Engines and Components› Cylinder Heads and Components

ARP

ARP Toyota Dart 2JZ Iron Block CA625 head stud kit

$843.17

SKU: A00M 403-4301

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INSTALL DIFFICULTY
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Advanced — 4+ hours

Description

The ARP Custom Age / CA625+ Head Stud Kit (MPN: 403-4301) is designed for use with the stock 11mm head stud sized Dart 2JZ Cast Iron Eagle Block, part number 31011010. These studs are recommended for high-horsepower built Toyota 2JZ engines, specifically for builds over 900whp. Made from Custom Age 625+ material, they offer superior fatigue cycle life, tensile strength, and toughness, with complete resistance to atmospheric corrosion and oxidation. Typical tensile strength is 260,000-280,000 psi, making them an ideal upgrade to prevent head lifting and ensure engine longevity in demanding performance applications.

Fitment

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Specifications

BrandARP
Part NumberA00M 403-4301

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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