Introduction

2002-2014 Subaru WRX and 2004-2021 Subaru WRX STI Cylinder Head Studs by ARP

This ARP head stud kit is made from 8740 chromoly steel, 190,000 psi tensile strength. It is precision centerless ground and thread rolled to Mil-S-8879 specs. The kit includes black oxide finish studs, hardened washers, and premium grade nuts. Removing your cylinder head? Don’t forget the head gasket! Select from our vast selection of head gaskets below and be sure to check out our Engine Components and Cooling :: Cylinder Head Gaskets and Studs section for more information. Replacing that old timing belt is also a great idea! Even if you aren’t at the replacement interval it will save you a significant amount of money down the line! See our Engine Components and Cooling :: Rebuild Components :: Timing Belt Components section for more information!

Features

• 8740 Chromoly
• Tensile strength: 190,000 PSI

Recognizing Head Stud Failures

Applications

• 2002-2014 Subaru WRX
• 2004-2021 Subaru WRX STI

What’s in the box?

• 12 – ARP head studs
• 12 – parallel ground washers
• 12 – 8740 chromoly steel 12pt nuts
• 1 – .5 oz. pack of ARP Ultra-Torque fastener assembly lubricant

Warranty

• ARP Warranty