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You are here:Home > "Mark" Models > Mark 30H > Lower Unit
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SHEAR PIN
Our Price: $1.25

SHEAR PIN - See model guide for application
VENT SCREW KIT
List Price: $2.90
Our Price: $1.95
You save $0.95!

Gear Case Vent screw with gasket for gear cases of many smaller Mercury Outboards.
GEARCASE DRAIN SCREW WITH GASKET
List Price: $5.70
Our Price: $4.35
You save $1.35!

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.
GEAR LUBE
Our Price: $7.80

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 PROP SHAFT SEAL, DRIVE SHAFT SEAL & WATER PUMP COVER SEAL
List Price: $18.50
Our Price: $12.50
You save $6.00!

Lower unit prop shaft seal for KF7, KG4, KG7, KH7, Mark 15, 20, 25

This the driveshaft seal on the KH7.

This is the water pump cover seal for the Merc 200
DRIVE SHAFT BALL BEARING
Our Price: $18.10

Mark 30H, 55H
DRIVE SHAFT/ PROP SHAFT BEARING
Our Price: $21.35

Drive shaft bearing for Mark 10, 10A, 15A, 28, 28A, 30H, 55H, Merc 100, 150, 200 & 250

Prop shaft bearing for Mark 5, 6, 6A, KF5 & KF3
DRIVE SHAFT ROLLER BEARING
Our Price: $24.50

Mark 20H
Mark 30H, 55H
PROP SHAFT BALL BEARING
Our Price: $26.85

Mark 20H
Mark 30H, 55H
PROP SHAFT BALL BEARING
Our Price: $32.35

Mark 20H, 30H, 55H