Shibby 2017 - 2023 GM L5P / L5D 6.6L Duramax Tuner Harness Plug Kit (2017–2023 GM Duramax L5P/L5D 6.6L)

Weatherproof harness cap kit for tuned or optimized GM Duramax trucks. Used to seal exposed exhaust and some EGR harness connectors after tuning or component removal.

Overview

This base kit provides weatherproof caps with factory-style interfaces to protect all the exhaust and some EGR harness components on optimized trucks. It is a protection solution for exposed harness connectors — not a tuning device.

Key Details

• Weatherproof caps with factory-style interfaces designed for exposed exhaust and select EGR harness connectors
• Intended for tuned or optimized trucks where factory harness points are left exposed
• Protects against moisture, debris, and corrosion on sealed connector points
• Base kit does not include DEF tank plugs, CAN piggyback plugs, or SOTF-specific caps

Compatibility

2017–2023 GM Duramax 6.6L — L5P and L5D applications.

What’s Included

Base kit with weatherproof caps using factory-style interfaces to protect exhaust and some EGR harness components.

Notes

This kit will NOT cover applications where the EGR is fully in place, DEF tank components remain installed, CAN piggyback plugs are used, or SOTF tuning caps are already installed. Those items are sold separately in store.

Why Choose Dieselr?

Dieselr verifies vendor fitment and presents clear product descriptions so you get the right protection solution. Contact Dieselr for fitment questions, accessory recommendations, and parts support for tuned Duramax trucks.