Marine Surplus offers a continually changing inventory of new Sierra Original Equipment Manufacturer (OEM) and aftermarket marine parts, including engine components, fuel system parts, cooling system parts, ignition parts, electrical components, filters, and other hard-to-find replacement parts. Known for quality replacement marine parts and broad product coverage, Sierra is trusted by boat owners and marine technicians worldwide. We sell only new surplus parts—not used or salvaged items. If you don't see the Sierra part you need, contact us and we'll check our inventory.