2003 Subaru WRX Performance Engine Parts

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    • (0 reviews)
      # 73693651
      Subaru WRX 2003, Pitch Stop Mount by PERRIN Performance®. Reduce drivetrain shudder under hard acceleration by installing a PERRIN Pitch Stop mount. Subaru's with power and drivetrain upgrades will need PERRIN's more aggressive...
      Reduces drivetrain movements under hard accelerationAdds power to the wheels by eliminating lost energy
      $105.30
    • (0 reviews)
      # mpn461609024
      Subaru WRX 2003, Engine Mount Set by PERRIN Performance®. PERRIN Performance engine mount kits reduce drivetrain movement under hard acceleration, deceleration and corning. Allowing the most efficient transmission of all available...
      Patented interlock design for maximum reliabilityCNC machined 6061-T6 aluminum brackets
      $369.00
    • (0 reviews)
      # mpn458193551
      Subaru WRX 2003, Engine Mounts by Torque Solution®. Engine mounts you will see and feel a difference in your WRX or STi. These mounts are made out of high grade billet aluminum material and steel. You can rest assure that with our...
      Eliminates wheel hop / traction lossImproved 60fts
      $226.50
    • (0 reviews)
      # mpn2564199
      Subaru WRX / WRX STI 2003, Billet Pitch Stop Mount by Agency Power®. Lightweight crank pulleys have proven horsepower and torque increases time after time. Agency Power chooses to make all of the crank pulleys the same diameter as...
      Horsepower and torque increasesMade of CNC machined 6061 aluminum
      $120.00
    • (0 reviews)
      # mpn458149777
      Subaru WRX 2003, Motor Mount Set by Cusco®. Cusco offers engine performance parts and OEM replacement items. You can complete your motorsports package with a variety of high quality items.
      Made in Japan with proper quality controlCusco products are derived straight from the field of motorsports
      $312.30
    • (0 reviews)
      # mpn4179918511
      Subaru WRX 2003, Engine Pitch Stop Mount by Kartboy®. 1 Piece. Material: Forged Aluminum / Urethane. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      Designed to help you get the maximum out of your ridePerfect solution for hardcore racers and rookies alike
      $120.00
    • (0 reviews)
      # 74053122
      Subaru WRX 2003, Rotated Turbo Installation Kit by PERRIN Performance®. Each Kit includes Intake system, 3" downpipe, boost tube connection for Front Mounted Intercooler, and all other parts needed for installation for those who...
      css/images/product/pdf-icon_s.png?href[=]images/perrin-performance/info/rotated-turbo-tuner-kit-features.html[&]width[=]920[&]height[=]650
      $1,305.00
    • (0 reviews)
      # mpn469958189
      Subaru WRX With GDB Chassis 2003, GT Sport Turbo Kit by HKS®. Boost Pressure: 88.3 kPa (0.9 kgf/cm2). Turbo Size: GT2835 (56T). These kits consist of new, larger HKS GT turbos designed to bolt directly on to the stock manifold(s)....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $3,386.07
    • (0 reviews)
      # mpn469960268
      Subaru WRX 2003, Super SQV4 Blowoff Valve Kit by HKS®. HKS Super SQV (Sequential Blow Off Valve) uses a unique sequential valve structure and a differential pressure control system, which allows for a broad operating range from low...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $332.80
    • (0 reviews)
      # mpn458128148
      Subaru WRX Baffle_O Ultimate Pickup_O 2003, EJ Series High Performance Oil Pan by Killer B Motorsport®. V2 Performance Oil pan is designed to reliably meet the demands of high performance Subaru Engines used on street or track...
      High quality at an affordable priceExpertly made from premium materials
      $508.00
    • (0 reviews)
      # 73693637
      Subaru WRX 2003, Front Mount Intercooler by PERRIN Performance®. Swap out your overheated factory top mount intercooler for the PERRIN Front Mount Intercooler to get the most out of your vehicle . Add power and a new bold look all...
      Bar and plate core design for maximum durabilitySturdy steel support beams
      $805.50
    • (0 reviews)
      # mpn358582069
      Subaru WRX / WRX STI 2003, Intercooler Tank by Moroso®. With this quality part backed by a great price, you can enjoy your vehicle so much more than you thought was possible. This Moroso part is specifically engineered to make your...
