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T-Spec GM Post Standard Battery Terminal

Short side-mount battery terminal

Item #: 120GMS

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6 Reviews | Ask Questions

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Solid brass terminal

Replace your vehicle's side-mount battery post with this terminal from T-Spec. This post allows you to use the terminal for all of your vehicle's factory wiring plus the ring terminal for another audio component. This heavy-duty black nickel-plated brass post can be used on either positive or negative battery terminals. Warranty: 1 year.

T-Spec GM Post Standard Battery Terminal Reviews

Average Customer Review:

6 Reviews

The good stuff

Written by: B J from North Carolina on January 2, 2016

Crutchfield Customer Review (What's this?)

I tried the auto parts store first. Yea, that didn't work. I ordered these and the long version ( which I didn't need). I was able to add a power lnverter, which used #2 cable, and these fit the factory battery ends perfectly . They were super easy to install and the auxiliary bolt made a great way to attach the inverter cables. Be sure to use a backup wrench as these bolts are stronger than the battery threads.


Cons: It would be nice if a protective boot ,for the positive post, were available.


Written by: Craig from Clarkson, KY on March 1, 2015

Crutchfield Customer Review (What's this?)

Exactly what I needed



battery terminal

Written by: Thadd H. from Kingston, ohio on December 5, 2014

Crutchfield Customer Review (What's this?)

Does a fine job securing the power lead for the amp

Pros: Price

Cons: Feels as if it will not tighten up properly in the battery.

Great on my Cutlass Supreme

Written by: Mad Mike from Iowa on October 5, 2014

Crutchfield Customer Review (What's this?)

Helped me connect my 4ga power lead to the battery

Pros: Gives you a clean looking install

Cons: None

Perfect for battery side terminal

Written by: buyer6060 from Pinole, CA on May 27, 2014

Crutchfield Customer Review (What's this?)

I decided to go full on with amp/powered sub and forgot this key piece. Without it, there is no way to connect the power cables to the battery, especially a 4g power cable. Once I got it, it was an easy install to replace the existing terminal and connect the amp/sub power cables. The black looks good and makes installation look clean.

Pros: Works for large gauge power cables.

Cons: None

Nice product

Written by: powell0329 from West Virginia on March 16, 2014

Crutchfield Customer Review (What's this?)

Great product overall

Pros: Helps to install other accessories without taking the battery terminal out every time

Cons: I've got two batteries so the terminal was a little short to wire all thing with the short post. I'd go with the long

Hands-on research

What's in the box?

Download owner's manual

  • GM battery side post (standard length)
  • Screw insert

Product Research


GM Post (Standard Length): This package contains a T-Spec GM side post battery terminal (standard length). The solid brass terminal has a flat-black finish.


  • Overall Dimensions:
    • Length: 1.305"
    • Diameter: 0.75"
  • Side Post Mount:
    • Length: 1.105"
    • Diameter: 0.75"
    • Thread Size: 3/8"D x 0.375"L
  • Screw Insert:
    • Length: 0.605"
    • Diameter: 0.545"
    • Thread Size: 5/16"D x 0.375"L

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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