Product Description
Genuine GM 12677003 LT4 High-Pressure Fuel Feed Line Tube
S-Shaped Stainless Steel Fuel Line for Supercharged Gen V LT4 Applications
Replace the original high-pressure fuel feed line on a compatible supercharged LT4 engine with genuine GM part number 12677003. This stainless steel, S-shaped fuel tube provides the original GM configuration used to connect the LT4 high-pressure fuel system to the fuel rails. It is also commonly used when converting other 2014-and-newer LT-based engines to compatible LT4 fuel-pump and injector components.
Key Features & Benefits
- Genuine GM Part Number 12677003: Manufactured as an original GM fuel-system component for supported supercharged LT4 applications. The genuine GM construction and exact part-number identification make this line suitable for replacing the original tube with the corresponding factory-style component.
- S-Shaped LT4 Fuel Feed Tube: Features the distinctive formed shape used to route the high-pressure fuel connection to the LT4 fuel rails. Its application-specific configuration distinguishes it from fuel feed lines intended for other Gen V LT fuel-pump, injector or rail combinations.
- Stainless Steel High-Pressure Line: Constructed from stainless steel for use within the supported LT4 high-pressure direct-injection fuel system. This is a rigid formed tube rather than a universal flexible fuel hose or a line intended for a conventional low-pressure port-injection system.
- Replacement for the Single-Use Original Line: Provides a new replacement when the original LT4 fuel feed tube has been removed during fuel-system, intake or engine modifications. The factory line is considered a single-use component, making a new tube an important part of reassembly.
- Commonly Used for LT4 Fuel-System Conversions: Frequently used when installing LT4 fuel-pump and injector components on other 2014-and-newer Gen V LT-based engines. The line supports conversion combinations specifically configured around compatible LT4 high-pressure fuel-system components.
Notes
- Original vehicle applications listed below are limited to models equipped with the supercharged LT4 engine.
- This high-pressure fuel feed line is considered a single-use component and should be replaced after removal.
Key Fitments
- 2016–2019 Cadillac CTS-V with supercharged LT4 engine
- 2017–2021 Chevrolet Camaro ZL1 with supercharged LT4 engine
- 2015–2019 Chevrolet Corvette Z06 with supercharged LT4 engine
- Compatible 2014-and-newer LT-based fuel-system conversions using LT4 fuel-pump and injector components