      Features:Fabricated aluminum for strength, factory tanks fail after repeated high-heat situations Finish can be polished, chromed, painted, powder coated or left as-is for a race look Includes billet aluminum filler neck, Moroso Racing Radiator Cap in the stock pressure range and integral billet aluminum hose fittings that are better looking and more trouble-free than screw in fittings By having this style of radiator neck, the user can change the operating pressure by purchasing Moroso's No. 63328 Racing Radiator Cap in the 27-29 lbs. range
      $152.95
    • (0 reviews)
      # mpn469958256
      Subaru WRX STI 2003, Intercooler Kit by HKS®. Type: S. Size: 600 mm x 244 mm x 65 mm. Front Mount. Aluminum. Front mount intercooler kit with S-Type core for GDB IMPREZA. (Core size : 600 x 244 x 65). The intercooler core, buffing...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $1,736.79
    • (0 reviews)
      # mpn469958325
      Subaru WRX 2003, Super Turbo Muffler Intercooler Kit by HKS®. Type: S. Size: 600 mm x 244 mm x 65 mm. All HKS Intercoolers improve both the efficiency and power of any turbocharged application by rapidly reducing inherent heat...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $1,441.07
    • (0 reviews)
      # 81007254
      Subaru WRX 2003, Intercooler Kit by Mishimoto®. OEM intercooler setups are not designed to handle the higher levels of boost that result from modifying your turbocharged vehicle. The Mishimoto Intercooler is manufactured with...
      Direct fitProvides 35°F temperature drop compared to stock intercooler on a stage 2 tune
      $940.00 - $1,064.00
    • (0 reviews)
      # 80951357
      Subaru WRX 2003, Intercooler Hose Kit by Mishimoto®. Material: Silicone. Includes: 3 Silicone Hoses, 7 T-Bolt Clamps. Mishimoto's Silicone Intercooler Hoses are made from a combination of high-grade silicone and heat-resistant...
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $102.00
    • (0 reviews)
      # 454063902
      Subaru WRX 2003, Performance Intercooler Kit by Mishimoto®. Material: Aluminum. OEM intercooler setups are not designed to handle the higher levels of boost that result from modifying your turbocharged vehicle. The Mishimoto...
      Direct fitProvides 35°F temperature drop compared to stock intercooler on a stage 2 tune
      $580.00
    • (1 review)
      # 80951353
      Subaru WRX 2003, Turbocharger Hose Kit by Mishimoto®. Material: Silicone. Includes: 9 Silicone Hoses. Mishimoto turbo hoses are made from a combination of high-grade silicone and heat-resistant embedded fibers for a high-quality...
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $108.00
    • (0 reviews)
      # mpn470658541
      Subaru WRX 2003, Intercooler Kit by Turbonetics®.
      $971.43
    • (0 reviews)
      # 93466816
      Subaru WRX 2003, Top Mount Intercooler by AVO®.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $730.00 - $899.00
    • (0 reviews)
      # mpn457859850
      Subaru WRX 2003, Adjustable Camshaft Gears by Brian Crower®. Set/4. With Arp Fastener Bolts. (Subaru Ej205 - WRX/Ej257 - Sti). BC gears are CNC machined from aerospace grade, 6061-T6 billet aluminum for ultimate tensile strength....
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $581.13
    • (0 reviews)
      # 73693643
      Subaru WRX 2003, Lightweight Crank Pulley by PERRIN Performance®. A true weight savings that can be felt with every blip of the gas pedal. Lighten up your rotating engine parts to free up power. The PERRIN Performance Crank Pulley...
      Reduced weight and increased throttle response, horsepower, and torquePerfectly fits all 1993 or newer Subaru boxer engines
      $119.70
    • (0 reviews)
      # mpn457995051
      Subaru WRX / WRX STI 2003, Non-Underdrive Pulley Kit by Go Fast Bits®. Color: Black. It is now shaped to look exactly like the factory pulley, so it goes unnoticed in your engine bay - it even uses the factory belts. A significant...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $147.28
    • (0 reviews)
      # mpn457995052
      Subaru WRX / WRX STI 2003, Underdrive Crankshaft Pulley Kit by Go Fast Bits®. Material: Aluminum. 3-piece underdrive pulley kit. Made from anodized aircraft-grade aluminium and offers sharper throttle response and faster...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $301.91
    • (0 reviews)
      # mpn458193560
      Subaru WRX / WRX STI 2003, Lightweight Crank Pulley by Torque Solution®. Torque Solution has designed this crank pulley not only to improve performance but to surpass the quality of the original pulley. A critical feature of the...
