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You are here:Home > "Mark" Models > Mark 25 > 1956-58 Hurricane 20hp (956420 thru 1051986) > Lower Unit
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VENT SCREW KIT
Our Price: $1.79

Gear Case Vent screw with gasket for gear cases of many smaller Mercury Outboards.
WATER TUBE PLATE
Our Price: $4.00

Water Tube Plate for:
KH7, Mark 15, 20, 25, 25E & 30.
GEARCASE DRAIN SCREW WITH GASKET
Our Price: $5.00
Sale Price: $4.25
You save $0.75!

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.
PROP SHAFT SEAL
Our Price: $5.05

Mark 25, 30
GEAR LUBE
Our Price: $6.20

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.
PROP NUT TAB WASHER
Our Price: $7.50

Mark KH7, Mark 15, 20, 25, 30
DRIVE SHAFT SEAL
Our Price: $10.00

Fits Mark 25, 25E, 30 & 30E
LOWER UNIT PROP SHAFT SEAL, DRIVE SHAFT SEAL & WATER PUMP COVER SEAL
Our Price: $11.92

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
GEARCASE COVER
Our Price: $27.45

Gearcase cover ahead of propeller fits KH7, Mark 15, Mark 20, Mark 25, & Mark 30.
WATER PUMP COVER
Our Price: $35.33

Water Pump cover used on Mercury models KH7, Mark 15, Mark 20, Mark 25, Mark30 & all Wizard models with full gear shift.