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Link-WRXLink (04) - WRX104X

$2,075.00
$2,075.00
$2,075.00

Want 48hr delivery? Be quick!

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Easy to install. Affordable. Reliable.

The Link G4X PlugIn ECU transforms your WRX into a precision-tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required.


Choose the Right Model – Pin Check Required!

The fastest and most reliable way to confirm you need the WRX104X is to check pins A1–A3 on the OEM connector:

  • Pins A1–A3 have wires → You need the WRX104X (this listing, 224-4000)
  • Pins A1–A3 are empty → You need the WRX107X.

WRX104X mostly covers 2004–2006; some late-2006 cars require the WRX107X, so this check is essential.


Vehicle Compatibility

  • Designed for WRX V10 EJ25 (2.5L) 2004–2007
  • Manual transmission only
  • Suits GD/GG chassis with electronic throttle
  • Not suitable for GR/GH/GE/GV hatchback or 3rd generation WRX

Model breakdown:
WRX104X → Mostly covers 2004–2006  
WRX107X → Mostly covers 2007 and some late 2006

 


Why Choose Link G4X?

  • Factory fit, motorsport power – installs in the OEM case with world-class tuning flexibility.
  • Plug & play – no wiring loom alterations for supported models.
  • Confidence & reliability – proven hardware and software, trusted by tuners worldwide.
  • Serious features – advanced boost control, antilag, launch, knock control & more.
Link-WRXLink (04) - WRX104X

$2,075.00

Does it come with a warranty?

Every Link ECU product is engineered to the highest standards and backed by our industry-leading Lifetime Warranty. This means your purchase is protected for as long as you own it — no time limits, no hidden clauses. We stand behind the quality, reliability, and performance of our products, so you can tune and drive with complete confidence. If a covered issue ever arises, we’ll make it right — that’s our promise for life.

What happens if I don't like it?

Our dedicated support team is here for you 24/7 to answer questions, troubleshoot issues, and make sure you get the most out of your purchase. If you ever feel a product isn’t right for you, we offer hassle-free returns at any time — no complicated policies, just straightforward, customer-first service.

How fast is shipping?

We ship anywhere in the U.S. with fast, reliable 2-day delivery — so you can get the performance parts you need without the wait. No matter where you are, your order is packed with care and on its way within 48 hours.

What's the returns policy?

We stand behind every product we sell. If for any reason you’re not completely satisfied, you can return your purchase at any time — no time limits, no hassle. Our 24/7 customer service team is here to answer questions, guide you through troubleshooting, or help you start a return whenever you need. Combined with our industry-leading Lifetime Warranty, you can shop with complete confidence knowing you’re protected before, during, and long after your purchase