ARP 203-4306 Pro Series Head Stud Kit for 2007-2015 Scion/Corolla 2.4L 2AZ-FE

Vehicle Fitment

• 2007-2010 Scion tC (Gen 2, 2.4L 2AZ-FE), 2008-2015 Scion xB (Gen 2, 2.4L 2AZ-FE); also fits 2007-2015 Toyota Corolla & Matrix with 2.4L 2AZ-FE (Gen 2)

Features

• ARP Pro Series head stud kit designed for 2AZ-FE Gen 2 engines
• Premium-grade 8740 chromoly alloy
• Heat-treated to approximately 220,000 psi tensile strength
• Centerless ground for exceptional straightness and alignment
• Thread-rolled after heat treatment for superior fatigue resistance
• 12-point nuts and hardened washers for even clamping force
• Black oxide finish for corrosion resistance
• Includes ARP Ultra-Torque assembly lubricant for proper preload

Specifications

• Material: 8740 chromoly alloy, ARP2000 spec
• Tensile strength: approx. 220,000 psi
• Head style: 12-point; Finish: Black oxide
• Washer: hardened and parallel-ground
• Stud count matches Gen 2 2.4L 4-cylinder head layout

Included Components

• 10x ARP Pro Series head studs
• 10x hardened, parallel-ground washers
• 10x 12-point nuts
• 1x Packet of ARP Ultra-Torque Assembly Lube

Product Description

The ARP 203-4306 Pro Series Head Stud Kit is engineered for Toyota's 2.4L 2AZ-FE Gen 2 engines found in Scion tC (2007-2010), Scion xB (2008-2015), and compatible Toyota Corolla and Matrix models. Constructed from high-strength 8740 chromoly alloy and treated to an impressive 220,000 psi tensile rating, each stud is centerless ground and thread-rolled post-heat treatment - ensuring precise alignment, superior fatigue resistance, and seamless assembly.

The kit includes robust 12-point nuts and hardened washers for balanced clamping, all finished in corrosion-resistant black oxide. ARP Ultra-Torque lubricant is included to achieve correct preload. Fitment is confirmed through 2015; **2025 coverage is unconfirmed at time of listing**. No known exclusions for Gen 2 applications. Ideal for performance rebuilds, turbo upgrades, and reliable OEM-style maintenance.