GM Duramax 6.6L - Shibby Engineering Tuner Harness Plug Kit (2011-2023)

GM Duramax 6.6L - Shibby Engineering Tuner Harness Plug Kit (2011-2023)Introduction Protect exposed wiring after emissions modifications with the Duramax DPF Delete Plug Kit (20112023). Designed for GM Chevy 6. 6L LML, LGH, L5P and L5D engines, this kit seals unused exhaust and EGR connectors to block out moisture, dirt and debris. It provides a clean, factory style finish for trucks running performance or off road calibrations. Available Manufacturers Customers can now choose between Shibby Engineerings plug kit and the

Introduction

Protect exposed wiring after emissions modifications with the Duramax DPF Delete Plug Kit (2011–2023). Designed for GM/Chevy 6.6L LML, LGH, L5P and L5D engines, this kit seals unused exhaust and EGR connectors to block out moisture, dirt and debris. It provides a clean, factory-style finish for trucks running performance or off-road calibrations.

Available Manufacturers

Customers can now choose between Shibby Engineering’s plug kit and the newly added Black Bandit option. Black Bandit manufactures locally, allowing them to offer a more cost-effective price point while maintaining and in many cases exceeding the same premium build standards expected in the diesel performance market.

Key Features

• Weatherproof Protection – Factory style caps shield unused connectors from moisture, dirt and debris.
• OEM-Like Fit and Finish – Each plug locks securely into the harness, giving the engine bay a clean, professional appearance.
• Simple Installation – No special tools required; the caps snap into place quickly and easily.

Benefits

• Prevents Wiring Damage – Weather-sealed caps guard unused connectors from corrosion and environmental exposure.
• Clean, Factory-Style Appearance – Maintains a tidy, OEM-like look after removing emissions components.
• Performance-Focused Compatibility – Ideal for trucks equipped with DPF, EGR or exhaust modifications and off-road calibrations.

Compatibility

• 2011–2023 GM/Chevy 6.6L Duramax LML
• 2011–2023 GM/Chevy 6.6L Duramax LGH
• 2017–2023 GM/Chevy 6.6L Duramax L5P
• 2019–2023 GM/Chevy 6.6L Duramax L5D

Technical Specifications

• Design: Snap-in protective caps for unused DPF/EGR wiring connectors
• Construction: Weather-resistant polymer housings
• Function: Seals open harness ends created by exhaust or emissions-system modifications
• Fitment: Direct OEM-style engagement with no wiring modification required

Installation & Notes

• Installation Time: Under 30 minutes with basic hand tools
• Tool-free, snap-in design
• Designed for trucks with off-road or performance modifications

Additional Information

• Not Included:
  • DEF tank plugs
  • Shift-on-the-fly tuning caps
  (Sold separately)
• Best For: Owners needing clean, protected wiring after emissions-system removal or modification.

Frequently Asked Questions (FAQ)

Q1: Will this kit fit all 2011–2023 6.6L Duramax trucks?
A1: Yes. It fits LML, LGH, L5P and L5D-equipped models.

Q2: Are the Shibby Engineering and Black Bandit kits interchangeable?
A2: Yes. Both provide the same OEM-style connector interface with different pricing and manufacturing sources.

Q3: Do I need special tools?
A3: No. The caps snap into place by hand.

Q4: Are DEF or SOTF plugs included?
A4: No. These components are sold separately.

Q5: Is this kit intended for trucks with emissions modifications?
A5: Yes. It is specifically designed to protect unused connectors created by DPF, EGR or exhaust changes.