The Tuner Harness Plug Kit for 2011–2023 GM LML and L5P Duramax trucks caps off your exposed OEM EGR and DPF (Diesel Particulate Filter) harness connectors after a delete — keeping moisture, dirt, and debris out of the connectors now sitting unused under your hood and beneath your truck.When you pull the EGR (Exhaust Gas Recirculation) and DPF systems, the factory wiring connectors that fed them don't go anywhere. They dangle there, exposed to heat, water, and road grime, and over time unprotected connectors corrode. That corrosion can spread to nearby wiring and throw phantom codes that are a pain to diagnose. This kit seals all of it off before that starts.It provides the harness caps to keep water and debris out of the harness both under the hood and under the body of the truck. Each cap plugs directly into the OEM connector with no modification — easy to install, no tools, no guesswork — and leaves your engine bay with a clean, finished look. Shipping is included in the price.Fitment is for 2011–2016 LML and 2017–2023 L5P Duramax pickup models only. It does not fit Cab & Chassis trucks, and it won't fit LMM, LBZ, LLY, or LB7 Duramax generations — the connector profiles are specific to the LML and L5P. Need help figuring out which connector is which? Call (888) 830-2588 or email [email protected] off-road/competition use only.
