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WRX & STi performance parts!At OAKOS Automotive we ship your products FAST!We accept Visa, Mastercard, American Express, Paypal & More. Please contact us with any questions.
OAKOS Automotive is dedicated to the industry.  We are a member of and actively support SEMA.  We've attended the annual SEMA Show in Las Vegas every year since 2002!


Sales@oakos.com
Tel (Toll Free!):
866-97-OAKOS
866-976-2567
Local: 586.803.1750
Fax: 586-803-1760
Office Hours:
M-F 10AM-5PM Eastern Time

(Walk-In Customers Welcomed!)

Online Ordering
24 / 7 / 365!


Check Out Our Ads In DSport and SubieSport Magazines!

See our ads in Subiesport and Dsport magazines!  Tons of Subaru, Nissan and Mazda performance parts in stock!

 
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Why Buy From OAKOS?


Meet The Team


2004 Subaru Impreza WRX STi Specifications
Also See Our STi Gallery From The 2003 NAIAS


Engine | Drivetrain | Chassis | Suspension | Brakes

Engine

Engine Model EJ257
Engine Type

Horizontally Opposed, 4 Cylinder
Intercooled Turbo

Displacement 2.5 Liters (2,457cc / 149.9 Cubic Inches)
Bore x Stroke 3.92" x 3.11" (99.5mm x 79mm)
Firing Order 1 - 3 - 2 - 4
Compression Ratio 8.2 : 1
Valvetrain DOHC 4 Valves Per Cylinder
w/ Active Valve Control System (AVCS)
Horsepower 300 @ 6000 rpm
Torque (lb. ft.) 300 @ 4000 rpm
Redline 7000 rpm
 

Drivetrain

Gearbox

Longitudinally Mounted

Center Differential  Limited Slip w/ Driver Controlled Center Differential (DCCD)
Front Differential Suretrac Limited Slip
Rear Differential Mechanical Limited Slip
Forward Gears 6
Clutch

Dry Single Plate Diaphragm

Gear Ratios  
   1 3.636
   2 2.375
   3 1.761
   4 1.346
   5 0.971
   6 0.756
   Reverse -
   Final Drive 3.9
 

Chassis

Overall Length 173.8"
Overall Height 56.3"
Overall Width 68.5"
Weight, Total (MT) 3263 lbs.
Weight, Front 1893 lbs.
Weight, Rear 1370 lbs.
Weight Distribution, F/R 58% / 42%
Wheelbase 100"
Tread, Front 58.7"
Tread, Rear 58.5"
Ground Clearance -
Steering Ratio

15.2:1

Turns Lock To Lock

2.7

Wheels

17" x 7.5" BBS

Wheel Bolt Pattern

100mm, 5 lugs

Tires

225/45R17, Bridgestone Potenza RE070

 

Suspension

Front

Independent, Macpherson Inverted Strut, Coil Spring

Stabilizer Bar Diameter

19mm

Camber

-0 30'

Caster

4 50'

 
Rear

Independent, Dual Link, Coil Spring, Inverted Strut

Stabilizer Bar Diameter

20mm

Camber

-0 40'

 

Brakes

  Front Rear
Type Ventilated Disc,
4 Piston Brembo Calipers
Ventilated Disc,
2 Piston Brembo Calipers
Disc Outer Diameter 326mm (12.83") 316mm (12.44")
Disc Effective Diameter 268mm (10.55") 268mm (10.55")
Disc Thickness 30mm 20mm
Brake Distribution Electronic
 
     

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Tel: 866-97-OAKOS (Local: 586-803-1750)

Copyright 1999-2014 OAKOS Automotive

Fax: 586-803-1760

All Rights Reserved

Sales@oakos.com Last Updated: 08/04/14