ARP 200-8567 Insert Washers for Cylinder Head Studs - 2-Piece Set

ARP 200-8567 Insert Washers are precision-engineered protective washers designed to prevent galling and hole collapse around high-stress cylinder head studs and bolts. This 2-piece set is ideal for cylinder head bolt holes, mid-motor plates, and other high-wear applications where standard washers won't provide adequate protection.

Key Features:

• CNC machined from premium thru-hardened 8740 chromoly steel for maximum strength and durability
• Protects aluminum and cast iron from damage caused by high bolt loads
• Easy press-fit installation into slightly oversized holes
• Prevents thread pull-through and material deformation in high-torque applications
• Precision machined to exacting tolerances for consistent performance

These insert washers are essential for serious engine builds where cylinder head clamping loads can exceed the material strength of the block deck surface. The thru-hardened 8740 steel construction distributes fastener loads over a larger area while resisting deformation under extreme cylinder pressures.