ARP 200-8591 Chrome Moly Hardened Washer Set (2-Piece)

These premium washers are precision-manufactured from chrome moly steel and feature a no-chamfer design for maximum clamping surface contact.

Key Features:

• Constructed from premium chrome moly steel for superior strength and durability
• Parallel-ground surfaces ensure even load distribution and precise torque readings
• Hardened and heat-treated to prevent deformation under high clamping loads
• Black oxide finish provides corrosion resistance and professional appearance
• No I.D. chamfer design maximizes bearing surface area
• Precision-ground to tight tolerances for consistent fastener performance

ARP washers are essential components for high-performance engine builds where accurate torque readings and maximum clamping force are critical. The parallel-ground surfaces eliminate variations caused by warped or uneven washers, while the hardened construction prevents embedding into softer materials. Ideal for use with ARP cylinder head studs, main studs, and rod bolts where precise fastener preload is required.