New Mercury & Mariner Outboard Internal Wiring Harnesses

Please explore our complete line of internal wiring harnesses, explicitly designed for Mercury & Mariner outboard engines. These harnesses are crafted to OEM standards for durability and dependable ignition performance. We offer harnesses compatible with 2-, 3-, 4-, and 6-cylinder configurations, along with harness adapters to ensure seamless integration. Whether you're replacing worn-out engine wiring or completing a fresh rebuild, trust our marine-grade electrical wiring harness solutions—and enjoy fast shipping and expert support.