Gear Case Vent screw with gasket for gear cases of many smaller Mercury Outboards.

Gear Lube Drain screw with gasket for most Mercury lower units.  (Also used as vent screw in 1963 and newer 35HP and larger non-racing gear cases.)

Was 10-79953T2

This is used as both drain & vent on 1974 & prior models.  1975-76 use this for vent screw and 22-67892A06 magnetic drain screw.

SHEAR PIN - See model guide for application

This part fits both the drive shaft and the prop shaft for KE4, KE4A, KE7,  
Fits only the drive shaft on the KF7, KG4, KG4H, KG7, KG7H, Mark 7, 20H

Gear Grease- 105 Lubriplate replaces original gear grease in all 1, 2, & 4 cyl. Mercurys through 1961. This heavier lube should also be used in non-shift motors of other brands. 10 oz.

Note: Modern 90 weight gear lube is generally unacceptable in these engines.

LOWER UNIT SEAL KIT - KG4H, KG7H