Fuel Injector Clinic 525cc High Impedance Injector Set (IS403-0525H) - 2005 - 2026 Ford Mustang GT, 2015 - 2020 Shelby GT350, 2020 Shelby GT500, 2012 - 2013 Boss 302 & 1999 - 2004 Cobra
The Fuel Injector Clinic IS403-0525H 525cc High Impedance Injector Set is an excellent upgrade for mildly to moderately modified Ford performance applications that demand greater fuel capacity without sacrificing drivability. Flowing 525cc/min, approximately 50 lb/hr, at 43.5 PSI (3 Bar), these saturated high impedance Ball & Seat injectors provide excellent idle quality, exceptional short pulse width control, and consistent fuel delivery for naturally aspirated and boosted street or track combinations. At 58 PSI, these injectors flow approximately 58 lb/hr, offering additional fuel capacity when used with higher base fuel pressure.
The IS403-0525H utilizes Fuel Injector Clinic's latest injector technology and includes PGTUSC8 injector pigtails for installation. If you prefer not to modify your factory wiring harness, optional PADPUtoJ8 Plug and Play adaptor harnesses are available separately. Plug and Play Ford ECU calibration data is also available directly from Fuel Injector Clinic to simplify tuning and deliver outstanding drivability.
Every injector set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology. Each injector is individually serial numbered and supplied with a detailed Data Match Sheet containing flow and latency information for the complete matched set. Fuel Injector Clinic tests every injector using CF-16B calibration fluid at 43.5 PSI (3 Bar) and 90 degrees Fahrenheit. All required O-rings for the listed factory applications are included, and every injector is backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects.
Features
- Complete set of eight 525cc/min fuel injectors
- Flows approximately 50 lb/hr at 43.5 PSI (3 Bar)
- Flows approximately 58 lb/hr at 58 PSI
- Saturated High Impedance Ball & Seat injector design
- Includes PGTUSC8 injector pigtails
- Optional PADPUtoJ8 Plug and Play adaptor harnesses available separately
- Excellent injector linearity and short pulse width control
- 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: IS403-0525H
- Injector Quantity: 8
- Flow Rate: 525cc/min
- Approximate Flow Rate: 50 lb/hr at 43.5 PSI
- Flow Rate at 58 PSI: 58 lb/hr
- Rated Fuel Pressure: 43.5 PSI (3 Bar)
- Injector Type: Saturated High Impedance Ball & Seat
- Included Wiring: PGTUSC8 injector pigtails
- Optional Plug and Play Adaptors: PADPUtoJ8
- Calibration Fluid: CF-16B
- Calibration Temperature: 90 degrees Fahrenheit
- Included: Eight matched injectors, factory application O-rings, Data Match Sheet, and PGTUSC8 pigtails
- Warranty: Lifetime Manufacturer Warranty
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 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
FAQs
Do these injectors require wiring modifications?
Yes. The IS403-0525H includes PGTUSC8 injector pigtails for wiring conversion. If you prefer not to modify your factory harness, optional PADPUtoJ8 Plug and Play adaptor harnesses are available separately.
What is Fuel Injector Clinic Data Match Technology?
Each injector is individually tested, serial numbered, and flow matched as part of a complete set. The included Data Match Sheet provides detailed flow and latency information to simplify tuning and maximize fuel delivery accuracy.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for genuine Fuel Injector Clinic injectors and premium fuel system components. Whether you're upgrading a naturally aspirated Mustang GT, a supercharged Shelby, or a Terminator Cobra, our experienced team can help you select the right injector package for your horsepower goals and fuel requirements.
Phone: 1-855-827-7223
Email: sales@beefcakeracing.com
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
