ARP 200-8571 Insert Washers Set - 10-Piece

ARP 200-8571 Insert Washers are precision-engineered protective washers designed to prevent galling and hole collapse in high-stress applications. This 10-piece set is ideal for cylinder head bolt holes, mid-motor plates, and other high-wear areas where standard washers won't provide adequate protection.

Key Features:

• Fully CNC machined from premium thru-hardened 8740 chromoly steel for maximum durability
• Protects aluminum and other soft metals from damage around stud and bolt holes
• Simple press-fit installation into slightly oversized holes
• Prevents thread pull-out and material deformation under high clamping loads
• Perfect for engine builds, race applications, and performance installations

These insert washers are essential components when installing cylinder head studs or bolts in aluminum cylinder heads, where the hardened washer spreads the load and protects the softer head material from damage during torquing and under thermal cycling.