The small hardware you ignore is often the first to fail-unless it's a Mercury Stainless-Steel Washer (12-8M0204648). Cut to a generous 1.50" ID × 3.05" OD and 0.13" thick, this heavy-gauge spacer sits under the engine-mount nuts on late-model V-6 and V-8 FourStroke outboards, spreading clamping force so your mount pads stay tight and your transom stays quiet.. Forged from 316 stainless and polished to a mirror sheen, the washer laughs at salt spray, road grime, and the galvanic buzz that chews up plain steel. A deburred edge protects paint and gelcoat, while the flat-ground faces keep torque readings true-no springy flex, no creeping fasteners after a weekend of chop.. Why swap in genuine Mercury hardware?. Exact OEM dimensions-slides over 1-1/2" studs without slop, seats flush in mounting pockets.. Corrosion armor-316 stainless resists pitting, staining, and electrolysis attack.. Even load distribution-protects rubber isolators and prevents bolt-head dig-in.. Sold individually-order