The underwater gear oil drain and fill screw with gasket 8M0083059 is used on all Mercury and Mariner outboard motors manufactured in Japan with a metric 8x1.25 thread. The gasket is crucial to ensure that the screw is properly seated, the gear oil remains inside the housing, and water that could cause damage stays out.
Product Features
Fits 8x1.25 mm metric threads for drain and fill screws
For all Mercury and Mariner outboard motors manufactured in Japan
Non-magnetic screw version
Includes gasket for a secure seal
Benefits
Ensures that the gear oil remains inside the housing
Prevents water from entering, which could damage the gear
