Product Description
Genuine GM LT4 Fuel Injector & High Pressure Fuel Pump Upgrade Kit | Fits 2014+ LT1 L83 L86 Engines | Includes Injectors, HPFP & Fuel Lines
Upgrade your LT1, L83, or L86 engine with the Genuine GM LT4 Fuel Injector and High Pressure Fuel Pump Kit. This complete package provides the increased fueling capacity needed for high-performance builds, supercharged applications, or power levels that exceed the stock LT1/L83/L86 fuel system. Designed with OEM reliability and precision, this kit ensures consistent fuel delivery under demanding conditions. PCM tuning is required for proper integration when used in non-LT4 applications.
Key Features:
- Complete Upgrade Kit: Includes 8 LT4 fuel injectors, high pressure fuel pump, and all required LT4-specific fuel lines.
- Higher Flow Capacity: Supports increased horsepower and torque demands beyond stock LT1, L83, and L86 limits.
- OEM Reliability: Genuine GM components ensure perfect fitment, long-term durability, and consistent performance.
- Direct Integration: Designed for 2014+ LT-based engines, with factory-style connectors and fittings for straightforward installation.
- PCM Tuning Required: Calibration updates are needed when installed on non-LT4 applications to optimize fueling and drivability.
Kit Contents (Genuine GM Parts):
- 19420801: Set of 8 LT4 Fuel Injectors
- 12711668: LT4 High Pressure Fuel Pump (HPFP)
- 12677003: Fuel Rail "S" Feed Pipe
- 12677005: Feed Line from HPFP to "S" Pipe
- 12663577: Feed Pipe into HPFP from Low Pressure Supply Line
Applications:
Fits 2014+ GM LT-based engines requiring higher fueling capacity:
- Chevrolet LT1
- Chevrolet L83
- Chevrolet L86
Note: PCM tuning required when installed on non-LT4 applications.
