Fuel Injector Clinic 1650cc High Impedance Fuel Injector Set (1999-2006 GM 4.8L / 5.3L / 6.0L Truck Engines) - IS304-1650H
When your GM truck build demands serious fuel delivery without sacrificing drivability, the Fuel Injector Clinic IS304-1650H High Impedance Fuel Injector Set delivers. Designed specifically for 1999-2006 GM 4.8L, 5.3L, and 6.0L truck engines, this complete set of eight injectors flows 1650cc/min (160 lb/hr) at 43.5 PSI (3 Bar) and 1900cc/min (180 lb/hr) at the factory 58 PSI (4 Bar) fuel pressure. These injectors provide the fuel capacity required for high-horsepower turbocharged, supercharged, and E85-powered combinations while maintaining exceptional idle quality and street manners.
This injector set features easy-to-install, drop-in fitment with the factory style connector. No plug conversion is required. Built using Fuel Injector Clinic's latest high impedance injector technology, the IS304-1650H offers excellent linearity, outstanding short pulse width repeatability, and simplified tuning. Plug and Play GM ECU calibration data is available from Fuel Injector Clinic for supported GM engine management systems.
The IS304-1650H is the largest high impedance injector in the Fuel Injector Clinic lineup that is compatible with all race fuels. Its stainless alloy valve construction allows use with pump gasoline, E85, VP Import, FTW, Q16, and other MTBE oxygenated race fuels while delivering excellent idle performance in street-driven vehicles and enough fuel capacity for serious horsepower.
Each injector set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology. Every injector is individually serial numbered and includes a detailed Data Match Sheet containing injector-specific flow and latency values for highly accurate ECU calibration.
Quick Specs
- Part Number: IS304-1650H
- Application: 1999-2006 GM 4.8L, 5.3L, and 6.0L Truck Engines
- Injector Quantity: 8
- Injector Flow Rate: 1650cc/min (160 lb/hr) at 43.5 PSI (3 Bar)
- Injector Flow Rate: 1900cc/min (180 lb/hr) at OE 58 PSI (4 Bar)
- Injector Type: High Impedance (Saturated)
- Drop-in fitment with factory style connector
- No plug conversion required
- Stainless alloy valve construction
- Compatible with gasoline, E85, VP Import, FTW, Q16, and other MTBE oxygenated race fuels
- Fuel Injector Clinic Data Match Technology
- Each injector individually serial numbered
- Detailed Data Match Sheet included
- Plug and Play GM ECU calibration data available
- Flow tested at 43.5 PSI (3 Bar)
- Tested using CF-16B calibration fluid at 90 degrees Fahrenheit
- Application-specific O-rings included
- Lifetime warranty against manufacturing defects
Features
- Designed specifically for 1999-2006 GM 4.8L, 5.3L, and 6.0L truck engines
- Flows 1650cc/min (160 lb/hr) at 43.5 PSI and 1900cc/min (180 lb/hr) at OE 58 PSI fuel pressure
- Easy drop-in installation using the factory style connector
- No wiring modifications or plug conversion required
- Largest Fuel Injector Clinic high impedance injector compatible with all race fuels
- Compatible with gasoline, E85, VP Import, FTW, Q16, and other MTBE oxygenated fuels
- Stainless alloy valve construction for maximum fuel compatibility
- Excellent idle quality and drivability despite extremely high flow capacity
- Fuel Injector Clinic Data Match Technology ensures outstanding injector-to-injector consistency
- Each injector is individually serial numbered with an included Data Match Sheet
- Outstanding short pulse width control for easier tuning
- Plug and Play GM ECU calibration data available
- Application-specific O-rings included
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Fitment
- 1999 GM 4.8L Truck Engine
- 2000 GM 4.8L Truck Engine
- 2001 GM 4.8L Truck Engine
- 2002 GM 4.8L Truck Engine
- 2003 GM 4.8L Truck Engine
- 2004 GM 4.8L Truck Engine
- 2005 GM 4.8L Truck Engine
- 2006 GM 4.8L Truck Engine
- 1999 GM 5.3L Truck Engine
- 2000 GM 5.3L Truck Engine
- 2001 GM 5.3L Truck Engine
- 2002 GM 5.3L Truck Engine
- 2003 GM 5.3L Truck Engine
- 2004 GM 5.3L Truck Engine
- 2005 GM 5.3L Truck Engine
- 2006 GM 5.3L Truck Engine
- 1999 GM 6.0L Truck Engine
- 2000 GM 6.0L Truck Engine
- 2001 GM 6.0L Truck Engine
- 2002 GM 6.0L Truck Engine
- 2003 GM 6.0L Truck Engine
- 2004 GM 6.0L Truck Engine
- 2005 GM 6.0L Truck Engine
- 2006 GM 6.0L Truck Engine
FAQs
Do these injectors require a wiring harness modification?
No. The IS304-1650H features true drop-in fitment with the factory style connector, so no plug conversion or wiring modifications are required.
What fuels are these injectors compatible with?
The stainless alloy valve construction makes these injectors compatible with pump gasoline, E85, VP Import, FTW, Q16, and other MTBE oxygenated race fuels while maintaining excellent idle quality and drivability.
Why Buy From Beefcake Racing?
Beefcake Racing is your trusted source for genuine Fuel Injector Clinic products. We offer competitive pricing, fast shipping, and expert technical support to help you choose the ideal injectors and supporting fuel system components for your GM truck performance build.
Questions about injector sizing or installation?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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