Fuel Injector Clinic 1650cc High Impedance Injector Set (IS403-1650H) - 2005 - 2026 Ford Mustang GT, Dark Horse, Shelby GT350, GT500, Boss 302, 1999 - 2004 Cobra & 2011 - 2026 F-150 5.0L
The Fuel Injector Clinic IS403-1650H 1650cc High Impedance Injector Set gives serious Ford performance builds the fuel capacity needed for high-horsepower gasoline, E85, and race-fuel combinations without giving up the idle quality and drivability expected from a modern injector. Rated at 1650cc/min, approximately 160 lb/hr, at 43.5 PSI or 3 Bar, this set of eight injectors delivers exceptional linearity, precise short pulse width control, and repeatable fueling across a wide operating range.
This injector set features easy-to-install, drop-in fitment with the factory-style connector, so no injector plug conversion, cutting, soldering, or plug adaptors are required. Fuel Injector Clinic uses a stainless alloy valve construction that allows the 1650cc injector to operate with pump gasoline, E85, VP Q16, VP Import, FTW, and other MTBE oxygenated race fuels. Plug-and-play Ford ECU data is also available from Fuel Injector Clinic to help tuners establish an accurate calibration.
Every IS403-1650H injector set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology. Each injector is individually serial numbered, and the included Data Match Sheet provides detailed flow and latency information for the complete set. The injectors are flow tested and rated using CF-16B calibration fluid at a fuel temperature of 90 degrees Fahrenheit and 43.5 PSI of pressure. Factory-application O-rings are included, and every injector is covered by Fuel Injector Clinic's lifetime warranty against failure caused by defects in original manufacture.
Features
- Complete set of eight 1650cc/min high impedance fuel injectors
- Flows approximately 160 lb/hr at 43.5 PSI or 3 Bar
- Saturated, high impedance Ball & Seat injector design
- Drop-in fitment with factory-style electrical connectors
- No plug conversion, cutting, soldering, or injector adaptors required
- Excellent linearity and short pulse width repeatability
- Strong idle quality and part-throttle drivability for street-driven performance vehicles
- Large fuel capacity for high-horsepower gasoline and E85 applications
- Stainless alloy valve construction
- Compatible with pump gasoline, E85, VP Q16, VP Import, FTW, and other MTBE oxygenated race fuels
- Fuel Injector Clinic proprietary Data Match Technology
- Each injector is individually serial numbered
- Includes a detailed Data Match Sheet with flow and latency information
- Flow tested with CF-16B calibration fluid at 90 degrees Fahrenheit
- Plug-and-play Ford ECU data available from Fuel Injector Clinic
- Includes the O-rings required for the listed factory applications
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Manufacturer Part Number: IS403-1650H
- Injector Quantity: 8
- Flow Rate: 1650cc/min
- Approximate Flow Rate: 160 lb/hr
- Rated Fuel Pressure: 43.5 PSI or 3 Bar
- Injector Impedance: High-Z / High Impedance
- Injector Type: Saturated Ball & Seat
- Electrical Connector: Factory-style connector
- Plug Conversion Required: No
- Injector Height: 64mm
- Top O-ring: 14mm
- Bottom O-ring Outside Diameter: 14mm
- Calibration Fluid: CF-16B
- Calibration Fuel Temperature: 90 degrees Fahrenheit
- Fuel Compatibility: Pump gasoline, E85, VP Q16, VP Import, FTW, and other MTBE oxygenated race fuels
