Fuel Injector Clinic 1000cc High Impedance Injector Set (IS403-1000H) - 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 IS403-1000H 1000cc High Impedance Injector Set is an outstanding choice for high-performance Ford builds that demand increased fuel delivery while retaining excellent drivability and tuning characteristics. Flowing 1000cc/min, approximately 95 lb/hr, at 43.5 PSI or 3 Bar, these saturated high impedance Ball & Seat injectors provide exceptional idle quality, repeatable short pulse width control, and the consistency required for serious naturally aspirated, supercharged, and turbocharged combinations running gasoline or E85.
Designed as a true drop-in injector for both size and factory electrical connector, the IS403-1000H installs without wiring modifications or injector adaptor harnesses. Plug and Play Ford ECU calibration data is available directly from Fuel Injector Clinic, allowing tuners to establish accurate injector characterization and reduce calibration time while maximizing drivability.
Each injector set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology. Every injector is individually serial numbered and supplied with a comprehensive Data Match Sheet containing detailed flow and latency values. Flow testing is performed using CF-16B calibration fluid at 43.5 PSI (3 Bar) and 90 degrees Fahrenheit. The injectors include all factory-application O-rings and are backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects.
Features
- Complete set of eight 1000cc/min high impedance fuel injectors
- Flows approximately 95 lb/hr at 43.5 PSI (3 Bar)
- Saturated High Impedance Ball & Seat injector design
- Drop-in fitment with factory-style electrical connectors
- No wiring modifications or adaptor harnesses required
- Excellent linearity and short pulse width repeatability
- Outstanding idle quality and street drivability
- Fuel Injector Clinic proprietary Data Match Technology
- Each injector individually serial numbered
- Includes detailed Data Match Sheet with flow and latency values
- Flow tested using CF-16B calibration fluid at 90 degrees Fahrenheit
- Plug and Play Ford ECU data available from Fuel Injector Clinic
- Includes all required factory application O-rings
- Lifetime warranty against manufacturing defects
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Manufacturer Part Number: IS403-1000H
- Injector Quantity: 8
- Flow Rate: 1000cc/min
- Approximate Flow Rate: 95 lb/hr
- Rated Fuel Pressure: 43.5 PSI (3 Bar)
- Injector Type: Saturated High Impedance Ball & Seat
- Electrical Connector: Factory-style
- Plug Conversion Required: No
- Injector Height: 64mm
- Top O-ring: 14mm
- Bottom O-ring Outside Diameter: 14mm
- Calibration Fluid: CF-16B
- Calibration Temperature: 90 degrees Fahrenheit
- Warranty: Lifetime Manufacturer Warranty
Horsepower Supported at 90 Percent Duty Cycle
- E85 at 43.5 PSI, Naturally Aspirated: 896.70 WHP
- E85 at 43.5 PSI, Supercharged: 815.18 WHP
- E85 at 43.5 PSI, Turbocharged: 747.25 WHP
- E85 at 58 PSI, Naturally Aspirated: 1,035.69 WHP
- E85 at 58 PSI, Supercharged: 941.54 WHP
- E85 at 58 PSI, Turbocharged: 863.08 WHP
- Gasoline at 43.5 PSI, Naturally Aspirated: 1,165.71 WHP
- Gasoline at 43.5 PSI, Supercharged: 1,059.74 WHP
- Gasoline at 43.5 PSI, Turbocharged: 971.43 WHP
- Gasoline at 58 PSI, Naturally Aspirated: 1,346.40 WHP
- Gasoline at 58 PSI, Supercharged: 1,224.00 WHP
- Gasoline at 58 PSI, Turbocharged: 1,122.00 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 IS403-1000H require wiring modifications?
No. The IS403-1000H is a true drop-in injector that uses the factory size and electrical connector, eliminating the need for pigtails, adaptor harnesses, or wiring changes.
What information is included with the injector set?
Each injector set includes a Data Match Sheet with individual flow and latency values, factory application O-rings, and is backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for genuine Fuel Injector Clinic fuel system components. Whether you're building a naturally aspirated Coyote, boosted Shelby, turbocharged Cobra, or high-horsepower F-150, our experienced team can help you select the proper injector package for your horsepower goals and fuel choice.
Phone: 1-855-827-7223
Email: sales@beefcakeracing.com
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