      599 Grams (~3.5lbs lighter than OEM)lightweight 6061-T6 Billet Aluminum
      $102.81
    • (0 reviews)
      # 15848391
      Subaru WRX / WRX STI 2003, Crank Pulley by Agency Power®. Lightweight crank pulleys have proven horsepower and torque increases time after time. Agency Power chooses to make all of the crank pulleys the same diameter as the factory...
      Horsepower and torque increasesMade of CNC machined 6061 aluminum
      $130.00
    • (0 reviews)
      # mpn4179918513
      Subaru WRX 2003, Aluminum Crankshaft EJ Pulley by Kartboy®. Kartboy Crankshaft Pulley weighs in at 2.4 Pounds. A good bit lighter than stock but not light enough to throw a CE light. Free up a little crank HP and get some KB Bling.
      Designed to help you get the maximum out of your ridePerfect solution for hardcore racers and rookies alike
      $85.00
    • (0 reviews)
      # mpn458195873
      Subaru WRX 2003, Performance Damper by Fluidampr®. Length: 1.927". Sfi: 18.1. Bore Diameter Min And Max: 0.9436" / 0.9446". Type: Single. Material: Steel. Finish: Black Zinc. Engine Balance: Internal. Outer Diameter: 5-3/8". A...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $381.97
    • (0 reviews)
      # mpn469960018
      Subaru WRX 2003, Hybrid Sport Oil Filter by HKS®. Size: 68 x H65. Thread: M20 x P1.5. Compared to current aftermarket sports oil filters, this innovative product from HKS improves oil pressure drop and flow properties by...
      Designed for the ultimate in quality and performanceSignificantly improves oil pressure drop and flow properties
      $22.93
    • (0 reviews)
      # mpn3064650435
      Subaru WRX / WRX STI 2003, Stainless Steel Reusable Oil Filter by HUBB Filters®. 3" Outside Diameter. M20 x 1.5 mm Thread size. Spin-On Filter. The HUBB filter looks and works completely differently than a conventional filter and...
      Made from surgical stainless steelFilter-in-a-filter design
      $98.99
    • (0 reviews)
      # mpn1904639
      Subaru WRX / WRX STI 2003, Pro Series Premium Oil Filter by K&N®. Filter Material: High Flow Premium Media. Gasket Material: Nitrile Rubber. Height: 3" (76 mm). Outside Diameter: 3.156" (80 mm). Style: Canister. Thread...
      High flow rates with reduced filter restrictionHigh capacity filter media allows for extended change intervals
      $7.59
    • (0 reviews)
      # 98906773
      Subaru WRX 2003, Camshaft by Brian Crower®. BC high performance camshafts are ground on state-of-the-art CNC cam grinders to insure accuracy and tolerances to within .02mm. Every BC camshaft profile has been prototyped and dyno...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $708.03
    • (0 reviews)
      # mpn458151179
      Subaru WRX STI 2003, S3 Camshafts by GSC Power-Division®. GSC Power-Division S3 camshafts for the EJ20 JDM/EURO 2.0L STi. These cams are built to suite the highest horsepower drag Subys. With a power range of 750-1000WHP and a rev...
      Intake 282 Duration, 11.3mm LiftExhaust 282 Duration, 11.3mm Lift
      $902.39
    • (0 reviews)
      # 192474779
      Subaru WRX 2003, H-Series Connecting Rod Bearing Set by Clevite®. These bearings are identified by a letter H in the part number suffix. Part numbering is based on the same core number as the standard passenger car parts for the...
      High quality at an affordable priceExpertly made from premium materials
      $17.21 - $21.50
    • (0 reviews)
      # 192474902
      Subaru WRX 2003, H-Series Crankshaft Main Bearing Set by Clevite®. These bearings are identified by a letter H in the part number suffix. Part numbering is based on the same core number as the standard passenger car parts for the...
      High quality at an affordable priceExpertly made from premium materials
      $95.27 - $141.87
    • (0 reviews)
      # 192474749
      Subaru WRX 2003, A-Series Crankshaft Main Bearing Set by Clevite®. Clevite is an American brand with one of the oldest pedigrees and supplies pistons, assemblies, cylinder liners, bearings and valves for American commercial...
