STI BRZ Black Duracon Shift Knob Application:ZD (MY2022+) but the early gasket has

but the early gasket has a slightly textured surface while the later gaskets have more polished surfaces

FUELING PERFORMANCE

and they are a direct replacement for the factory head bolts

SG117VA100 (MY15-21)

STI BRZ Black Duracon Shift Knob Application:ZD (MY2022+) but the early gasket hasSMOOTH FEELING Duracon plastic exhibits light weight and high strength and can be polished to a fine finish making it the ideal material for a shift knob. STI's duracon shift knob has had its shape finely tuned to provide an exquisite feel and allow for effortless shift motion from any position or angle. Complete with a carbon style shift pattern emblem. Manufacturer Part Nos: BRZ ZD ST35022ST400 BRZ ZC SG117CA000 What it fits: BRZ MY13 21 (ZC) 6MT