Sierra 18-4915 Starter Rope The Sierra 18-4915 Starter Rope is interchangeable with the following: Chrysler/Force/US Marine: 50-12066, 50-12066A9, Mercury 50-12066Q9, 50-12066A9, 50-12066Q10, 50-45093, 50-28985A2, 50-12066A1, 50-22791A1, 50-28985A1, 50-30823A1, 50-61575A1, 50-812639, 50-86855, 92698M, 50-83586M, 50-82122M, 50-81306M, 50-80040M, 50-95285, 50-89141, 79629A1, 50-61575A2, 50-28958, 50-25348A1, 50-22268A1, 20589A1, 50-21116A1, 50-20169A1, 50-20168A1. Each Sierra product meets or exceeds the original equipment part it replaces. Sierra Starter Rope Meets or exceeds the original equipment quality Sierra part number: 18-4915