leftRegular price $75.00Sale price $75.00 Regular priceUnit price per$125.00 -
![SUBARU OEM [15-21 STI] TURBO TO UPPIPE GASKET| FFA44022AA150 - JDMuscleExhaust Gaskets and HardwareFFA44022AA150](//jdmuscleusa.com/cdn/shop/products/subaru-oem-15-21-sti-turbo-to-uppipe-gasket-ffa44022aa150-4681736.jpg?v=1781014089&width=220)
![SUBARU OEM [15-21 STI] TURBO TO UPPIPE GASKET| FFA44022AA150 - JDMuscleExhaust Gaskets and HardwareFFA44022AA150](//jdmuscleusa.com/cdn/shop/products/subaru-oem-15-21-sti-turbo-to-uppipe-gasket-ffa44022aa150-4426686.jpg?v=1781014089&width=220)
SUBARU OEM TURBO TO UPPIPE GASKET| FFA44022AA150
Fits: 15-21 STI
Regular price $12.00Sale price $12.00 Regular priceUnit price per$10.00 -
Grimmspeed 08-14 WRX/STI / 18-21 STI Post MAF Hose Kit Red | 125012
Regular price $121.00Sale price $121.00 Regular priceUnit price per$121.00
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-6796051.jpg?v=1770336436&width=220)
![COBB [08 - 14 WRX, 08 - 21 STI, 09 - 13 FXT] SF Intake System - Black | 715100 - BK - JDMuscleIntakescobb715100-BK](http://jdmuscleusa.com/cdn/shop/products/cobb-08-14-wrx-08-21-sti-09-13-fxt-sf-intake-system-black-715100-bk-3520725.jpg?v=1770336436&width=220)
![Injen [15-21 WRX/STI] Cat Back Exhaust w/ Quad Titanium Tips | SES1207TT - JDMuscleCat Back Exhaust SysteminjSES1207TT](http://jdmuscleusa.com/cdn/shop/files/injen-15-21-wrxsti-cat-back-exhaust-w-quad-titanium-tips-ses1207tt-3587017.jpg?v=1781013554&width=220)
![Injen [15-21 WRX/STI] Cat Back Exhaust w/ Quad Titanium Tips | SES1207TT - JDMuscleCat Back Exhaust SysteminjSES1207TT](http://jdmuscleusa.com/cdn/shop/files/injen-15-21-wrxsti-cat-back-exhaust-w-quad-titanium-tips-ses1207tt-2320019.jpg?v=1781013554&width=220)
![ETS [15-21 STI] Single Scroll Turbo Kit - JDMuscleTurbo Kits / Supercharger Kits200-30-TK-0042 BoltPT5858 BB](http://jdmuscleusa.com/cdn/shop/products/ets-15-21-sti-single-scroll-turbo-kit-8159789.jpg?v=1781014050&width=220)
![Forced Performance [02-07 WRX, 04-21 STI, 04-08 FXT] 84mm Turbo Inlet | 8005010A - JDMuscleTurbo Inlet Hoses and PipesFPT8005010A](http://jdmuscleusa.com/cdn/shop/products/forced-performance-02-07-wrx-04-21-sti-04-08-fxt-84mm-turbo-inlet-8005010a-8075027.jpg?v=1781014154&width=220)
![Tomei [06-14 WRX / 04+ STI] Head Gaskets 101.0 Bore 1.5MM Thickness | TOMTA4070-SB02D - JDMuscleHead GasketsTOMTA4070-SB02D](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-sti-head-gaskets-1010-bore-15mm-thickness-tomta4070-sb02d-7740407.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX / 04+ STI] Head Gaskets 101.0 Bore 1.5MM Thickness | TOMTA4070-SB02D - JDMuscleHead GasketsTOMTA4070-SB02D](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-sti-head-gaskets-1010-bore-15mm-thickness-tomta4070-sb02d-8685208.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX/04-21 STI] Head Gasket 101.0mm 1.0mm | TOMTA4070-SB02B - JDMuscleHead GasketsTOMTA4070-SB02B](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx04-21-sti-head-gasket-1010mm-10mm-tomta4070-sb02b-3302562.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX/04-21 STI] Head Gasket 101.0mm 1.0mm | TOMTA4070-SB02B - JDMuscleHead GasketsTOMTA4070-SB02B](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx04-21-sti-head-gasket-1010mm-10mm-tomta4070-sb02b-5420424.jpg?v=1781014150&width=220)
![Tomei [06-14 WRX / 04-21 STI / 05-09 LGT] Head Gasket .7mm Pair | TOMTA4070-SB02A - JDMuscleHead GasketsTOMTA4070-SB02A](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-21-sti-05-09-lgt-head-gasket-7mm-pair-tomta4070-sb02a-3090235.jpg?v=1781014153&width=220)
![Tomei [06-14 WRX / 04-21 STI / 05-09 LGT] Head Gasket .7mm Pair | TOMTA4070-SB02A - JDMuscleHead GasketsTOMTA4070-SB02A](http://jdmuscleusa.com/cdn/shop/products/tomei-06-14-wrx-04-21-sti-05-09-lgt-head-gasket-7mm-pair-tomta4070-sb02a-3109086.jpg?v=1781014154&width=220)
![SUBARU OEM [15-21 STI] TURBO TO UPPIPE GASKET| FFA44022AA150 - JDMuscleExhaust Gaskets and HardwareFFA44022AA150](http://jdmuscleusa.com/cdn/shop/products/subaru-oem-15-21-sti-turbo-to-uppipe-gasket-ffa44022aa150-4681736.jpg?v=1781014089&width=220)
![SUBARU OEM [15-21 STI] TURBO TO UPPIPE GASKET| FFA44022AA150 - JDMuscleExhaust Gaskets and HardwareFFA44022AA150](http://jdmuscleusa.com/cdn/shop/products/subaru-oem-15-21-sti-turbo-to-uppipe-gasket-ffa44022aa150-4426686.jpg?v=1781014089&width=220)
