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Trucktok 2016-2018 6.7L Ram Cummins Tuner Harness Plug Kit
Brand TruckTok

Trucktok 2016-2018 6.7L Ram Cummins Tuner Harness Plug Kit

SKU ER-0327
$129.99 - $129.99
$129.99
$129.99 - $129.99
$129.99

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Availability:
in stock, ready to be shipped

Installation Discussion & Community Support

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FITMENT

  • 2016-2018 6.7L Dodge Ram Cummins 2500 3500 Turbo Diesel.
  • Note: This is for pick up only; Does NOT fit Cab & Chassis trucks. 
  • The base kit does not include DEF tank plugs.

DESCRIPTION

Product Overview

  • When installing aftermarket tuning or deleting factory emissions hardware on a 2016–2018 6.7L Cummins, multiple underhood and chassis electrical connectors are left unplugged and exposed.
  • Leaving open sensor sockets exposed to rain, mud, road salt, and engine heat leads to severe pin corrosion, short circuits, and damaged wiring harnesses.
  • The Tuner Harness Plug Kit high-impact plugs lock out moisture and dirt to protect your truck’s electrical system and maintain a clean, professional engine bay and chassis layout.

Key Features

  • Heavy-Duty Automotive Plastic: Molded from heat-resistant, high-impact ABS polymer designed to withstand harsh under-hood operating conditions.
  • Eliminates Electrical Interference: Protects exposed pin terminals to prevent short circuits, signal noise, and phantom fault codes.
  • Factory-Style Locking Snap Interfaces: Precision-molded tabs align perfectly with original OEM plugs for a snug, vibration-proof seal.
  • Complete Harness Protection: Weatherproofs open wiring harness connectors left disconnected after installing aftermarket performance tunes.

FAQ

Q: What is a Tuner Harness Plug Kit used for?

A: This kit seals unused factory wiring connectors after tuning or aftermarket modifications. It helps protect exposed connectors from moisture, dirt, road debris, and corrosion.

Q: Do I need these if my tuner already disables the factory components?

A: Yes. Tuning may disable electronic functions, but unused physical connectors are still exposed to the environment. These plugs provide additional protection for the factory wiring.

Q: Will installing these affect future maintenance?

A: No. The plugs are removable and allow easy access to the original connectors if factory components need to be serviced or reinstalled.

Q: Are these plugs heat resistant for engine bay use?

A: Yes. These harness plugs are designed to withstand typical engine bay conditions, including heat, vibration, and exposure to road contaminants, helping protect unused factory connectors during daily driving and heavy-duty use.

  • 5 stars: 2 (22%)
  • 4 stars: 3 (33%)
  • 3 stars: 3 (33%)
  • 2 stars: 1 (11%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
M
Matt Wilson (United States)
Great product

Great product

H
Hank Boudreaux
2017 Ram — DPF+DEF+EGR delete, all connectors sealed

2017 Ram 2500. Full emissions delete on the 68RFE truck. This plug kit had everything — the 2016-2018 trucks have a slightly different DEF tank harness configuration from the 2013-2015 and this kit has the correct plugs. No more corrosion in the connectors under the truck. The NOx sensor plugs are deep-reach to seal the sensor port on the exhaust. Took 15 minutes to cap everything.

R
Rusty Mabrey
2018 Ram — tunes flash clean with no ghost codes

2018 Ram 3500 HO with the Aisin. After deleting I had a tuner remote in and he said the harness was throwing open-circuit codes even with the delete tune loaded. Added this plug kit and the ghost codes disappeared. The plugs have the correct termination resistance so the ECU sees a closed circuit, not an open one. Clean tune flash, no CEL, no pending codes. The plugs are worth it for the tune quality alone.

C
Colt Weatherby
2021 Ram — 2019+ generation has its own connector layout

2021 Ram 2500 with the CP4.2. The 2019+ trucks changed the DEF tank and NOx sensor connector styles from the 2016-2018 generation. This kit has the correct updated plugs. Weatherproof silicone boots on every connector and the NOx sensor plugs have the right thread pitch and seat. No leaks, no moisture, no salt intrusion after one Michigan winter.

D
Dusty Boudreaux
No more P0401 and P2457 codes after capping the sensors

2010 Ram 3500 dually. After my delete I was getting intermittent sensor rationality codes because the open connectors were picking up moisture. This plug kit eliminated all of them. Each plug has the correct resistor or termination so the ECU does not throw a circuit-open code. The plugs are labeled for which connector they go to — EGR, MAF bypass, DPF pressure, etc. No more guessing.

R
Rusty Weatherby
2008 Ram 6.7 — one plug kit, no more open connectors

2008 Ram 3500 with the 68RFE. Deleted the DPF and the EGR and had three open factory connectors hanging — EGR valve, EGR throttle, and DPF pressure sensor. This plug kit seals all of them. The plugs are weather-sealed with silicone grommets so no moisture or road salt gets into the connectors. If you ever need to reverse the delete, just unplug the kit and reconnect the factory sensors. Clean solution.

B
Beau Fontenot
2015 Ram — complete kit, nothing missing

2015 Ram 3500 HO. I counted the plugs in the kit before install — it covered the EGR valve, EGR cooler bypass, throttle valve, swirl valve, DPF differential pressure, both NOx sensors, DEF injector, and DEF tank. All OEM-style connectors with locking tabs. The silicone seals are thick and the plugs seat fully. 40K miles since install and no water intrusion, no corrosion, no codes.

C
Colt Prather
2011 Ram — kept the factory harness clean for future smog check

2011 Ram 2500. I live in a county that might get emissions testing eventually, so I wanted to keep my factory harness intact and un-cut. This plug kit caps every connector that goes to the deleted components — EGR, swirl valve, DPF sensors — without cutting a single wire. The plugs click into the factory connectors just like the sensors do. When it is time to put it back to stock, everything is ready to plug back in.

W
Waylon Hightower
2014 Ram DEF system connectors — all covered

2014 Ram 2500. The 2013+ trucks add DEF to the mix, which means more connectors to deal with when you delete — DEF injector, DEF tank heater, DEF level sensor, NOx sensors, plus the EGR and DPF stuff. This kit includes plugs for all of them. The DEF tank plugs are especially important because those connectors are exposed under the truck and will corrode fast if left open.