Anyone with my vehicle replace their orginal factory battery with a yellow-top? I've been hearing that the negative terminal on the yellow-top is a smaller size than the original battery terminal, therefore resulting in a loose fit. Anyone experience this?

 

I don't have an answer to your question, however I would recommend seeking another section to ask your question as the Nismo's have the same battery components as other 350Z's (at least for 2007 and 2008).

 

Yes the yellow top negative terminal is smaller.You would need http://www.autozone.com/batteries-st...er/257147_0_0/.

 

I ran a yellow top Optima 51-R battery in mine and it hooked up to the stock terminals just fine and worked under the stock hold-down, except it was half the size and about 15 lbs lighter than a stock size group 35 batt.

 

I'm running a red top now, no modifications necessary. Just need to look up the correct size for a 350z.