Injector Dynamics 1050.18.01.48.14.4Top-Feed Fuel Injectors 1050x for Subaru S

Vehicle Fitment

• 2004-2006 Subaru Impreza WRX STI (Turbo, top-feed conversion required)
• Universal compatibility with engines requiring short-body 48 mm injectors with 14 mm O-rings when used with top-feed conversion kit

Features

• High-flow Injector Dynamics ID1050-XDS motorsport injector design
• Top-feed conversion kit included for Subaru STi 04-06 applications
• Corrosion-resistant internals compatible with gasoline and ethanol fuels
• Improved internal flow path boosts output without sacrificing low-flow control
• Stronger magnetic circuit ensures stable operation up to high pressures
• Replaceable inlet filters extend injector lifespan
• USCAR electrical connectors for wide harness compatibility
• Precision matched with Dual Slope Dynamic Matching (XDS) for better cylinder balance

Specifications

• Brand: Injector Dynamics
• Part Number: 1050.18.01.48.14.4
• Series: ID1050-XDS
• Nominal Flow Rate: 1065 cc/min @ 3.0 bar (stock injectors design) :contentReference[oaicite:0]{index=0}
• Injector Length: 48 mm :contentReference[oaicite:1]{index=1}
• Top Adapter Size: 14 mm for top-feed fuel rail :contentReference[oaicite:2]{index=2}
• O-Ring Size: 14 mm upper & lower :contentReference[oaicite:3]{index=3}
• Maximum Differential Fuel Pressure: 10 bar (145 psi) :contentReference[oaicite:4]{index=4}
• Electrical Connector: USCAR :contentReference[oaicite:5]{index=5}

Included Components

• 4x Injector Dynamics ID1050-XDS injectors (48 mm, 14 mm top & bottom)
• Top-feed conversion hardware
• Dual billet fuel rails
• 2x 2x8 lower O-rings for installation

Product Description

The Injector Dynamics 1050.18.01.48.14.4 ID1050-XDS fuel injector set pairs high-flow performance with a top-feed conversion kit designed for 2004-2006 Subaru Impreza WRX STI turbo engines. These injectors deliver approximately 1065 cc/min of fuel flow and leverage advanced XDS matching technology to provide consistent fuel delivery across all cylinders - enhancing throttle response, drivability, and power response during high-load conditions.

Constructed with corrosion-resistant internals and USCAR electrical connectors, this set supports a wide range of high-performance fuels, including ethanol blends. The included top-feed conversion components and dual billet fuel rails ensure a direct fit and improved fuel delivery for Subaru STI applications. Always verify physical rail and harness compatibility before installation to ensure proper fitment.