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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Carrillo Pro-SA 3/8 WMC Bolt Connecting Rods WRX/STI Subaru Models EJ18/EJ20/EJ257 2002-2020
Regular price $891.45Sale price $891.45 Regular priceUnit price per$0.00 -
Carrillo Pro-H WMC Connecting Rods WRX/STI Turbo Models EJ20 / EJ257 2002-2020
Regular price $1,032.15Sale price $1,032.15 Regular priceUnit price per$0.00 -
Carrillo Pro-H Beam CARR Connecting Rods WRX/STI Subaru Turbo Models EJ20/EJ257
Regular price $1,225.35Sale price $1,225.35 Regular priceUnit price per$0.00 -
Up to $84.59 offWiseco Piston Set 99.75mm Bore WRX 2006-2014 / STI 2004-2020 Subaru Turbo Models
Regular price $761.30Sale price $761.30 Regular priceUnit price per$845.89 -
Up to $84.59 offWiseco Piston Set 99.5mm Bore WRX 2006-2014 / STI 2004-2020 Subaru Turbo Models
Regular price $761.30Sale price $761.30 Regular priceUnit price per$845.89 -
In StockWiseco 130.5mm BoostLine Connecting Rods WRX/STI EJ20/EJ25 Turbo 2002-2020
Only 6 leftRegular price $799.99Sale price $799.99 Regular priceUnit price per$799.99 -
Royal Purple Max-Tuff Synthetic Assembly Lubricant | 8oz - Universal
Regular price $16.19Sale price $16.19 Regular priceUnit price per$0.00 -
Up to $12 off
In StockTomei Head Gasket 1.2mm STI 2004-2020 / WRX 2006-2014 Subaru 2.5L Turbo Models | Pair
Only 5 leftRegular price $108.00Sale price $108.00 Regular priceUnit price per$120.00 -
Up to $110.05 off
In StockManley Turbo Tuff Series Crankshaft 79mm WRX/STI EJ20 / EJ25 2002-2019 | 190040B
Only 1 leftRegular price $2,091.05Sale price $2,091.05 Regular priceUnit price per$2,201.10 -
Up to $54.15 offManley L Turbo Tuff Pro Series I Beam Connecting Rods WRX/STI 2002-2019 EJ20/EJ25 | 14436-4
Regular price $1,028.90Sale price $1,028.90 Regular priceUnit price per$1,083.05 -
Up to $110.05 offManley Turbo Tuff Series Crankshaft 75mm WRX/STI EJ20 / EJ25 2002-2019 | 190160B
Regular price $2,091.05Sale price $2,091.05 Regular priceUnit price per$2,201.10 -
JE Pistons Pro Seal 100mm 0.051in Headgasket
Fits: WRX/STI EJ25/EJ257
Regular price $101.73Sale price $101.73 Regular priceUnit price per$101.73 -
JE JG2804-3386 Piston Rings 86mm | Set of 4 1.2mm Top 1.5mm 2nd 3.0mm Oil - Universal | JG2804-3386
Regular price $183.99Sale price $183.99 Regular priceUnit price per$183.99 -
JE Pistons Pro Seal 101.3mm Bore 1.0mm Thick MLS Head Gasket
Fits: 08+ WRX/STI
Regular price $190.43Sale price $190.43 Regular priceUnit price per$190.43 -
JE Pro Seal 102.3mm 0.039in Headgasket WRX/STI EJ25/EJ257 | SB1002-039
Regular price $190.43Sale price $190.43 Regular priceUnit price per$190.43 -
JE Pro Seal 100mm 0.039in Headgasket WRX/STI EJ25/EJ257
Regular price $101.73Sale price $101.73 Regular priceUnit price per$101.73
