Black Washer - 18mm ID x 2.900 OD (1pk) Chamfer

The ARP Black Washer — 18mm ID x 2.900 OD (1pk) Chamfer is a precision fastener component designed for high-performance applications in automotive and motorsports. This washer is essential for ensuring proper load distribution and clamping integrity in critical bolt applications, making it ideal for engine assembly, cylinder head work, and suspension modifications.

Constructed from high-quality steel, this washer features an 18mm inner diameter and a 2.900-inch outer diameter with a precision-chamfered edge. The chamfered profile reduces stress concentration, improves load distribution, and protects component surfaces during assembly and disassembly. Additionally, the black oxide finish provides mild corrosion resistance and helps prevent galling during installation.

Whether you're building a competition engine or upgrading factory fastener systems, the ARP Black Washer is fundamental to maintaining proper preload and preventing bolt pull-through. This washer is particularly beneficial for those engaged in high-performance automotive projects, ensuring longevity and reliability under vibration and thermal cycling.