Skip to content
Celebrating 50 years of Trusted Marine Service
50 years of Trusted Marine Service

Marine Gaskets, Seals & O-Rings

Marine Engine Gaskets, Seals & O-Rings

Complete selection of marine engine gaskets, seals, and O-rings for reliable sealing and leak prevention. From cylinder head gaskets to oil seals, water pump gaskets, and precision O-rings for all marine engine applications.

Product Categories:

  • Engine Gaskets: Cylinder head gaskets, exhaust manifold gaskets, valve cover gaskets, and oil pan gaskets
  • Water Pump Gaskets & Seals: Impeller housing gaskets, water pump seals, and cooling system gaskets
  • Oil Seals: Crankshaft seals, camshaft seals, and transmission seals
  • O-Rings: Precision O-rings in various sizes and materials for fuel, oil, and water systems
  • Exhaust Gaskets: Exhaust manifold gaskets, riser gaskets, and exhaust system seals
  • Gasket Sets & Kits: Complete gasket sets for engine rebuilds and major service

All gaskets and seals are marine-grade with materials designed for saltwater environments, high temperatures, and chemical resistance. Essential for engine maintenance, repairs, and preventing leaks in fuel, oil, and cooling systems.

Filters

$
$

PCM Gasket RM0258A

$7.82 - $7.82
$7.82
$7.82
$7.82 - $7.82
$7.82
Only 3 left!

Seal critical exhaust system connections and prevent leaks with the PCM Gasket RM0258A. This genuine Pleasurecraft Marine (PCM) OEM gasket is desig...

View full details
$7.82 - $7.82
$7.82
$7.82
$7.82 - $7.82
$7.82

Mercury MerCruiser Vintage Bell Housing Oil Seal - 26-45587

$0.00 - $0.00
$0.00
$24.44
$24.44 - $24.44
$24.44
Only 2 left!

The Mercury MerCruiser Quicksilver 26-45587 is a genuine Mercury Marine OEM oil seal used in select vintage MerCruiser transom, bell housing, and r...

View full details
$0.00 - $0.00
$0.00
$24.44
$24.44 - $24.44
$24.44

Mercury Mariner Driveshaft Lower Unit Oil Seal - 26-43036

$0.00 - $0.00
$0.00
$29.27
$29.27 - $29.27
$29.27
Only 1 left!

The Mercury MerCruiser Quicksilver 26-43036 is a genuine Mercury Marine OEM upper driveshaft lower-unit oil seal used in select Mercury, Mariner, a...

View full details
$0.00 - $0.00
$0.00
$29.27
$29.27 - $29.27
$29.27

Mercury Mariner Lower Unit Gear Housing Seal Kit - 26-43035A4

$0.00 - $0.00
$0.00
$155.96
$155.96 - $155.96
$155.96
Only 1 left!

The Mercury MerCruiser Quicksilver 26-43035A4 is a genuine Mercury Marine OEM lower unit gear housing seal kit for select Mercury and Mariner outbo...

View full details
$0.00 - $0.00
$0.00
$155.96
$155.96 - $155.96
$155.96

Mercury Mariner Upper Driveshaft Oil Seal - 26-43035

$0.00 - $0.00
$0.00
$29.27
$29.27 - $29.27
$29.27
Only 1 left!

The Mercury MerCruiser Quicksilver 26-43035 is a genuine Mercury Marine OEM upper driveshaft oil seal used in select Mercury and Mariner outboard l...

View full details
$0.00 - $0.00
$0.00
$29.27
$29.27 - $29.27
$29.27

Mercury MerCruiser Fuel Pump Mounting Plate Gasket - 27-42457

$0.00 - $0.00
$0.00
$32.79
$32.79 - $32.79
$32.79
Only 1 left!

The Mercury MerCruiser Quicksilver 27-42457 is a genuine Mercury Marine OEM fuel pump mounting plate gasket used on select GM-based MerCruiser V6 s...

