The Sierra 18-3446 Water Pump Kit is interchangeable with the following: Mercury 46-70941A3. Each Sierra product meets or exceeds the original equipment part it replaces. Fits: 45/4.5 hp and 4 hp, 1 cylinder O/B’s with a .456″ I.D. water impeller.
Sierra Water Pump Kit
Meets or exceeds the original equipment quality
Fits: 45/4.5 hp and 4 hp, 1 cylinder O/B’s with a .456″ I.D. water impeller
Interchangeable with the following: Mercury 46-70941A3
