ARP 200-8202 Self-Locking 12-Point Cylinder Head Fastener Kit

The ARP 200-8202 cylinder head fastener kit features self-locking 12-point nuts designed for high-stress, high-temperature applications with severe vibration. These premium fasteners provide reliable engine assembly with superior locking capability without thread damage.

Key Features:

• Self-locking 12-point design for reduced wrenching and easier installation
• Elliptically offset upper portion creates elastic deformation for positive friction lock
• Temperature resistant construction maintains clamping force under extreme heat
• Almost indefinitely reusable without loss of locking capability
• Lightweight single-piece construction for weight-conscious builds
• Carbon-alloy steel with cadmium and chromate finish for corrosion resistance

ARP fasteners are engineered to provide consistent torque values and superior clamping force compared to OEM hardware. The self-locking mechanism eliminates the need for lock washers or thread-locking compounds, while the 12-point head design provides multiple engagement points for easier access in tight spaces.