2017-2023 GM 6.6L Duramax L5P/L5D Tuner Harness Plug Kit

The Shibby Engineering 2017-2023 GM 6.6L Duramax L5P/L5D Tuner Harness Plug Kit provides factory-style, weather-resistant caps designed to protect exposed electrical connectors on compatible diesel applications.

These plugs help shield unused exhaust and selected EGR-related harness connections from moisture, dirt, road debris, and contamination while maintaining a clean factory-style fit.

Fitment:

• 2017-2023 GM 6.6L Duramax applications
• L5P and compatible L5D engine applications

Designed to protect:

• Exposed exhaust-system electrical connectors
• Selected EGR-related harness connectors

Important:

• This base kit does not provide full coverage if the EGR system remains fully in place
• DEF tank harness components are not included
• CAN piggyback plugs are not included
• Shift-On-The-Fly (SOTF) tuning caps are not included
• Additional plugs are available separately
• Verify model year, engine code, and connector compatibility before ordering
• Vehicle modifications must comply with applicable emissions laws and regulations

Includes:

• Shibby Engineering tuner harness plug components shown in the product image