I looked under my hood today and I lost two of them, and a third is almost off. Can someone recommend, via link, of new ones, either Genuine Honda part or others that will be less likely to vibrate off? Thanks.

 

Exhaust Manifold for 2001 Honda S2000

Good luck

 

the Honda nuts are designed to work in that environment, they are a type of a locknut. My guess is they weren't torqued to spec when installed, just get some replacements from a Honda dealer and torque to 23 ft lbs.

 

Thanks guys!