I sold my aftermarket exhaust with all the stock bolts/gaskets it comes with and I was wondering what size the bolts/nuts are so I can buy new ones from Home Depot instead of the dealership? (Dealer asking $90 for the 4 gaskets and bolts but won't say what size thay are)

04 Z

 

i know i used a 15mm to remove the nuts when i did my install

 

bump, someone told me M10??

 

that dealerhip is getting u n the butt then. if ur gonna buy or own bolts i would go 15mm like Z04 said. My HKS is 17mm

 

Metric M10 1.25mm thread pitch.

 

Thanks for the clearification motordyne, So is it 15mm, 10mm, or 17mm?

 

It uses a 14mm socket head.

 

Take a piece of your new exhaust with you to home depot and find what fits to be sure.