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You are here:Home > Mercury Outboard Models > 1960 - 1963 > Merc 500 > 1961 50hp (1421113-1460498) > 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.
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.
BACKING WASHER
Our Price: $5.95

Backing washer for:
Mark 35A, 55, 55A, 58A
1960 - 1963 Merc 300, 350, 400, 450, 500
1964 - 1966 Merc 350
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.
PLATE
Our Price: $6.40

Stainless steel plate under screw-in water pump cover on 35-50HP models from 1954 thru 1961.
DRIVE/PROP SHAFT SEAL & WATER PUMP COVER SEAL
Our Price: $13.00

Drive shaft seal for Mark 35A, 55, 55A, 58, 58A, 75, 75H, 75A, 78, 78A, Merc 300, 350, 400, 450, 500, 600, 650, 700DR

Prop shaft seal for Mark 35A, 50, 55, 55A, 58, 58A, Merc 300, 350, 400, 450, 500

Water pump cover seal for Mark 75, 75A, 78, 78A, Merc 600
DRIVE/PROP SHAFT SEAL & WATER PUMP COVER SEAL
Our Price: $14.50

Drive shaft seal for Mark 50, 55

Prop shaft seal for Merc 350, 500

Water pump cover seal for Mark 35A, 50, 55, 55A, 58, 58A, 75H, Merc 300, 400, 350, 500, Merc 700
WATER PUMP IMPELLER
Our Price: $19.30

(Replaces 47-20268 & 47-65959)

The following gearshift models:
 all 2 cyl. 35 & 40 HP thru 1989
 all 3 cyl. 50 - 65 HP thru 1990
 all 3 cyl. 70 HP thru 1983
 all 4 cyl 35 - 50 HP
TAB WASHER
Our Price: $21.06

Mark 35A, 55, 55A, 58, 58A, Merc 300, 1961 Merc 350, 1960-61 Merc 400, 1961 Merc 500 (11 SPLINE)
PROP NUT
Our Price: $46.62

NLA MARK 35A, 50, 55, 55A, 58, 58A, Merc 300, 350 (4 cyl.), 400 (4 cyl. only), & 1961 Merc 500 Limited Quantity!