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ARP Custom Age 625+ Head Stud Kit for BMW B58 Engines

$822.29

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ARP Custom Age 625+ Head Stud Kit for BMW B58 Engines

$822.29

$822.29

Ensure maximum cylinder head clamping force on high-output BMW B58 engines with the ARP Custom Age 625+ Head Stud Kit. Designed for high-boost applications where factory bolts or standard fasteners may stretch, these studs are a critical upgrade to prevent head gasket failure and head lift during extreme cylinder pressure events.

The Custom Age 625+ (CA625+) super-alloy material provides a typical tensile strength of 260,000 to 280,000 psi, offering a significant margin of safety over standard ARP2000 and OE hardware. Each stud is centerless ground to ensure perfect concentricity and heat-treated before thread rolling to maximize fatigue strength and reliability in high-performance builds. This kit is the industry standard for big-turbo B58 setups found in modern BMW and Supra platforms.

  • Fits BMW B58 3.0L Inline-6 Turbo engines
  • Material: Custom Age 625+ Super-Alloy
  • Tensile Strength: 260,000 – 280,000 psi
  • Fastener Type: 12-point nuts for precise torque application
  • Precision-ground parallel washers ensure even load distribution
  • Includes ARP Ultra-Torque Fastener Assembly Lubricant

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