ARP 230-3701 Head Bolt Kit for LS9 Gen IV 6.2L Small-Block

Vehicle Fitment

• Chevrolet LS Gen IV 6.2L LS9 small-block (LS-series)

Features

• Cold-forged ARP2000® alloy for molecular integrity
• Heat-treated before thread rolling and machining
• 12-point head design with wide flange for even load distribution
• Rated at approximately 190,000 psi tensile strength
• Black oxide finish for corrosion resistance
• Includes hardened parallel washers for accurate torque readings
• Specifically engineered as a direct replacement for factory head bolts
• Ideal upgrade for performance and high-stress engine use

Specifications

• Fastener Material: ARP2000® alloy
• Tensile Strength: ~190,000 psi
• Finish: Black oxide
• Head Style: 12-point with wide flange
• Socket Sizes: 9/16" 12-point and 10 mm 12-point
• Includes washers: Yes, hardened parallel types

Included Components

• 10x ARP2000® head bolts
• 10x hardened parallel-ground washers
• 1x assembly lubricant packet
• Installation instructions

Product Description

The ARP 230-3701 Head Bolt Kit is designed as a direct high-strength replacement for the OEM head bolts in the Chevrolet LS Gen IV 6.2L LS9 small-block engine. Utilizing ARP2000® alloy, these bolts are cold-forged for superior molecular integrity and heat-treated prior to thread rolling for optimal fatigue performance.

Featuring a 12-point head with wide flange, this kit ensures even load distribution and accurate torque application. Rated at approximately 190,000 psi tensile strength, the bolts are OEM-length replacements that deliver enhanced reliability for street performance, track builds, or high-stress applications.

Each kit includes hardened parallel washers, assembly lubricant, and instructions for precise installation. Whether you're reinforcing an existing build or upgrading from torque-to-yield hardware, the ARP 230-3701 kit offers a smart, durable upgrade.