Powerhead Gasket Set - Sierra (S18-4355)

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

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