The Diesel Techs
Harness Plug Kit
11–16 Duramax
Fits your
Check fitment for your
$149.00
Description
Fits
| Year | Make | Model | Engine |
| 2011-2016 | Chevrolet / GMC | Silverado / Sierra 2500HD / 3500HD | 6.6L Duramax LML |
Designed around the 2011-2016 LML Duramax, this kit caps the factory connectors that sit open once the truck has been tuned. Every plug is matched to its connector, keeping moisture and grit out of the harness under the hood and under the body so electrical gremlins have nowhere to start.
Features
- Seals unused factory connectors against water, dirt and debris
- Each cap is shaped to fit its factory connector
- Clean, finished look under the hood and chassis
- Installs by hand, with no cutting or splicing
Good to know
- DEF tank connectors are not covered by the base kit
- Shift-on-the-fly connector plugs are sold separately
Shipping
Free US shipping — no tariffs, no import fees.
Returns
Unused parts in original packaging may be returned within 30 days of delivery. Tuners married to a VIN need a factory unlock first — text a tech.
Goes with your build
Questions, answered
Can't find it here? Call or text +1 (888) 789-5551, 9–5 MST weekdays.
What parts do you offer?
We offer a wide range of high-quality diesel parts for various trucks, including full exhaust systems, tuners & tunes , and complete egr & def delete kits.
How do I place an order?
To place an order, simply add the desired items to your cart and proceed to checkout. Follow the prompts to enter your shipping and payment information.
Do you offer international shipping?
Yes, we offer international shipping world wide. Additional fees may apply, and delivery times may vary depending on the destination.
What is your return policy?
Due to the specialized nature of our products, we generally do not accept returns. Most items are VIN-specific or custom-built to order. Before returning any items, please contact us for specific shipping instructions.
How can I track my order?
Once your order is shipped, you will receive a tracking number via email. You can use this tracking number to monitor the progress of your delivery.