ARP Head Studs Mazdaspeed3 2007-2009 WRX_2015-2021 The Legacy GT version of

The Legacy GT version of the Hi-Power dual exhaust features 2

Carrying case

Part #: 4244

The 5-ply silicone wire mesh construction will provide durability and offer resistance to heat soak

NGK IRIDIUM: More Durability and a Higher Melting Point compared to Platinum

ARP Head Studs Mazdaspeed3 2007-2009 WRX_2015-2021 The Legacy GT version ofPart #: 218 4702 The ARP Head Studs for the 07 09 Mazdaspeed3 are constructed of a premium grade 8740 alloy that is rated far superior to aircraft quality. This alloy is heat treated to 190,000 psi for complete heat penetration. Following heat treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. Because ARP studs