GM Fuel Rail Crossover Tube Gen V+ L84 L87

The GM Genuine Gen V+ Fuel Rail Crossover Tube – 12703668 is an OE replacement high-pressure fuel tube designed for compatible 2019+ Gen V+ GM LT-based engines.

This crossover tube connects the high-pressure direct-injection fuel system and is commonly replaced during camshaft installations, DFM deletes, high-pressure fuel system service, and engine rebuilds.

Features

• Genuine GM / ACDelco OE component
• Fuel rail inlet crossover tube / fuel feed intermediate pipe
• Designed for 2019+ Gen V+ LT engines
• Factory OE fit and function
• Direct replacement for the original fuel crossover tube
• Commonly replaced during camshaft and DFM delete installations

Common Applications

Designed for compatible 2019+ Gen V+ GM engines, including:

• 5.3L L84
• 6.2L L87
• 6.6L L8T
• Select 2019+ LT1 applications
• Other compatible Gen V+ applications using GM 12703668

Important Fitment Note

This crossover tube does NOT fit L83, L86, LT4, or earlier applications that use the previous Gen V fuel system configuration.

Always verify your engine code and fuel system configuration before ordering.

What's Included

• (1) Genuine GM Fuel Rail Crossover Tube