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Subaru · Chassis GD

IMPREZA
WRX STI

2002 – 2007 2 Engine Options 3 Kit Tiers

Rally homologation with road-car paperwork. Boxer rumble standard.

Shop Kits Fluid Spec Sheet

Impreza WRX / STi (GD) · Engine Service

OIL CHANGE KITS

Spec'd to this platform's factory oil capacity, viscosity, and filter fitment — pick the tier that matches how the car lives.

OEM / OEM+
Photo coming soon

Subaru WRX STi — OEM / OEM+

$116.98

Fits EJ25

  • OEM-grade or OEM+ full synthetic
  • OEM or OEM-spec filter
  • Crush washer / drain hardware
  • For clean daily & stock-plus builds
Street Performance
Subaru WRX STi — Street Performance

Subaru WRX STi — Street Performance

$150.98

Fits EJ25

  • Motul 8100 or 300V full synthetic
  • Premium-spec oil filter
  • Crush washer / drain hardware
  • Built for OEM+ and light-mod builds
Track / Purpose Build
Subaru WRX STi — Track / Purpose Build

Subaru WRX STi — Track / Purpose Build

$200.98

Fits EJ25

  • Motul 300V Competition / Racing
  • High-flow performance filter
  • Race-spec drain hardware
  • For track, time attack & drag builds
Every kit ships withNitrile glovesDisposable funnelShop towelsOil change stickerAdapt decalHow the sticker works ↓

Stopping Power

BRAKE SERVICE

DOT 4 minimum for street use — step up to DOT 5.1 or RBF Factory Line for track heat.

ELF Moto DOT4 (0.500L)
Elf · 0.500 L
Brake Fluid DOT 4
Street & daily service spec
$10.95
Motul DOT5.1 (0.500L)
Motul · 0.500 L
DOT 5.1
High-performance street
$11.70
Motul RBF600 (0.500L)
Motul · 0.500 L
RBF 600 Factory Line
Track-day standard · 312°C dry
$23.58
Motul RBF660 (0.500L)
Motul · 0.500 L
RBF 660 Factory Line
Endurance & race · 325°C dry
$32.35

Gearbox & Final Drive

DRIVETRAIN FLUIDS

Matched to this platform's factory gearbox and final-drive specs below.

Impreza WRX / STi (GD) drivetrain spec: Transmission — 75w-90 (GL-5) — Manual · AF3 (DEXRON-III) — Automatic. Differential — 80w-90 (GL-5) · 1.27 qt (1.2 L) front · 0.85 qt (0.8 L) rear.
Motul Multi ATF (1L)
Motul · 1 L
Multi ATF
Automatic transmissions
$19.11
Motul Gear 300 (1L)
Motul · 1 L
Gear 300 75W-90
Manual gearboxes & diffs
$34.06
Motul Gear 300 LS (1L)
Motul · 1 L
Gear 300 LS 75W-90
Limited-slip differentials
$36.57
Motul Gear Competition (1L)
Motul · 1 L
Gear 300 Competition 75W-140
Race diffs & high heat
$37.32

MASTER FLUID KITS — COMING SOON

Every fluid the Impreza WRX / STi (GD) needs — engine, gearbox, final drive, and brakes — boxed as one chassis-complete service kit.

Service Reference

FLUID SPEC SHEET

Factory service data for the Subaru Impreza WRX / STi (GD) — capacities, fluid types, and fitment notes.

01Vehicle
Chassis Code
GD
Model Years
2002 – 2007
Engine(s)
EJ20 — 2.0L Turbo H4 · 16v DOHC · 1,994 cc · WRX
EJ25 — 2.5L Turbo H4 · 16v DOHC · STi
Transmission(s)
5-speed TY75 Manual (WRX)
6-speed TY85 Manual (STi)
4-speed TV1A4 Automatic
02Engine Oil
Engine Oil Viscosity
5w-30
Engine Oil Capacity
4.76 qt (4.5 L)
03Transmission
Transmission Fluid Type
75w-90 (GL-5) Manual
AF3 (DEXRON-III) Automatic
Transmission Capacity
3.70 qt (3.5 L) 5-speed
2.32 qt (2.2 L) 6-speed
10.04 qt (9.5 L) Automatic
04Differential
Differential Oil Type
80w-90 (GL-5)
Differential Capacity
1.27 qt (1.2 L) front · 0.85 qt (0.8 L) rear

Capacities are approximate — always set the final level at the dipstick or fill plug, and verify against your service manual before work.

Service Records · Every Kit

LOG IT. STICK IT.
PROVE IT.

Every Adapt kit ships with an oil change sticker. Fill it in at the car, then log the service in My Garage — it builds a service history that follows the car.

  1. 01

    Order your kit

    Everything for the service in one box, matched to your chassis — oil change sticker included.

  2. 02

    Do the service, fill the sticker

    Date, mileage, next due. Stick it where you'll see it every time you get in.

  3. 03

    Log it in My Garage

    Pick your car, the service and the mileage. Thirty seconds from your phone — no codes to enter.

  4. 04

    Build the record

    Each log lands in My Garage as a service history structured for Torque Tag — and counts toward Logged-Service Rewards when they launch.

The sticker reminds you. My Garage remembers.Write the date, mileage and next service due at the car. Log it once and My Garage tracks it for you.

LOG A SERVICE

Create a free account to keep your service history.

  • Every service saved to your car, on any device
  • Next-due bars for oil, brake fluid, diff and more
  • Intervals that follow how you drive — daily, street or track
Create Free Account Log In

Free to join. Your history lives in My Garage, private to your account.

Coming Soon

GARAGE
ACADEMY

Built, Not Bought/Learn. Build. Share.

Garage Academy is Adapt's sister brand for hands-on learning — step-by-step course dossiers written from real shop and trackside work, so you can do the job yourself and do it right.

Every course is a numbered dossier — GA-001, GA-002 and on — with the difficulty, time, prerequisites, and tools stated before you start, and a badge when you finish.

Garage Academy launch emails only · unsubscribe anytime · Privacy Policy

Do it right the first time

Procedures written from real builds — including what went wrong and how it got fixed.

Know before you start

Difficulty, time, prerequisites, and tool list up front — no surprises halfway through a job.

Paired with your kit

Service dossiers line up with Adapt chassis pages, so the parts and the procedure come from the same spec.

Earn it, log it

Completion badges sit in your garage profile, right next to the service history they taught you to build.

GA-### Sample

Dossier format preview

CHASSIS FLUID SERVICE
Difficulty
Est. time
2–3 hrs
Prereqs
Jack stands, torque wrench
Badge
Fluids I

Illustrative layout only — course list and release dates announced at launch.

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