      Expertly crafted from premium materialsDesigned to match rigorous quality standards
      $61.91
    • (0 reviews)
      # 96170324
      Subaru WRX 2003, 6000 Series Competition Valves by Ferrea®. With Radius Groove. Tip Length: 0.1378". Pricing is Per 1 Piece. The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $21.28 - $22.07
    • (0 reviews)
      # 96170329
      Subaru WRX 2003, Competition Plus Valve by Ferrea®. Tip Length: 0.1378". To manufacture our Competition Plus Engine valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $38.98 - $51.63
    • (0 reviews)
      # mpn469864228
      Subaru WRX 2003, Engine Exhaust Valve by Supertech®. Head Diameter: 33.00 mm (+1.00 mm). Stem Diameter: 5.96 mm. Length: 104.70 mm. Supertech manufactures a variety of high performance Inconel valves for many applications. These...
      Will help get the most out of your engineDesigned with utmost precision for perfection
      $23.13
    • (0 reviews)
      # 450509169
      Subaru WRX 2003, Engine Intake Valve by Supertech®. Stem Diameter: 5.96 mm. Supertech stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. Supertech have chosen this material specifically...
      Will help get the most out of your engineDesigned with utmost precision for perfection
      $16.12 - $16.49
    • (0 reviews)
      # mpn457859805
      Subaru WRX 2003, Piston Set by Brian Crower®. Set of Four. Upgrade to 2.17L. CP Custom Pistons. Includes Pins, Rings & Locks. (Subaru Ej205-WRX Stroker). For Stroker Motors. The BC stroker kit for the Subaru EJ20 engine...
      BC 4340 billet steel crankshaft (79mm stroke)BC 4340 Sportsman or Pro Series connecting rods
      $813.59
    • (0 reviews)
      # mpn457859734
      Subaru WRX 2003, I Beam Extreme Connecting Rods by Brian Crower®. Set of Four. I Beam Extreme With Arp Custom Age 625+ (Subaru Ej205/Ej257). Rod Length: 5.141". The I-Beam is a proven configuration that is very popular among the...
      $919.05
    • (0 reviews)
      # mpn457859736
      Subaru WRX 2003, BC625+ Connecting Rods by Brian Crower®. Set of Four. Bc625+ With Arp Custom Age 625+ Fasteners (Subaru Ej205/Ej257). Rod Length: 5.141".
      $706.25
    • (0 reviews)
      # mpn457859735
      Subaru WRX 2003, I-Beam Connecting Rods by Brian Crower®. Set of Four. I Beam With Arp2000 Fasteners (Subaru Ej205/Ej257). Rod Length: 5.141". The I-Beam is a proven configuration that is very popular among the forced induction...
      $716.69
    • (0 reviews)
      # mpn457859787
      Subaru WRX 2003, Sportsman Connecting Rods by Brian Crower®. Set of Four. Sportsman With Arp2000 Fasteners (Subaru Ej205/Ej257). Rod Length: 5.141". The Sportsman is rated in excess of 200HP per cylinder and priced for the everyday...
      $450.93
    • (0 reviews)
      # 147467634
      Subaru WRX / WRX STI 2003, Forged Coated Pistons by Icon Pistons®. Rod 130.5mm Deep Square Dish 13.4cc. Each Icon piston is forged from high-strength, heat treated, 2618 aluminum alloy. This makes Icon pistons significantly lighter...
      High ductility 2618 alloyDual forced pin oiling on most applications
      $154.19 - $649.56
    • (0 reviews)
      # 118473547
      Subaru WRX 2003, Piston Kit by JE Pistons®. 23deg Inverted Dome. Ultra-Light Gas Ported. JE designs are specifically engineered for extreme applications up to, and including, professional competition. In this environment, the...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $548.73
    • (0 reviews)
      # mpn458141432
      Subaru WRX 2003, Sport Compact 130.5mm H-Beam Connecting Rods by K1 Technologies®. K1 Technologies connecting rods offer world-class performance at an affordable price. Their race-ready connecting rods are made from 4340 forged...
      Billet 4340 Steel H-Beam DesignDesigned by in-house engineering team for high-stress racing applications
      $372.51
    • (0 reviews)
      # mpn3967735122
      Subaru WRX / WRX STI 2003, Classic Race Piston Rings by Total Seal®. Bore: 3.622". Oversize: Standard. Tension: Standard. 1st Compression Ring Size: 1.2 mm. 2nd Compression Ring Size: 1.2 mm. Oil Ring Size: 2.5 mm. Total Seal® is...
      Made to fit and suit your diverse needsWill boost the efficiency of your vehicle
      $93.17
    • (0 reviews)
      # mpn461609439
      Subaru WRX 2003, Oil Cooler Kit by PERRIN Performance®. Reduce engine oil temperatures, extend engine life, and keep your horsepower consistent with a PERRIN oil cooler. In racing conditions engine oil temperature skyrockets. This...
