ARP Rod Bolts for the 2.5L Subaru engine are made of premium grade 8740 chrome moly steel and heat treated to a nominal tensile strength of 190,000 psi. They are far superior to OEM fasteners in terms of durability and service life fully capable of handling the extra stress of high combustion pressure engines. These are a necessary component when building a high horsepower engine.
Actual rod bolts will differ from photo.
-Subaru STI 2004-2007
-Subaru WRX 2004-2007