Injector Dynamics ID1050-XDS Top-Feed Conversion Kit with Dual Billet Fuel Rails for 2004–2006 Subaru STI (Set of 4)
This Injector Dynamics top-feed conversion kit, manufacturer part number 1050.18.01.48.14.4, is listed specifically for the 2004–2006 Subaru STI. It converts the factory side-feed arrangement to top-feed port fuel injection (PFI). The kit includes four ID1050-XDS injectors, dual billet fuel rails, and two sets of 2x8 lower O-rings. This is a different configuration from the 2007+ STI application.
Specifications
- Nominal flow rate: 1065 cc/min at 3.0 bar (43.5 psi), rated with gasoline at 52°C (125°F)
- Maximum differential fuel pressure: 10.0 bar (145.0 psi)
- Injector body length: 48 mm
- Upper O-ring: 14 mm
- Injection architecture: top-feed port fuel injection (PFI) conversion
- Electrical: high impedance; USCAR connector; new mating connector supplied by Injector Dynamics
- Fuel compatibility per Injector Dynamics: compatible with all known fuels
Included in This Kit
- Four (4) ID1050-XDS injectors
- Dual billet fuel rails
- Two sets of 2x8 lower O-rings
Fitment
Listed by Injector Dynamics under part number 1050.18.01.48.14.4 for the 2004–2006 Subaru STI side-feed-to-top-feed conversion. Verify compatibility using the exact manufacturer part number before ordering.
Additional Plumbing Required
The separate conversion line/plumbing kit is not included in this SKU. Injector Dynamics documents the AN lines, fittings, hose, clamps, series rail plumbing, and relocation of the factory fuel-pressure regulator required for the conversion. Confirm all required plumbing components before installation.
Installation & Calibration
Professional installation and an application-appropriate ECU calibration using Injector Dynamics characterization data are required.
Check applicable federal, state, and local emissions regulations before installing this part on a street-driven vehicle.