S/S Flat Washers - 3/8 ID x .715 OD (2pk)

The S/S Flat Washers - 3/8 ID x .715 OD (2pk) by ARP are essential fastening components engineered for high-performance automotive assembly and engine builds. These stainless steel washers distribute load evenly across bolt heads and threaded fasteners, preventing surface marring and reducing stress concentration on critical engine components. Whether you're assembling a stroker motor, rebuilding a cylinder head, or securing intake manifolds and accessory brackets, flat washers are non-negotiable for professional-grade workmanship and long-term reliability.

Constructed from premium stainless steel, these washers feature a 3/8 inch inner diameter (ID) and 0.715 inch outer diameter (OD), making them ideal for 3/8-inch fasteners commonly used in engine block work, head gasket surfaces, and structural chassis modifications. Stainless steel construction resists corrosion and oxidation, critical for engine bay environments exposed to heat cycles, moisture, and road salt. The two-pack format ensures you have backup washers on hand for reassembly or future modifications without inventory gaps during project work.

Professional mechanics and serious engine builders rely on ARP fastener components to maintain torque accuracy and prevent fastener failure under boost or high RPM conditions. These washers pair seamlessly with ARP bolts, studs, and fastening systems across LS, small-block Chevy, big-block, and forced-induction applications. Use them whenever reassembling cylinder heads, intake plenums, or oil pan gaskets to guarantee even clamp load distribution and eliminate thread stripping or bolt pull-through on aluminum or soft cast iron surfaces.