Zcargel 4PCS Fuel Injector Pigtail Harness Connectors with Heat Shrink Butt Connectors, Replace OE 19368140 PT3739, for Chevy GMC L5P 6.6L Diesel 2017-2024, Replacement Wiring Harness Repair Kit

Maintaining a reliable electrical connection between the ECU and the injectors is critical for proper fuel system operation, especially in modern diesel engines. This 4-piece fuel injector pigtail harness set is engineered as a direct replacement for Chevy GMC L5P 6.6L Diesel models from 2017 to 2024, ensuring OE-level compatibility and dependable repair performance. Replacing OE part numbers 19368140 and PT3739, this kit restores secure injector connectivity and stable engine function.

Over time, factory injector connectors can become brittle, corroded, or cracked due to constant heat, vibration, and exposure to contaminants. Damaged plugs often lead to misfires, rough idling, loss of power, or illuminated check engine lights. By replacing worn connectors with these pigtail harnesses, you restore accurate injector communication, stable fuel delivery, and consistent engine performance.

The connectors are constructed from reinforced plastic housings with silicone insulation for heat resistance and long-term durability. Each terminal is sealed to prevent moisture, oil, and dust intrusion, which are common causes of electrical failure in the engine bay. This rugged construction ensures reliable conductivity, even under extreme operating conditions.

Designed to follow OE specifications, the connectors feature 12-pin molded housings and precise locking tabs for a secure snap-fit installation. They connect directly to the fuel injectors and integrate seamlessly with the main harness. Installation is straightforward: simply cut away the damaged connector, strip the wires, and attach the replacement using the included heat shrink butt connectors for a solder-ready or crimped repair.

This complete kit includes four injector pigtail harnesses and eight heat shrink butt connectors, making it suitable for replacing all four injector plugs or keeping spares for future maintenance. It offers a cost-effective solution that helps prevent recurring electrical issues while maintaining the reliability of the fuel injection system.

By restoring dependable injector connectivity, this replacement kit supports stable fuel system function, smooth engine operation, and reduced risk of drivability issues. Its durability and OE-specific design make it an ideal choice for maintaining long-term reliability for Chevy GMC L5P 6.6L Diesel 2017-2024 trucks.

Package Includes:
4 x Injector Pigtail Harness
8 x Heat Shrink Butt Connectors

Specifications:
Type: Fuel Injector Pigtail Harness Connector Set
Material: Plastic + Silicone
Color: As Shown
OE Part Numbers: 19368140, PT3739
Connector Type: Molded, OE-Style, Sealed Terminals
Placement on Vehicle: Engine Compartment, Fuel Injector Wiring
Fitment: for Chevy GMC L5P 6.6L Diesel 2017-2024
Fitment Type: Direct Replacement