ARP Exhaust Port Studs & Nuts. Fits Big Twin 1984up & Sportster 1986-2021.

Benefits & Features:-

* Heat treated 8740 chrome moly studs with black oxide finish nuts

* Tensile strength rated @ 170,000 psi - Superior & Stronger than OEM & stronger than grade 8 fasteners

* Wide underhead flange bolts and hardened chamfered washers provide even load distribution for optimum sealing of surfaces - preventing leaks.

* Replaces OEM # 16715-83 & 7593

Proudly Made in the USA by ARP!