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$51.99 (Out of stock) - Sierra 18-4353 Powerhead Gasket Set
Compare at $59.99
Part # 18-4353
Sierra
Replaces OEM part #
  • MERCURY MARINE 27-72486A32

  • Contains:
    ( 1 ) 18-0123 End Cap Cover Gasket, replaces O.E.# 27-25725
    ( 2 ) 18-0870 Transfer Port Cover Gasket, replaces O.E.# 27-27936-1
    ( 1 ) 18-0879 Adapter Plate Gasket, replaces O.E.# 27-30501-1
    ( 1 ) 18-0901 Driver Cap Gasket, replaces O.E.# 27-47190
    ( 2 ) 18-0103 Powerhead to Ext. Plate Gasket, replaces O.E.# 27-79650-1
    ( 1 ) 18-0938 Water Inlet Tube Gasket, replaces O.E.# 27-79797-1
    ( 1 ) 18-0942 Baffle Plate Gasket, replaces O.E.# 27-85491-2
    ( 1 ) 18-0137 Baffle Plate Gasket, replaces O.E.# 27-85492-2
    ( 1 ) 18-7421 O-Ring, replaces O.E.# 25-20415
    ( 1 ) 18-2507 Cyl Block Cover Gasket, replaces O.E.# 27-85487
    ( 2 ) 18-2800 Carb. Flange Gasket, replaces O.E.# 27-75791-1
    ( 1 ) 18-2810 Block Cover Gasket, replaces O.E.# 27-43777-2
    ( 1 ) 18-2823 Lower Water Pump Base to Face Plate Gasket, replaces O.E.# 27-32769, 27-19553
    ( 1 ) 18-2827 Upper Face Plate to Pump Body Gasket, replaces O.E.# 27-32770, 27-19551
    ( 1 ) 18-2825 Water Pump Base Gasket, replaces O.E.# 27-32771
    ( 1 ) 18-2841 Water Pump Base Gasket, replaces O.E.# 27-77417, 27-19552
    ( 2 ) 18-7151 O-Ring, replaces O.E.# 25-20081
    ( 1 ) 18-7153 O-Ring, replaces O.E.# 25-25439
    ( 1 ) 18-7115 O-Ring, replaces O.E.# 25-26722
    ( 1 ) 18-7155 O-Ring, replaces O.E.# 25-26855
    ( 1 ) 18-7160 O-Ring, replaces O.E.# 25-31986
    ( 1 ) 18-7197 O-Ring, replaces O.E.# 25-29619
    ( 2 ) 18-7413 O-Ring, replaces O.E.# 25-62702
    ( 1 ) 18-7804 Fuel Pump Kit, replaces O.E.# 23014A1
    ( 2 ) 18-2571 Carb Flange Gasket, replaces O.E.# 27-31402

This product typically leaves our warehouse in 1 business day.

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If a return meets the criteria mentioned above, merchandise must still be in brand-new, unused condition with all original packaging in good condition; all parts, accessories, manuals, and/or warranty cards included. Please note that all return merchandise must be accompanied by an RA (Return Authorization) number issued by iboats.com. To receive your RA number call our Customer Service Department toll-free at 1-800-914-1123, Tuesday-Friday, 10am-7pm EST, or email us at returns@iboats.com. We will provide further details on where and how to mail the merchandise. Please note that returns sent from rural Canadian addresses may take up to five weeks to process after the package is mailed.

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Qualifying items must be verifiable on the Internet or through a current printed advertisement. Items must be identical, in-stock new products and not sold through a membership club or auction site or any of the following offers, such as free offers, multiple discounts like “buy one, get one at half off”, special orders, special bundles, clearance sales, mail-in rebate offers, typographical errors, private sales, non-retail websites, promo discounts, or limited-time offers.  All price matching is at the discretion of iboats.com and is subject to change at any time. iboats reserves the right to limit quantities. Price-match products are not eligible for special offers or discounts.

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Product Families

mariner powerhead gasket sets
mariner powerhead gasket sets
mariner powerhead gasket sets-sierra 18-4353 powerhead gasket set
mariner powerhead gasket sets-sierra 18-4353 powerhead gasket set
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