Does anyone know the thread size of the lower through bolt on the alternator for a 91 Accord. I have lost the nut and need to get another one, I purchased a replacement bolt from Autozone but all the had was generic 3/8 bolts the nuts for which did not fit.

I do have the lower through bolt but I cant get the damn thing out!!! Any help is hugely appreciated.

 

Go to the majestic Honda part menu. I just looked there. It has the bolt sizes but I am unsure of which one you need a nut for. The menu is for ordering your parts on line.

 

Thanks for the link Chris, I'm pretty sure its either an 8mm or a 10mm cheap enuff to buy both and see which one fits.

Turns out thats the least of my worries, the crankshaft pulley/harmonic balancer seems to have split....ugh

 

btw its an 8mm nut just in case anyone else ever needs to know