Fuel Injector Clinic 1200cc High Impedance Fuel Injector Set for LS3, LS7, LSA, L76, L92 & L99 Engines (IS303-1200H)
Upgrade the fueling capacity of your GM Gen IV LS engine with the Fuel Injector Clinic IS303-1200H injector set. Engineered for LS3, LS7, LSA, L76, L92, and L99 applications, this complete set of eight saturated high impedance fuel injectors is designed to support serious naturally aspirated, supercharged, and turbocharged builds while maintaining excellent idle quality and street manners. Utilizing the latest injector technology, these injectors provide outstanding linearity and superior short pulse width control for precise fueling throughout the RPM range.
Each injector set is dynamically matched using Fuel Injector Clinic's proprietary Data Match Technology for exceptional cylinder-to-cylinder consistency. Every injector is individually serial numbered and includes a comprehensive Data Match Sheet with detailed flow matching and latency information to simplify ECU calibration. This kit includes PGTJETR8 injector pigtails, while optional PADPJtoU8 Plug and Play adapters are available separately for installers who prefer a no-cut installation. Plug and Play GM ECU calibration data is also available from Fuel Injector Clinic. This injector set replaces the previous IS303-1100H part number.
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Part Number: IS303-1200H
- Previous Part Number: IS303-1100H
- Application: LS3, LS7, LSA, L76, L92, and L99 Engines
- Injector Quantity: Set of 8
- Injector Type: Saturated High Impedance (High-Z)
- Flow Rate: 1200 cc/min (110 lb/hr) @ 43.5 PSI (3 Bar)
- Flow Rate: 1350 cc/min (130 lb/hr) @ 58 PSI (4 Bar)
- Installation: Wiring conversion required
- Included: PGTJETR8 injector pigtails
- Optional Accessory: PADPJtoU8 Plug and Play adapters available separately
- Matching Technology: Fuel Injector Clinic Data Match Technology
- Flow Testing: Tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- ECU Support: Plug and Play GM ECU calibration data available from Fuel Injector Clinic
- Included: Comprehensive Data Match Sheet
- Included: All required O-rings for the factory application
- Warranty: Lifetime manufacturer warranty
Features
- Designed for LS3, LS7, LSA, L76, L92, and L99 engine applications.
- Complete set of eight saturated high impedance fuel injectors.
- 1200 cc/min (110 lb/hr) flow rate at 43.5 PSI (3 Bar).
- 1350 cc/min (130 lb/hr) flow rate at the OE 58 PSI (4 Bar) fuel pressure.
- Utilizes Fuel Injector Clinic's latest injector technology.
- Matched using proprietary Data Match Technology.
- Each injector is individually serial numbered.
- Includes a comprehensive Data Match Sheet with flow matching and latency values.
- Excellent short pulse width control for outstanding drivability.
- Plug and Play GM ECU calibration data available.
- Includes PGTJETR8 injector pigtails.
- Optional PADPJtoU8 Plug and Play adapters available separately.
- Includes all required O-rings for factory installation.
- Replaces previous Fuel Injector Clinic part number IS303-1100H.
- Backed by Fuel Injector Clinic's lifetime manufacturer warranty.
Fitment
LS3 Engines
LS7 Engines
LSA Engines
L76 Engines
L92 Engines
L99 Engines
FAQs
Do these injectors require wiring modifications?
Yes. The IS303-1200H includes PGTJETR8 injector pigtails for wiring conversion. Optional PADPJtoU8 Plug and Play adapters are available separately for installers who prefer not to cut or solder the factory wiring harness.
What replaced the IS303-1100H injector set?
The IS303-1200H is the current replacement for the previous IS303-1100H and features Fuel Injector Clinic's latest injector technology along with proprietary Data Match Technology for outstanding tuning accuracy and drivability.
Why Buy From Beefcake Racing?
Beefcake Racing is an Authorized Fuel Injector Clinic dealer, offering genuine FIC fuel system components backed by expert technical support, competitive pricing, and fast shipping. Whether you're upgrading an LS3 street car or building a high-horsepower LSA-powered race vehicle, our experienced team can help you select the proper injectors and supporting fuel system components.
Need assistance choosing the right injector size for your combination? Contact our knowledgeable team before placing your order.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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