      Helps control engine oil temperaturesEfficient heat dissipation
      $670.50
    • (0 reviews)
      # 80951319
      Subaru WRX 2003, Aluminum Oil Cooler Kit by Mishimoto®. Increase in Oil Capacity: 0.50 Quarts (0.473L). Temperature Difference: 16 Degrees C. Pressure Drop: 1-2 psi. Includes: 2 Application Specific Mounting Brackets, 10-Row Oil...
      Provides Dramatic Temperature DropMinimal pressure drop
      $382.50 - $429.25
    • (0 reviews)
      # 98906760
      Subaru WRX 2003, Crankshaft by Brian Crower®. BC crankshafts are made from the finest, aerospace grade 4340 steel billet material. CNC machined on state of the art, 5 axis Mazak Integrex 300-IV CNC machines to exacting tolerances...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $2,017.88
    • (0 reviews)
      # 98906763
      Subaru WRX 2003, Stroker Kit by Brian Crower®. Crankshafts: BC crankshafts are made from the finest, aerospace grade 4340 steel billet material. CNC machined on state of the art, 5 axis Mazak Integrex 300-IV CNC machines to...
      BC 4340 billet steel crankshaft (79mm stroke)BC 4340 Sportsman or Pro Series connecting rods
      $3,061.10 - $3,484.63
    • (0 reviews)
      # 73693658
      Subaru WRX 2003, Recirculating Blow Off Valve by PERRIN Performance®. Adjustable relief pressure and flow control makes fine-tuning on the fly simple and quick. With large 1.225" inlets and outlets, the PERRIN Blow Off Valve is...
      css/images/product/pdf-icon_s.png?href[=]images/perrin-performance/info/recirculating-blow-off-valve-features.html[&]width[=]920[&]height[=]650
      $310.50
    • (0 reviews)
      # mpn461609131
      Subaru WRX 2003, Turbo Thermal Blanket by PERRIN Performance®.
      css/images/product/pdf-icon_s.png?href[=]images/perrin-performance/info/thermal-blanket-features.html[&]width[=]920[&]height[=]650
      $129.60
    • (0 reviews)
      # mpn461609130
      Subaru WRX 2003, Turbo Heat Shield by PERRIN Performance®.
      css/images/product/pdf-icon_s.png?href[=]images/perrin-performance/info/turbo-heat-shield-features.html[&]width[=]920[&]height[=]650
      $75.60
    • (0 reviews)
      # mpn461609551
      Subaru WRX 2003, Rotated Turbo Kit Hard Parts by PERRIN Performance®. Designed utilizing the latest technology, this product by PERRIN features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $1,125.00
    • (0 reviews)
      # mpn461608999
      Subaru WRX 2003, EBCS Pro Boost Control Solenoid by PERRIN Performance®. The 3-port Electronic Boost Control Solenoid (EBCS Pro) is designed to control today's high performance turbochargers with its ultra-fast response and...
      css/images/product/pdf-icon_s.png?href[=]images/perrin-performance/info/electronic-boost-control-solenoid-features.html[&]width[=]920[&]height[=]650
      $135.00
    • (0 reviews)
      # mpn457995110
      Subaru WRX / WRX STI 2003, Respons TMS Adjustable Bias Venting Diverter Blow Off Valve by Go Fast Bits®. Color: Black. On the surface it may look like just another dual-port blow-off valve, but the Respons is actually much more...
      Real time vacuum display
      $281.70
    • (0 reviews)
      # mpn457995122
      Subaru WRX / WRX STI 2003, Deceptor Pro II Bias Venting Diverter Blow Off Valve by Go Fast Bits®. Color: Black. The modern and compact volume controller, with its subtly backlit volume dial, controls a high-torque servo motor which...
      Real time vacuum display
      $423.90




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    2003 Subaru WRX Performance Engine Parts Reviews

    Average rating:  5  5 - 10 reviews
    5 of 5
    Dayco BP111-Gold Label Industrial V-Belt
    Appears to be exact replacement of original belt. Very easy to install. Haven't used long enough to judge life of belt. Appears to be of good quality. Very good price compared to local auto supply.
    RPosted by Ronald (Gilmanton, NH) / March 2, 2017
    Was this review helpful for you? Yes
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    2003 Subaru WRX Models
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