View full details
$0.00 - $0.00
$0.00
$32.79
$32.79 - $32.79
$32.79

Mercury MerCruiser Oil Adaptor Seal - 26-42077

$0.00 - $0.00
$0.00
$18.74
$18.74 - $18.74
$18.74
in stock

The Mercury MerCruiser Quicksilver 26-42077 is a genuine Mercury Marine OEM seal used in select MerCruiser oil-system and engine adapter assemblies...

View full details
$0.00 - $0.00
$0.00
$18.74
$18.74 - $18.74
$18.74

Mercury MerCruiser - Water Pump Gasket (Pack of 2) - 27-34897

$0.00 - $0.00
$0.00
$17.51
$17.51 - $17.51
$17.51
Only 4 left!

The Mercury MerCruiser Quicksilver Engine Water Pump Gasket 27-34897 is an OEM-style sealing gasket used with the sea water pump housing on compati...

View full details
$0.00 - $0.00
$0.00
$17.51
$17.51 - $17.51
$17.51

Mercury MerCruiser - Gasket - 344863

$0.00 - $0.00
$0.00
$3.97
$3.97 - $3.97
$3.97
Only 3 left!

The Mercury MerCruiser Quicksilver Distributor Base Gasket 27-344863 is an OEM-style sealing gasket used between the distributor base and engine bl...

View full details
$0.00 - $0.00
$0.00
$3.97
$3.97 - $3.97
$3.97

SIERRA 18-04761 Riser Block Off Gasket | Marine Exhaust Seal

$14.39 - $14.39
$14.39
$14.39
$14.39 - $14.39
$14.39
Only 2 left!

The SIERRA Riser Block Off Gasket - is designed to provide a dependable seal when an exhaust riser is removed, blocked off, or temporarily taken ou...

View full details
$14.39 - $14.39
$14.39
$14.39
$14.39 - $14.39
$14.39

Mercury MerCruiser Water Pump to Gear Housing Gasket - 27-85610

$0.00 - $0.00
$0.00
$2.35
$2.35 - $2.35
$2.35
Only 1 left!

The Mercury MerCruiser Quicksilver Water Pump to Gear Housing Gasket 27-85610 is an OEM-style base sealing gasket used between the lower water pump...

View full details
$0.00 - $0.00
$0.00
$2.35
$2.35 - $2.35
$2.35

Mercury MerCruiser Quicksilver Sea Water Pump Seal 26-806930

$0.00 - $0.00
$0.00
$29.99
$29.99 - $29.99
$29.99
Only 1 left!

The Mercury MerCruiser Quicksilver 26-806930 Seal is an OEM replacement sea water pump seal used on select MerCruiser sterndrive applications. It i...

View full details
$0.00 - $0.00
$0.00
$29.99
$29.99 - $29.99
$29.99

Honda - Gasket - 19351-ZV5-000

$0.00 - $0.00
$0.00
$6.58
$6.58 - $6.58
$6.58
Only 1 left!

The Honda 19351-ZV5-000 Gasket is a genuine Honda OEM sealing gasket used across a wide range of Honda BF-series outboards. It is designed for the ...

View full details
$0.00 - $0.00
$0.00
$6.58
$6.58 - $6.58
$6.58

Honda - O-Ring 6.9x1.45 - 91301-ZW4-003

$0.00 - $0.00
$0.00
$3.82
$3.82 - $3.82
$3.82
Only 4 left!

The Honda 91301-ZW4-003 O-Ring is a genuine Honda OEM sealing O-ring sized 6.9 x 1.45 mm. It is used across a wide range of Honda outboard applicat...

View full details
$0.00 - $0.00
$0.00
$3.82
$3.82 - $3.82
$3.82

Mercury 16755T1 Bravo Bell Housing Gasket Kit

$21.52 - $21.52
$21.52
$21.52 - $21.52
$21.52
Only 2 left!

Mercury MerCruiser Quicksilver 16755T1 is a genuine OEM bell housing installation gasket kit for MerCruiser Bravo drives. Mercury's current OEM pro...

