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Install Bay BT305L Long Brass Battery Side Post Adapter

Part of: Install Bay Brass Battery Side Post Adapter

Other options in this family: Install Bay BT305 Install Bay BT305-10

Manufacturer

Picture for manufacturer Install Bay

Part Number

BT305L
7 reviews
Sale Price

$6.49

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Install Bay BT305L is a long brass battery side post adapter designed for use with side-terminal batteries commonly found on GM and other domestic vehicles. This adapter threads into the battery's standard 3/8"-16 side post and provides a secure, corrosion-resistant connection point for battery cables, accessories, and charging leads.

Constructed from solid brass, the BT305L offers excellent conductivity and durability compared to zinc or steel alternatives, making it well-suited for both daily drivers and custom audio, electrical, or powersports installations. The long-length design provides extra thread engagement and additional clearance for thicker cable lugs or stacked connections.

Key Features:

  • Long-length brass construction for superior conductivity and corrosion resistance
  • Fits standard 3/8"-16 side-post battery terminals
  • Ideal for GM-style side-post batteries
  • Compatible with car audio, trailer brake controllers, and other electrical accessories
  • Sold individually (each)
  • Part of the Install Bay / Metra Electronics professional-grade installation accessory line

The BT305L is a practical solution for installers who need a reliable, long-reach side post adapter to accommodate cable lugs or multiple connections at the battery terminal.

Great product

Fast shipping, on-time delivery, and excellent follow-up after the item arrived. Great customer service and a smooth experience overall.

Got the part I needed pretty quick. Smooth transaction.

I bought my item from them due to the original site I bought from kept telling me my item was back ordered and didnt know when they would have one. It was easy and painless to order and received my item in a timely matter. The price was good especially seeing what other sites were charging, not the lowest price but we'll worth the extra 20 bucks I paid. Will buy from them again if they have what I need.

Great job

Cheapest price, found quickly on google, and shipped/delivered extremely quickly!

The delivery was late it was FedEx fault but thmotorsports refund my ten dollars charges for two days shipping. Wonderful service i will order from them again and again.

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