Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the Nissan 3.8L V6 found in the R35 GT-R from 2008-current. Our flange is compatible with all R35 editions, including the NISMO, Black Edition, SPEC-V, and N-Attack
Port Size: 1.725"