ARP Main Stud Kit for Toyota 2JZ-GTE 

When building a high-performance 2JZ-GTE, maintaining crankshaft stability and bottom-end integrity becomes critical under elevated boost and extreme cylinder pressure. The ARP Main Stud Kit is engineered to provide superior main cap clamping force and block stability compared to factory hardware, making it an essential upgrade for serious street and motorsport applications.

Manufactured from premium ARP 8740 alloy and heat-treated to 200,000 PSI tensile strength, these main studs are designed to withstand the extreme loads generated in high-horsepower turbocharged engines. Unlike factory main bolts, the stud design provides more accurate torque loading and improved main cap alignment, helping maintain consistent bearing clearances and crankshaft stability at high RPM.

Whether you're assembling a fully built drag engine, drift setup, or high-boost street car, this ARP main stud kit delivers the durability and reliability trusted by professional engine builders worldwide.

Proven in countless high-horsepower JZ builds, ARP fasteners are the industry standard for reinforcing Toyota’s legendary inline-six engines under the most demanding conditions.

Carefully selected for builders who demand proven performance without compromise.

Why Upgrade Your Main Studs?

Compared to factory main bolts:

✔ Increased bottom-end strength and crankshaft stability
✔ Superior clamping force for high-horsepower applications
✔ Improved main cap alignment and bearing retention
✔ Heat-treated ARP 8740 alloy construction
✔ Trusted by professional engine builders worldwide

Key Features

✔ Genuine ARP main stud kit
✔ Manufactured from premium ARP 8740 alloy
✔ Heat-treated to 200,000 PSI tensile strength
✔ Designed for extreme boost and high-RPM applications
✔ Improves block rigidity and main cap stability
✔ Ideal for street, drift, drag, and circuit builds

Technical Specifications

✔ Brand: ARP
✔ Part Number: AR8730
✔ ARP Reference: 203-5405
✔ Product Type: Main Stud Kit
✔ Material: ARP 8740 Alloy Steel
✔ Tensile Strength: 200,000 PSI
✔ Application: Main Cap Fastening and Bottom-End Reinforcement
✔ Engine Family: Toyota JZ-Series

Compatible Engines

✔ 2JZ-GTE

Shipping

🇪🇺 EU Delivery: 5–10 Business Days
🌍 International Delivery: 7–21 Business Days