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NOCO AC Port Plug with Extension Cord - 16" Long

NOCO AC Port Plug with Extension Cord - 16" Long

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329-GCP1 - Plugs and Sockets NOCO Accessories and Parts
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Low-profile port plug lets you create a pass-through outlet for easy access to an AC charging port on your truck, boat, RV, or trailer. Pressure-fit cap provides a waterproof seal. Call 800-298-8924 to order NOCO accessories and parts part number 329-GCP1 or order online at etrailer.com. Free expert support on all NOCO products. Guaranteed Lowest Price and Fastest Shipping for NOCO AC Port Plug with Extension Cord - 16" Long. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (20)
  • Q & A (1)
  • Videos (2)
  • Photos
  • Why etrailer?

NOCO Accessories and Parts

  • Battery Charger
  • Plugs and Sockets
  • NOCO

Low-profile port plug lets you create a pass-through outlet for easy access to an AC charging port on your truck, boat, RV, or trailer. Pressure-fit cap provides a waterproof seal.


  • Low-profile port plug creates a connection point for easy access to an AC charging port
    • Plug-and-play connection - no hand wiring or modifying cables needed
    • Perfect for engine block heaters, battery chargers, RV and marine charging ports, and home improvement applications
  • Full-size AC prongs provide full contact for maximum conductivity
  • 14-AWG copper wire allows maximum current flow
  • Pressure-fit cap creates a tight seal to protect the plug against dirt, water, and debris
  • Simple flush-mount installation with included self-tapping screws
    • Requires a 2" diameter cutout
  • UL certified


  • Port plug dimensions: 3-1/8" diameter x 2-1/8" deep
    • Recessed depth: 1-13/16"
  • Extension cord length: 16"
  • Amp rating: 15 amps
  • Voltage rating: 125 volts
  • 1-Year limited warranty

NOCO GCP1 AC Port Plug with Extension Cord Dimensions

GCP1 NOCO Accessories AC Port Plug with Extension Cord - 16" Long

Item # 329-GCP1

Installation Details 329-GCP1 Installation instructions

California residents: click here

Video of NOCO AC Port Plug with Extension Cord - 16" Long

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for NOCO Battery Chargers 329-GCP1 Review

Speaker 1: Today we're taking a look at the NOCO Accessories AC port plug. This AC port plug makes a charging port, engine block, or a garage outlet more accessible. It features the integrated extension cord that offers flexibility and ease of installation. The unit has the full size AC prongs, which provide maximum conductivity. This is a recessed mount installation, so the installation area requires a 2" diameter hole or cutout. Then it has three mount holes on the unit, and secures in place with the included mounting hardware.The rubber construction right doubles as a seal, so it's a really nice design.

This fits in there. That's going to protect the prongs, but also on the backside, you want to make sure that the holes and the rubber collar right right here line up with the mount holes. That creates a nice, tight seal at the installation surface, which is going to keep dirt and moisture from getting into and behind that cutout or installed area.We're looking at the nice water resistant cap, protects the prongs. Again, keeps dirt and moisture away from the connection points. This unit is UL approved.

Overall diameter, outside edge to outside edge, that's a 3" diameter. The extension cable measures around 16". Amp rating for the unit is 13 amps. Voltage rating is 125 volts. That's going to do it for today's look at the NOCO Accessories AC port plug..

Customer Reviews

NOCO AC Port Plug with Extension Cord - 16" Long - 329-GCP1

Average Customer Rating:  4.9 out of 5 stars   (20 Customer Reviews)

Low-profile port plug lets you create a pass-through outlet for easy access to an AC charging port on your truck, boat, RV, or trailer. Pressure-fit cap provides a waterproof seal.

- 329-GCP1

Works perfectly! 674752

- 329-GCP1

Great external 110V port for my boat, internal female 3 prong plug connects to my boat battery charger! 855340

- 329-GCP1

I used for my trailer cargo. Very good quality 792181

- 329-GCP1

Works Perfect! 791792

- 329-GCP1

Exactly what I was looking to install in my camper van to support electric for my CPAP. 784399

- 329-GCP1

easy install, weathertight, holding up well after several months. i use if for trickle charger on motorcycle in enclosed trailer. 776195

- 329-GCP1

Great for bringing power to my teardrop trailer build. 769787

- 329-GCP1

quick delivery and great price!! 671982

- 329-GCP1

I used this on my dump trailer so I could easily charge my battery without opening my lock box exposing the battery and hydraulic pump. Works great!! The adapter will receive a large plug end. See photos. 641631

- 329-GCP1

It is made well and is exactly what I was looking for. It is installed on my 2017 Nissan Titan XD Diesel 4x4 pickup truck now for the diesel engine block heater power supply. I just have to take an extension cord and plug into the truck in when needed. 628963

- 329-GCP1

Excellent product at a great price,easily installed.great way to have power inside my snowmobile trailer rather than running extension cord between ramps or side door 602995

- 329-GCP1

Easy to install after cutting holes to the template you need to download/print the .pdf installation instructions from the etrailer.com webpage. I did not expect the screws which come with it to secure in the steel bumper. Purchased screws and lock nuts to secure. Now I do not have an ugly plug hanging down! Already had somebody notice it today after wondering what it was when looking at my steel bumper at a local store. Supposed to get down below 32 degrees tonight so I will use it for the first time to keep my diesel engine warm. 602061

Used multiple times over the winter. Worked great. Still get jealous looks questions about it.
Michael S - 02/02/2020


- 329-GCP1

Very good deal on an AC port plug. I installed this on my enclosed trailer to run battery chargers while I'm not using it. The quality exceeded my expectations and installation was very easy. 582514

- 329-GCP1

Great quality, should work fine. 554264

- 329-GCP1

Was looking for a two way plug to serve as a shore tie port so that it wouldn't be necessary to cut off the plug end of my new onboard battery charger and then hard wire. This product achieved that objective, albeit with a short pigtail, which also allows plugging something else to the shore tie port. Straightforward installation. 517818

- 329-GCP1

I used my ac plug port for the onboard charger on my golf cart. It works great, and looks clean. The only reason this is not a five star rating is because etrailer had a bit of trouble getting this product to me. 504193

- 329-GCP1

Quick service! Great product. All is good. Thanks a lot 503804

- 329-GCP1

Great product and fast delivery thank y ou 499476

- 329-GCP1

Next millennium product here, way cleaner look than the typical plastic boxes. 495052

- 329-GCP1

Definitely beats having your block heater cord hanging out of the bumper or grille. Part was initially on back order which I discovered after placing my order. The 5 star rating is more towards the company than the product. George J was very prompt on informing me of the situation and expected ship date. Its almost unheard of in the age of texhnology to actually receive a phone call to let me know. Keep up the good work guys! You have earned my business on customer service alone. 472031


Ask the Experts about this NOCO Accessories and Parts

  • Can Leads on NOCO Genius On-Board Battery Charger be Extended?
    The leads on the NOCO Genius On-Board Battery Charger # 329-GEN4 can be extended up to 10' but only after the inline fuse. The manufacturer does not recommend extending the AC cord or modifications between the inline fuse and the charger. To add protection you should add another inline fuse closer to the battery with fuse holder # SWC9538 and 15 amp fuse part # C58450-1. This charger will work with the NOCO Genius AC Port Plug with Extension Cord # 329-GCP1 which is 16" long and that...
    view full answer...

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Info for this part was:

Installed by:
Cole B
Installed by:
Jacob H
Video Edited:
Chris R
Edited by:
Daron K
Written by:
Brian T

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