Water Pump Impeller Kit – Fits Mercury 4–9.8 HP (Replaces 46-70941A3) 80HP Sierra 18-0128 Direct aftermarket replacement

Sierra 18-0128 Direct aftermarket replacement

and keyway from the kit

Brand Part Number Yamaha 6Y1-24306-55 JLM Marine 5/16-IN-6

Provides 10-micron filtration to capture fine particles and protect sensitive fuel injectors

2L V8 4-Stroke 1987–2016 807252Q5 Standard cooling only

Water Pump Impeller Kit – Fits Mercury 4–9.8 HP (Replaces 46-70941A3) 80HP Sierra 18-0128 Direct aftermarket replacementProduct Details This Water Pump Impeller Kit Fits Mercury 49. 8 HP (Replaces 46 70941A3) is designed for Mercury Marine 2 stroke outboard motors, including 4 HP, 4. 5 HP, 7. 5 HP, and 9. 8 HP models manufactured between 1975 and 1986. It restores cooling system performance to prevent overheating and ensure engine reliability. It serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 46 70941A3, Sierra 18 3446,