Mercury & Mariner Outboard Center Main Crankshaft Bearings

Discover OBParts’ premium selection of center main bearings explicitly designed for Mercury and Mariner outboard engines. These components provide robust support for the crankshaft, minimize friction, and ensure reliable performance for powerheads and short-block assemblies. Whether you're rebuilding your engine or replacing a worn part, our center main bearings are crafted to meet or exceed OEM specifications. Shop trusted brands, detailed part numbers, and expert guidance to keep your watercraft running smoothly, backed by fast shipping and knowledgeable service.