Mercury - Conn rod assy - 614-8M0192261. The Mercury Conn rod assy - 614-8M0192261 is a factory-original connecting rod assembly engineered to meet Mercury Marine's high-performance standards. This durable component is designed for seamless integration with compatible Mercury engines, providing dependable crankshaft-to-piston motion under demanding marine conditions.. Key Features. OEM-Grade Construction - Manufactured to Mercury's exact tolerances for precision fit and performance. High-Tensile