ARP 234-2503 - ARP Balancer Bolts

ARP Balancer / Harmonic Damper Bolt Kit

• Designed for GM LS / small block / V-engine applications using a harmonic balancer (dampener).

• Many ARP part numbers cover Gen III / Gen IV LS series (LS1, LS2, LS3, LS6, LS7) applications.

• Example: ARP part 234-2503 is a harmonic balancer bolt for GM LS Gen III/IV engines.

• Some ARP kits are built for dry-sump or specific LS / LT / performance variants; always match bolt specifications (thread, length, washer style) to engine setup.

Key Features & Highlights

• Built to lock the balancer firmly to the crank, preventing slippage under high torque or flexing conditions.

• Features a 12-point head design that accepts a deep socket — reducing risk of stripping the head during installation.

• Washers included are often wide-area, thick washers (e.g. ¼ in nominal thickness) to better distribute clamping load and reduce bearing stress.

• Constructed from premium materials — chromoly steels, heat treated, to achieve high tensile strength (e.g. ARP’s 200,000 psi rating in many kits).

• Some kits are black oxide plated or coated for corrosion resistance while preserving strength.

• Each bolt is manufactured with precise tolerances, ensuring consistent seat and torque performance.