View full details
$21.52 - $21.52
$21.52
$21.52 - $21.52
$21.52

Volvo Penta Cooling Water Pipe Gasket 21625080

$21.70 - $21.70
$21.70
$21.70 - $21.70
$21.70
Only 1 left!

The Volvo Penta Gasket 21625080 is a genuine OEM sealing gasket used in compatible Volvo Penta cooling-water pipe / engine cooling-system assemblie...

View full details
$21.70 - $21.70
$21.70
$21.70 - $21.70
$21.70

Volvo Penta Gasket Kit 876267

$273.00 - $273.00
$273.00
$273.00 - $273.00
$273.00
Only 2 left!

The Volvo Penta Gasket Kit 876267 is a genuine Volvo Penta lower gear unit gasket and sealing kit for compatible Volvo Penta sterndrive application...

View full details
$273.00 - $273.00
$273.00
$273.00 - $273.00
$273.00

Mercury MerCruiser Quicksilver O-Ring 31986

$6.87 - $6.87
$6.87
$6.87 - $6.87
$6.87
Only 3 left!

Mercury MerCruiser Quicksilver 25-31986 is a genuine Mercury Marine O-ring used as a sealing ring in select Mercury, Mariner, MerCruiser, and older...

View full details
$6.87 - $6.87
$6.87
$6.87 - $6.87
$6.87

Mercury MerCruiser Quicksilver Driveshaft Slinger Ring 30271

$2.91 - $2.91
$2.91
$2.91 - $2.91
$2.91
Only 5 left!

Mercury MerCruiser Quicksilver 25-30271 is a genuine Mercury Marine rubber ring used as a driveshaft / water pump housing slinger ring in select Me...

View full details
$2.91 - $2.91
$2.91
$2.91 - $2.91
$2.91

Mercury MerCruiser Quicksilver Water Pump Housing O-Ring 29439

$4.94 - $4.94
$4.94
$4.94 - $4.94
$4.94
Only 3 left!

Mercury MerCruiser Quicksilver 25-29439 is a genuine Mercury Marine O-ring used as a sealing ring in select Mercury, Mariner, and MerCruiser water ...

View full details
$4.94 - $4.94
$4.94
$4.94 - $4.94
$4.94

Mercury MerCruiser Quicksilver Washer 26825

$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26
Only 5 left!

Mercury MerCruiser Quicksilver 12-26825 is a genuine Mercury Marine washer specified as .328 in. x .750 in. x .060 in. It is used across a broad ra...

View full details
$2.26 - $2.26
$2.26
$2.26 - $2.26
$2.26

Mercury MerCruiser Quicksilver Shift Pin O-Ring 25007

$2.14 - $2.14
$2.14
$2.14 - $2.14
$2.14
Only 2 left!

Mercury MerCruiser Quicksilver 25-25007 is a genuine Mercury Marine O-ring used as a small sealing ring in supported Mercury, Force, and MerCruiser...

View full details
$2.14 - $2.14
$2.14
$2.14 - $2.14
$2.14

Mercury MerCruiser Quicksilver O-Ring 23145

$2.99 - $2.99
$2.99
$2.99 - $2.99
$2.99
in stock

Mercury MerCruiser Quicksilver 25-23145 is a genuine Mercury Marine O-ring used as a sealing ring in select Mercury, Mariner, MerCruiser, Mercury R...

View full details
$2.99 - $2.99
$2.99
$2.99 - $2.99
$2.99

Mercury MerCruiser Quicksilver Gimbal Housing Washer 21900

$5.09 - $5.09
$5.09
$5.09 - $5.09
$5.09
Only 4 left!

Mercury MerCruiser Quicksilver 12-21900 is a genuine Mercury Marine flat washer used in select MerCruiser sterndrive, transom, and gimbal housing a...

View full details
$5.09 - $5.09
$5.09
$5.09 - $5.09
$5.09