OEM JDM STI 440cc side-feed injectors Impreza GC

Original Subaru JDM STI side-feed injectors, complete set of 4 pieces.

These OEM injectors are the well-known yellow JDM 440cc version, commonly found on GC8 STI Version 3 / Version 4 EJ20K setups.
European GC8 models usually came with 380cc injectors, which means these JDM injectors offer a clear upgrade in fuel capacity and tuning reserve.

Technical difference:
✔️ JDM STI injectors = 440cc
✔️ EU injectors = 380cc
✔️ Around 16% more fuel delivery
✔️ Better fuel safety margin under boost
✔️ More stable AFR at higher load

Why experienced Subaru owners choose 440cc:

When using:
higher boost
VF turbo upgrades
exhaust modifications
ECU remap
the 380cc injectors reach their limit much earlier.
The 440cc set gives noticeably more headroom and makes the setup feel more relaxed under load.

Practical benefit:
A classic OEM STI upgrade that keeps original Subaru quality while giving more tuning potential.