This product has been discontinued.
Sierra
Powerhead Gasket Set - 18-4355 - Sierra
Price: $56.11
 Discontinued
Save: $31.38
(35% Off $87.49)
Part # 18-4355
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(Discontinued)
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Replaces OEM part #
  • MERCURY MARINE 27-78028A78

    • Contains:
    ( 1 ) 18-0182 Thermostat Gasket, replaces O.E.# 27-62386
    ( 1 ) 18-0879 Adapter Plate Gasket, replaces O.E.# 27-38501-1
    ( 1 ) 18-0988 Powerhead to Plate Gasket, replaces O.E.# 27-62860-1
    ( 1 ) 18-0914 Thermostat Cover Gasket, replaces O.E.# 27-66847
    ( 1 ) 18-0938 Water Inlet Tube Gasket, replaces O.E.# 27-79797-1
    ( 1 ) 18-0940 Baffle Plate to Exhaust Gasket, replaces O.E.# 27-85488-2
    ( 1 ) 18-0105 Baffle Plate to Block Gasket, replaces O.E.# 27-85489-2
    ( 1 ) 18-7421 O-Ring, replaces O.E.# 25-20415
    ( 1 ) 18-7411 O-Ring, repalces O.E.# 25-35480
    ( 1 ) 18-2802 Carb Flange Gasket, replaces O.E.# 27-48164-1
    ( 1 ) 18-2805 Block Cover Gasket, replaces O.E.# 27-85490-2
    ( 1 ) 18-2823 Lower Water Pump Base to Face Plate Gasket, replaces O.E.# 27-19553
    ( 1 ) 18-2824 Upper Face Plate to Pump Body Gasket, replaces O.E.# 27-19551
    ( 1 ) 18-2825 Water Pump Base Gasket, replaces O.E.# 27-32771
    ( 1 ) 18-2838 Transfer Port Cover Gasket, replaces O.E.# 27-55279-1
    ( 1 ) 18-2841 Water Pump Base Gasket, replaces O.E.# 27-19552
    ( 1 ) 18-7115 O-Ring, replaces O.E.# 25-26722
    ( 2 ) 18-7143 O-Ring, replaces O.E.# 25-65936
    ( 3 ) 18-7145 O-Ring, replaces O.E.# 25-64068
    ( 1 ) 18-7153 O-Ring, replaces O.E.# 25-25439
    ( 1 ) 18-7155 O-Ring, replaces O.E.# 25-26855
    ( 1 ) 18-7160 O-Ring, replaces O.E.# 25-31986
    ( 1 ) 18-7167 O-Ring, replaces O.E.# 25-47254
    ( 1 ) 18-7412 O-Ring, replaces O.E.# 25-62457
    ( 3 ) 18-7413 O-Ring, replaces O.E.# 25-62702
    ( 1 ) 18-7414 O-Ring, replaces O.E.# 25-64067
    ( 1 ) 18-7827 Filter Screen, replaces O.E.# 35-59072
    ( 1 ) 18-7807 Fuel Pump Kit, replaces O.E.# 55278A1
    ( 1 ) 18-4261 Washer, replaces O.E.# 19643

    *Power Head gasket sets do not include head gaskets

Average Customer Review for Powerhead Gasket Set - 18-4355 - Sierra
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Every gasket you need for a complete rebuild
by Kyle from Saint Paul, Minnesota on April 27, 2012
This has every gasket you could need for a complete rebuild of a '78 Mercury 402 motor. They even separate the delicate gaskets for the fuel system into their own package.
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