Hawks Motorsports offers our clients this FIC44NEWTRUCK 5.3L / 6.0L / 8.1L GM Truck 50 lb/hr @ 4 Bar Flow Matched Fuel Injectors - Set of 8 - GM 12613412 - Fuel Injector Connection designed for GM truck and SUV enthusiasts looking to upgrade or replace their factory fuel injectors with a professionally flow matched, high-quality injector set. These brand-new GM 12613412 injectors are matched and balanced by Fuel Injector Connection (FIC) to provide consistent fuel delivery, improved drivability, and reliable performance for naturally aspirated and forced induction applications.

Flow rated at 50 lb/hr at 4 Bar (58 psi) and 44 lb/hr at 3 Bar (43.5 psi), these injectors are ideal for higher horsepower street and performance builds requiring additional fuel capacity over factory injectors. Each injector is professionally flow matched to ensure balanced fuel delivery across all eight cylinders, helping improve idle quality, throttle response, and overall engine performance.

These injectors utilize the USCAR (EV6) electrical connector and feature the OEM truck injector height, making them suitable for many GM truck and SUV applications equipped with 5.3L, 6.0L, and 8.1L engines. They are also commonly used in LS swap projects utilizing truck-style intake manifolds and fuel rails.

Key Features:

• SKU: FIC44NEWTRUCK
• Fuel Injector Connection flow matched injector set
• GM Part Number: 12613412
• Brand-new OEM-style injectors
• 50 lb/hr @ 4 Bar (58 psi)
• 44 lb/hr @ 3 Bar (43.5 psi)
• Sold as a set of 8 injectors
• Professionally flow matched and balanced
• USCAR (EV6) electrical connector
• Truck height injector body (53 mm)
• Compatible with many GM truck fuel rails
• Suitable for naturally aspirated and boosted applications
• Includes injector flow matching
• Manufactured for consistent fuel delivery and improved drivability

Fitment Applications:

Compatible with many GM Gen III and Gen IV truck applications utilizing truck-height EV6/USCAR injectors.

Chevrolet Silverado

• 1999-2013 Chevrolet Silverado 1500
• 1999-2013 Chevrolet Silverado 2500
• 1999-2013 Chevrolet Silverado 2500HD
• 1999-2013 Chevrolet Silverado 3500

Chevrolet Avalanche

• 2002-2013 Chevrolet Avalanche

Chevrolet Suburban

• 2000-2013 Chevrolet Suburban

Chevrolet Tahoe

• 2000-2013 Chevrolet Tahoe

Chevrolet Express

• Select 5.3L, 6.0L, and 8.1L applications

GMC Sierra

• 1999-2013 GMC Sierra 1500
• 1999-2013 GMC Sierra 2500
• 1999-2013 GMC Sierra 3500

GMC Yukon / Yukon XL

• 2000-2013 GMC Yukon
• 2000-2013 GMC Yukon XL

Engine Compatibility

• 4.8L V8
• 5.3L V8
• 6.0L V8
• 8.1L V8
• LQ4
• LQ9
• LQ8
• LY6
• L96
• L92
• LM7
• L59
• LR4
• Custom LS swap applications utilizing truck-height injectors

Verify fitment before ordering, especially when using modified vehicles, aftermarket fuel rails, custom intake manifolds, or aftermarket engine management systems.

Installation Notes:

• Verify injector height before ordering.
• Confirm EV6/USCAR electrical connector compatibility.
• Lubricate injector O-rings before installation.
• Inspect injector bores and fuel rail seals before assembly.
• Verify fuel pressure after installation.
• Check for leaks before operating the engine.
• ECU recalibration may be required depending on engine modifications.
• Injector characterization data should be used when tuning aftermarket engine management systems.
• Professional installation and tuning are recommended for modified applications.