Coil Conversion Kits
Still running a 90s coil pack?
Modern spark
for your GC8.
Swap the factory single coil pack for four NGK U5057 coils on our plug-and-play loom. One coil per cylinder. No cutting, no splicing, no ECU mods.
Roo Racing x NGK
Genuine NGK U5057 coilsBuilt-in igniters, one per cylinder
100% plug & playFactory connectors, nothing cut
Built & tested in NSWMotorsport-grade connectors
99 conversions shippedKits & looms, last 12 months
A coil pack fitted up to 32 years ago is a common culprit. Here's the fix.
Step 1 — pick your build date
Find your kit in 10 seconds.
Go by the build date on your compliance plate, not the year on the rego. Not sure? Send us your VIN and we'll confirm it before you order.
Step 2 — choose your setup · GC8 WRX & STI · Forester GT 08/98 – 09/00
Recommended
Full Coil-On-Plug Kit — Roo Racing x NGK
Fits GC8 WRX & STI built 08/1998 – 09/2000 and Forester GT built 07/1998 – 08/2000
- Roo Racing plug-and-play conversion loom
- 4 × NGK U5057 ignition coils
- 4 × NGK BCPR7ES spark plugs — free
- Fitting hardware + instructions
In stock · dispatched from Campbelltown NSW
Roo Racing COP Loom — GC8 98–00 & Forester GT
Fits GC8 WRX & STI built 08/1998 – 09/2000 and Forester GT built 07/1998 – 08/2000
- Plugs into the factory connectors
- No cutting, splicing or soldering
- Coils and plugs not included
In stock · dispatched from Campbelltown NSW
Why coil-on-plug
Bin the weak link.
One ageing coil pack
- One unit feeds all four cylinders through HT leads
- Original part is now 26–32 years old
- Heat, boost and age are what find it out
- Genuine replacement is still a 90s design
One NGK coil per cylinder
- Each coil sits directly on its plug, no HT leads
- Stronger, more consistent spark at high boost and RPM
- Smoother running and sharper response
- Runs on stock or tuned engines, no ECU changes
Fits in an arvo
Three steps. Zero wire cutters.
-
1
Pull the factory coil packUnplug it and remove it with the HT leads.
-
2
Plug in the Roo Racing loomIt clips straight into your factory connectors.
-
3
Fit plugs and coils, then fire it upFresh NGK plugs in, one coil per cylinder, done.
Basic hand tools · Step-by-step instructions in the box
Full kit vs loom only
Which one's for you?
| Feature | Full kit | Loom only |
|---|---|---|
| Price | $845 | $120 – $164.50 |
| Conversion loom | Included | Included |
| 4 × NGK U5057 coils | Included | Supply your own |
| 4 × NGK spark plugs | Included free | Supply your own |
| Shipping | Free | Standard rates |
| Best for | Sorting the whole ignition in one box | You've already got compatible coils |
From the Roo Racing family
99 EJs sorted
this year.
Coil-on-plug kits and looms shipped in the last 12 months, to daily drivers, track cars and everything in between.
Great quality product.
“Great quality product, one of the easiest installation I have done. Good support - priced reasonably win win!”
Thanks Elliot and Roo Racing!
“Elliot was knowledgeable about the products, confirmed stock levels and then followed up with fast shipping. Products are excellent quality. We'll definitely use Roo Racing in the future to optimise our Subarus. Thanks Elliot!”
A curated offering for Subaru enthusiasts!
“The customer service offered to make sure you're getting the right and best thing for your Subaru, at a great price, is unparalleled.”
Before you buy
Good questions.
Which kit fits my car?
Do I need a tune?
Is it really plug and play?
Does it fit the STI and Forester GT?
Shipping and returns?
No cutting. No splicing. No half-finished setups.
Give your EJ the spark it deserves.
Know your build date? Grab your kit now. Not 100% sure it'll fit? Send us your VIN and Elliot will confirm the right kit before you spend a cent.
Rather email? info@rooracing.au
VIN fitment check
We'll match your car to the right kit or loom and email you back.
Elliot will check your VIN and email you back with the right kit.
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