ARP M10 U-Bolt Head Stud Kit Premium Grade 10.9

Description

Product Overview

The ARP 201-4304 Head Stud Kit is engineered for high‑performance applications where strength, precision, and durability are non‑negotiable. Constructed from premium grade 10.9 alloy steel, each stud features a M10 x 1.5mm thread with a right‑hand thread style, ensuring a tight, repeatable fit. The round head is finished with a durable painted coating that resists corrosion and maintains a clean appearance even under extreme engine bay temperatures. Designed specifically for the 20V Toyota 1.6L 4AGE engine, the kit includes all necessary components to replace factory bolts with a stronger, more reliable solution. Dimensions of the package are 9 x 4 x 3 inches, weighing 2.86 pounds, and it ships in a compact box measuring 15.24 cm L × 20.32 cm W × 25.4 cm H.

Usage

This head stud kit is ideal for performance enthusiasts, race teams, and daily drivers who demand consistent torque retention and high shear strength. Install the studs when rebuilding or upgrading the cylinder head on a Toyota 1.6L 4AGE engine, whether for street tuning, track days, or competitive motorsport. The robust design tolerates higher boost pressures and elevated combustion forces, making it suitable for turbocharged or supercharged builds. Proper installation requires standard torque tools; follow ARP’s torque specifications to achieve optimal clamping force and prevent head warpage.

Why Choose Us

ARP is a globally recognized manufacturer of high‑performance fasteners, and this kit reflects the brand’s commitment to engineering excellence. Each stud undergoes rigorous heat‑treatment processes to achieve Grade 10.9 hardness, guaranteeing superior tensile and shear capabilities compared to OEM bolts. The painted exterior finish provides added corrosion resistance, extending service life in harsh environments. Made in the United States, the kit adheres to strict quality control standards, and the included components are matched to OEM specifications for a seamless fit. Customer reviews consistently rate the product 5.0 stars, highlighting its reliability and ease of installation.

Key Features

• Grade 10.9 alloy steel delivers high tensile and shear strength for demanding engine applications.
• Precise M10 x 1.5mm right‑hand thread ensures a secure, repeatable fit.
• Durable painted finish resists corrosion and maintains appearance under high heat.
• Specifically engineered for the 20V Toyota 1.6L 4AGE cylinder head.
• Comes complete with all necessary studs and hardware for a full head replacement.

FAQ

What torque specifications should I use for the ARP head studs?

ARP recommends a torque of 70 Nm (52 lb‑ft) for the head studs on a Toyota 1.6L 4AGE engine, followed by a final angle turn of 90 degrees. Always consult the latest ARP torque chart for your specific application.

Can these studs be used on engines other than the Toyota 4AGE?

While the kit is optimized for the 4AGE, the M10 thread size and Grade 10.9 material make it compatible with other engines that use the same bolt pattern, provided the head thickness and clearance are verified.

Is any additional hardware required for installation?

The kit includes all studs, nuts, and washers needed for a complete head replacement. No extra hardware is required unless you are upgrading to a different head design that calls for additional components.

How does the painted finish hold up under high‑temperature conditions?

The paint is a high‑temperature epoxy coating formulated to withstand engine bay temperatures up to 300 °C (572 °F) without degrading, ensuring long‑term corrosion resistance.

What warranty does ARP provide for this product?

ARP offers a limited lifetime warranty against material defects for the head stud kit, reflecting confidence in the product’s durability and manufacturing quality.