- Lower unit drain screws require Johnson outboard washers.
Comes in pack of 5.
- Washers are not intended to be re-used.
Always install a new washer when re-installing drain screw.
- Aviation gasket compound required on paper style washer
(P/N 31170) for proper seal, only a coating of grease is required on nylon washer (P/N 31171) when pressure
- *Pressure test at 20 lbs
- OEM 307552 (paper), P/N 311598 (nylon)