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You are here:Home > "Mark" Models > Mark 25 > 1955 Hurricane 18hp (860979 thru 906751) > Lower Unit
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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.
DRIVE SHAFT SEAL
List Price: $11.80
Our Price: $10.00
You save $1.80!

Fits Mark 25, 25E, 30 & 30E
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
WATER PUMP IMPELLER
Our Price: $24.99

NLA impeller for KH7, Mark 15, 20, 25, 30, & Wizard models with gearshift.
BALL BEARING
Our Price: $46.14

Fits KH7, Mark 15, 20, 25, 25E, 30, 30E
Mercury 200
LOWER UNIT SEAL KIT
Our Price: $54.55

Lower Unit Seal Kit contains all lower unit seals for KH7, Mark 15, Mark 20, 1955 Mark 25 or early Mark 30 with 1" O.D. prop shaft seal.)