You are here:Home > Mercury Outboard Models > 1980 & newer > Merc 70 hp (3 cyl) > 1980 - 1983 > Lower Unit
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O RING

Mark 35A
Mark 50
Mark 55, 55A
Mark 75, 75A
Mark 75A
1960 Merc 300
1961 Merc 350
1984 - 1989 Merc 35 (2 cyl)
1963 - 1969 Merc 350
1980 - 1983 Merc 40 (2 cyl)
1989 - 1996 Merc 40 (4 cyl)
1960 - 1961 Merc 400
1970 - 1971 Merc 400 (2 cyl)
1972 - 1979 Merc 402
1986 - 1989 Merc 45 (4 cyl)
1962 - 1964 Merc 450 (2 cyl)
1986 - 1990 Merc 50 (3 cyl)
1980 - 1985 Merc 50 (4 cyl)
1965 - 1979 Merc 500
1984 - 1990 Merc 60 (3 cyl)
1972 - 1979 Merc 650 (3 cyl)
1977 - 1983 Merc 70 (3 cyl)
1960 - 1961 Merc 700 (6 cyl)
1960 - 1961 Merc 800 (6 cyl)

List Price: $1.00
Our Price: $0.85
You save $0.15!
TAB WASHER

Merc 402

List Price: $4.18
Our Price: $3.85
You save $0.33!
GEARCASE DRAIN SCREW WITH GASKET

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.

List Price: $5.70
Our Price: $4.35
You save $1.35!
DRAIN PLUG KIT

Drain Plug Kit fits MerCruiser sterndrives and outboard applications.

List Price: $6.16
Our Price: $5.50
You save $0.66!
PROP NUT KIT

Prop Nut Kit includes a special locking nut and two tab washers.  For use on Mercury/Mariner 30-60 hp. outboard engines.

List Price: $11.60
Our Price: $10.75
You save $0.85!
ANODE/TRIM TAB

Genuine Mercury sacrificial aluminum trim tab anode used on 1963 & newer 35 HP and larger models.

Fits most Mercury and Mariner 35HP and above and all Mercury Mercruiser (excluding Bravo drives).

List Price: $14.49
Our Price: $12.79
You save $1.70!
WATER PUMP IMPELLER

(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

List Price: $19.34
Our Price: $18.00
You save $1.34!
WATER PUMP KIT

Aftermarket Water Pump Impeller Kit (includes impeller, gaskets, wear plate, etc.) fits 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 50 HP 1963 and newer.

Our Price: $35.99
REPAIR KIT-W/P

Water pump repair kit
Fits the following motors:
35HP (2 cyl) serial# 6445653 and up
400 (40HP) serial# 2874704-3336257
402 (40HP) and 40HP serial# 3336258-G053313
45HP (4 cyl) serial# 5531630 and up
500 (50HP) and 50HP (4 cyl) serial# 2858814 and up
50HP and 60HP (3 cyl) serial# 6428681-D000749
70HP (3 cyl) serial# 4977157-6428680

List Price: $44.08
Our Price: $38.99
You save $5.09!
WATER PUMP KIT

Water Pump Repair kit for 40-70 HP gear units starting in 1977.  Includes upper and lower housings, gaskets, plate, impeller, and o-rings/ seals.  See model guide for specific engine applications.

List Price: $93.50
Our Price: $85.90
You save $7.60!
PINION GEAR

1986 - 1990 Merc 50 (3 cyl)
1984 - 1990 Merc 60 (3 cyl)
1980 - 1933 Merc 70 (3 cyl)

Our Price: $185.04
FORWARD GEAR ASSEMBLY

1986 - 1990 Merc 50 (3 cyl)
1984 - 1990 Merc 60 (3 cyl)
1980 - 1983 Merc 70 (3 cyl)

Our Price: $285.28