Water Pump Impeller Kit – Fits Mercury/Mariner 3.9-9.8 HP (Replaces Mercury 47-89980T1) 25hp 1 x O-Ring (8M0205803)

1 x O-Ring (8M0205803)

A thermostat stuck open will cause the engine to run too cool

Hardware included

4-cylinder 4-stroke 90–140 HP (DF90

Reconnect the throttle linkage and fuel line

Water Pump Impeller Kit – Fits Mercury/Mariner 3.9-9.8 HP (Replaces Mercury 47-89980T1) 25hp 1 x O-Ring (8M0205803)Product Details This Water Pump Impeller Kit Fits Mercury Mariner 3. 9 9. 8 HP (Replaces 47 89980T1) is designed for Mercury and Mariner 2 stroke outboard engines from 3. 9 HP to 9. 8 HP, manufactured between 1979 and 1986. It is specifically for models requiring an impeller with a 0. 438" inner diameter. This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, including Mercury 47 89980T1, Sierra 18 3006, GLM 700 12271,