2002 Toyota Highlander Positive Battery Terminal Interface

Recently, I replaced my car battery and alternator on my 2002 Toyota Highlander. While doing so, I noticed that the positive battery terminal was fairly corroded and should be replaced before failure.

Yep, that's pretty chunky, time for a new one. But the local autoparts store didn't have quite the right replacement. At least in the US, it's common to use SAE top-posts, where the positive terminal is a little larger than the negative(also true of JIS, but this car uses SAE top posts). Here's a rough diagram of the component I need to replace:

The key measurements are:

• Roughly 17.5mm at the top of the terminal post / SAE standard positive terminal size. The negative post is much smaller.
• Less than 8.5mm diameter threaded stud for starter/alternator cables - a 5/16 inch or M8 stud is fine
• It would be nice to keep roughly 5.5mm threading for the clamp bolt so I don't have to re-connector my brake controller or radio
• It would be nice if the clamp bolt were in or movable to the current orientation - I don't have a whole lot of extra wire. Most can be flipped but not all.

What's available:

• Local Store: Universal top-post positive adapter, with 3/8 inch stud - stud won't fit alternator/starter wiring.
• Local Store: Universal top-post negative adapter, with 5/16 inch stud - stud fits, but positive terminal is too big for adapter.
• Toyota Dealer: Battery Cable Terminal End 90982-05058, only $32.09, no indication of which polarity it goes to, closed on Sundays.
• Amazon: POSITIVE OEM Car Battery Terminal, $8.41, M8 nut in description.

I ordered the part from Amazon, and it works great!