ARP 151-4204 Head Stud Kit for 2003-2007 Ford Focus 2.3L I4

Vehicle Fitment

• 2003-2007 Ford Focus (All trims, 2.3L Duratec I4)

Features

• Premium 8740 chromoly steel construction
• Heat-treated to 190,000 psi tensile strength
• Centerless ground for precise concentricity
• Black oxide finish for corrosion resistance
• 12-point nuts with 4mm Allen socket size
• Hardened parallel-ground washers included
• Designed for high-performance and racing applications
• Professional-grade fasteners for optimal torque retention

Specifications

• Material: 8740 chromoly steel
• Tensile Strength: 190,000 psi
• Socket Size: 12mm 12-point, 4mm Allen
• Finish: Black oxide
• Compatibility: Ford Focus 2.3L Duratec I4
• Position: Head studs, front/rear cylinder head

Included Components

• 10x ARP 151-4204 head studs
• 10x 12-point nuts
• 10x Hardened parallel-ground washers
• 1x ARP Ultra-Torque® fastener lubricant

Product Description

The ARP 151-4204 Head Stud Kit is engineered for 2003-2007 Ford Focus vehicles with the 2.3L Duratec I4 engine. Constructed from high-strength 8740 chromoly steel and heat-treated to 190,000 psi, these studs provide superior durability for both street and high-performance applications.

Each kit includes hardened washers and professional-grade 12-point nuts for precise torque application and even load distribution. The black oxide finish protects against corrosion, ensuring long-lasting performance.

Ideal for enthusiasts and engine builders, this kit delivers exceptional clamping force and maintains cylinder head integrity under demanding conditions. ARP Ultra-Torque® lubricant is included to guarantee accurate installation and torque specifications.