Product Description
Genuine GM 12677005 LT4 High-Pressure Fuel Line Tube
Stainless Steel Fuel Feed Line from the HPFP to the Fuel Distribution Block
Genuine GM part number 12677005 is the stainless steel LT4 high-pressure fuel line that connects the mechanical high-pressure fuel pump to the distribution block located before the fuel rails. This factory GM fuel feed tube is a replacement for the single-use original line on compatible supercharged LT4 vehicles and is commonly used when converting other 2014-newer Gen V LT-based engines to an LT4 high-pressure fuel pump and injector configuration.
Key Features & Benefits
- Genuine GM Part Number 12677005: Manufactured as an original-equipment GM LT4 fuel-system component. The exact GM part number provides a clear reference when replacing the corresponding factory high-pressure fuel line or gathering components for an applicable LT4 fuel-system conversion.
- HPFP-to-Distribution-Block Connection: Routes high-pressure fuel from the engine-mounted mechanical high-pressure fuel pump to the distribution block positioned before the fuel rails. This is the intermediate feed tube rather than the individual lines running from the distribution block to the rails.
- Stainless Steel Construction: The rigid stainless steel tube is manufactured for its specific high-pressure LT4 fuel-system location. Its formed design follows the intended routing between the high-pressure pump and fuel distribution block on the supported configuration.
- Useful for LT4 Fuel-System Conversions: Commonly used when fitting an LT4 high-pressure fuel pump and LT4 injectors to other 2014-newer LT-based engines. It supplies the corresponding feed-line connection between the LT4-style pump and distribution block.
- Factory LT4 Service Replacement: Provides the correct Genuine GM replacement line for the listed supercharged LT4 applications. It is especially relevant when engine or fuel-system modifications require removal of the original single-use high-pressure fuel tube.
Notes
- The original high-pressure fuel line is a single-use component and should be replaced when removed during applicable LT4 engine or fuel-system modifications.
Key Fitments
Original applications include supercharged LT4 models only:
- CADILLAC CT5 2022-2025
- CADILLAC CTS-V 2016-2019
- CADILLAC ESCALADE 2023-2024
- CHEVROLET CAMARO ZL1 2017-2024
- CHEVROLET CORVETTE Z06 2015-2019