- Included: Eight injectors, factory-application O-rings, and Data Match Sheet
- Warranty: Lifetime warranty against defects in original manufacture
Horsepower Supported at 90 Percent Duty Cycle
- E85 at 43.5 PSI, Naturally Aspirated: 1,480.46 WHP
- E85 at 43.5 PSI, Supercharged: 1,345.87 WHP
- E85 at 43.5 PSI, Turbocharged: 1,233.71 WHP
- E85 at 58 PSI, Naturally Aspirated: 1,709.93 WHP
- E85 at 58 PSI, Supercharged: 1,554.48 WHP
- E85 at 58 PSI, Turbocharged: 1,424.94 WHP
- Gasoline at 43.5 PSI, Naturally Aspirated: 1,924.59 WHP
- Gasoline at 43.5 PSI, Supercharged: 1,749.63 WHP
- Gasoline at 43.5 PSI, Turbocharged: 1,603.83 WHP
- Gasoline at 58 PSI, Naturally Aspirated: 2,222.91 WHP
- Gasoline at 58 PSI, Supercharged: 2,020.82 WHP
- Gasoline at 58 PSI, Turbocharged: 1,852.42 WHP
Fitment
Ford Mustang GT
- 2005 Ford Mustang GT
- 2006 Ford Mustang GT
- 2007 Ford Mustang GT
- 2008 Ford Mustang GT
- 2009 Ford Mustang GT
- 2010 Ford Mustang GT
- 2011 Ford Mustang GT
- 2012 Ford Mustang GT
- 2013 Ford Mustang GT
- 2014 Ford Mustang GT
- 2015 Ford Mustang GT
- 2016 Ford Mustang GT
- 2017 Ford Mustang GT
- 2018 Ford Mustang GT
- 2019 Ford Mustang GT
- 2020 Ford Mustang GT
- 2021 Ford Mustang GT
- 2022 Ford Mustang GT
- 2023 Ford Mustang GT
- 2024 Ford Mustang GT
- 2025 Ford Mustang GT
- 2026 Ford Mustang GT
Ford Mustang Dark Horse
- 2024 Ford Mustang Dark Horse
- 2025 Ford Mustang Dark Horse
- 2026 Ford Mustang Dark Horse
Ford Mustang Shelby GT350
- 2015 Ford Mustang Shelby GT350
- 2016 Ford Mustang Shelby GT350
- 2017 Ford Mustang Shelby GT350
- 2018 Ford Mustang Shelby GT350
- 2019 Ford Mustang Shelby GT350
- 2020 Ford Mustang Shelby GT350
Ford Mustang Shelby GT500
- 2020 Ford Mustang Shelby GT500
Ford Mustang Boss 302
- 2012 Ford Mustang Boss 302
- 2013 Ford Mustang Boss 302
Ford Mustang Cobra
- 1999 Ford Mustang Cobra
- 2000 Ford Mustang Cobra
- 2001 Ford Mustang Cobra
- 2002 Ford Mustang Cobra
- 2003 Ford Mustang Cobra
- 2004 Ford Mustang Cobra
Ford F-150 5.0L
- 2011 Ford F-150 5.0L
- 2012 Ford F-150 5.0L
- 2013 Ford F-150 5.0L
- 2014 Ford F-150 5.0L
- 2015 Ford F-150 5.0L
- 2016 Ford F-150 5.0L
- 2017 Ford F-150 5.0L
- 2018 Ford F-150 5.0L
- 2019 Ford F-150 5.0L
- 2020 Ford F-150 5.0L
- 2021 Ford F-150 5.0L
- 2022 Ford F-150 5.0L
- 2023 Ford F-150 5.0L
- 2024 Ford F-150 5.0L
- 2025 Ford F-150 5.0L
- 2026 Ford F-150 5.0L
FAQs
Does the IS403-1650H injector set require a plug conversion?
No. This injector set uses the factory-style electrical connector and is designed for drop-in installation on the listed applications. No cutting, soldering, pigtails, or plug-and-play injector adaptors are required.
Can the FIC 1650cc injectors be used with Q16, E85, and other race fuels?
Yes. The stainless alloy valve construction allows these injectors to be used with pump gasoline, E85, VP Q16, VP Import, FTW, and other MTBE oxygenated race fuels. Always follow Fuel Injector Clinic's fuel-system care and storage recommendations for the fuel being used.
Why Buy from Beefcake Racing?
Beefcake Racing is your source for genuine Fuel Injector Clinic injectors and supporting fuel-system components for Ford street, strip, and race builds. Our experienced team understands high-horsepower Mustang and F-150 combinations and can help you select the right injectors for your fuel, power level, and engine setup.
Phone: 1-855-827-7223
Email: sales@beefcakeracing.com
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