1650cc FIC Fuel Injector Clinic Injector LS3 LSA LS7 L76 L92 L99 IS303

Fuel Injector Clinic IS303-1650H 1650cc Injectors LS3 LS7 L99 L76 High Impedance Set of 8

Brand: Fuel Injector Clinic (FIC)
Manufacturer Part Number: IS303-1650H
Flow Rate: 1650cc/min @ 43.5 PSI (3 Bar)
Impedance: High Impedance (High-Z / Saturated)
Connector Style: EV6 / USCAR
Injector Type: Ball & Seat
Quantity: Set of 8 Injectors
Condition: Brand New

Product Description

For sale is a brand new Fuel Injector Clinic (FIC) IS303-1650H injector set, engineered for GM LS3-height fuel rail applications. These 1650cc high-impedance fuel injectors are designed for high-horsepower turbocharged, supercharged, E85, and race fuel builds, delivering massive fuel capacity while maintaining excellent idle quality and drivability.

Each injector is precision matched using Fuel Injector Clinic’s Data Match Technology, ensuring consistent fueling across all cylinders. Injectors are individually flow-tested, serialized, and include a Data Match Sheet with detailed injector latency and flow characterization for accurate ECU tuning.

Flow tested at 43.5 PSI (3 Bar) at 90°F using CF-16B calibration fluid, these injectors offer strong high-load fueling, excellent short-pulse control, and stable low-RPM operation. Built with stainless internal components for long-term durability and compatibility with pump gas, E85, flex fuel, and race fuels.

Key Features

✔ 1650cc/min High-Output Flow Rate
✔ High Impedance (Plug-and-Tune Friendly)
✔ Precision Flow-Matched Set (±1%)
✔ Excellent Idle & Low-Pulse Performance
✔ Gasoline, E85 & Race Fuel Compatible
✔ Includes All Required O-Rings
✔ Individually Flow-Tested & Serialized
✔ Lifetime Manufacturer Warranty
✔ Brand New — Not Remanufactured