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

What It Does

Seals up loose harness connectors after pulling DPF, EGR, or exhaust parts on 2011-2023 GM/Chevy 6.6L Duramax trucks. Keeps water, dirt, and mud out of your wiring. Makes the engine bay look clean instead of hacked up.

Engine Coverage

• 2011-2023 Duramax 6.6L LML
• 2011-2023 Duramax 6.6L LGH
• 2017-2023 Duramax 6.6L L5P
• 2019-2023 Duramax 6.6L L5D

Brand Options

Pick one:

• Shibby Engineering – Solid reputation, been around
• Black Bandit – Built in USA, cheaper price, same or better quality

Black Bandit makes everything local so they keep costs down without skimping on build quality.

Why Get It

• Stops rust – Weatherproof caps keep terminals dry
• Looks factory – No zip ties or electrical tape hanging around
• Fast setup – Under 30 minutes, snaps right in

What You Get

• Snap-in caps for DPF and EGR harness plugs
• Weather-resistant polymer caps with OEM-style tabs
• Everything needed to cover open connectors after emissions removal

How to Install

Hand tools only. Plugs snap into the factory harness. No cutting, no splicing. Done in 30 minutes or less.

What's Not Included

• DEF tank plugs
• SOTF (shift-on-the-fly) tuning caps

(Buy those separate if you need them)