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 O-Ring R047203

$4.44 - $4.44
$4.44
$4.44
$4.44 - $4.44
$4.44
Only 5 left!

Seal critical engine components and prevent leaks with the PCM O-Ring R047203. This genuine Pleasurecraft Marine (PCM) OEM O-ring is designed to pr...

View full details
$4.44 - $4.44
$4.44
$4.44
$4.44 - $4.44
$4.44

PCM O-Ring R047240

$2.96 - $2.96
$2.96
$2.96
$2.96 - $2.96
$2.96
Only 5 left!

Seal critical engine components and prevent fluid leaks with the PCM O-Ring R047240. This genuine Pleasurecraft Marine (PCM) OEM O-ring is designed...

View full details
$2.96 - $2.96
$2.96
$2.96
$2.96 - $2.96
$2.96

PCM O-Ring R047245

$1.42 - $1.42
$1.42
$1.42
$1.42 - $1.42
$1.42
in stock

Seal cooling or fuel system components and prevent leaks with the PCM O-Ring R047245. This genuine Pleasurecraft Marine (PCM) OEM O-ring is designe...

View full details
$1.42 - $1.42
$1.42
$1.42
$1.42 - $1.42
$1.42

PCM Thermostat Housing Gasket RM0001

$1.78 - $1.78
$1.78
$1.78
$1.78 - $1.78
$1.78
Only 1 left!

Seal the thermostat housing and maintain proper engine cooling with the PCM Thermostat Housing Gasket RM0001. This genuine Pleasurecraft Marine (PC...

View full details
$1.78 - $1.78
$1.78
$1.78
$1.78 - $1.78
$1.78

PCM Thermostat Housing Gasket RM0004

$3.67 - $3.67
$3.67
$3.67
$3.67 - $3.67
$3.67
Only 1 left!

Prevent coolant leaks and maintain proper engine cooling with the PCM Thermostat Housing Gasket RM0004. This genuine Pleasurecraft Marine (PCM) OEM...

View full details
$3.67 - $3.67
$3.67
$3.67
$3.67 - $3.67
$3.67

PCM Gasket RM0121

$8.83 - $8.83
$8.83
$8.83
$8.83 - $8.83
$8.83
Only 5 left!

Seal critical engine components and prevent leaks with the PCM Gasket RM0121. This genuine Pleasurecraft Marine (PCM) OEM gasket is designed for us...

View full details
$8.83 - $8.83
$8.83
$8.83
$8.83 - $8.83
$8.83

PCM Gasket RM0262A

$6.72 - $6.72
$6.72
$6.72
$6.72 - $6.72
$6.72
Only 1 left!

Seal exhaust system connections and prevent leaks with the PCM Gasket RM0262A. This genuine Pleasurecraft Marine (PCM) OEM gasket is designed for u...

View full details
$6.72 - $6.72
$6.72
$6.72
$6.72 - $6.72
$6.72

PCM Gasket RM0266

$6.55 - $6.55
$6.55
$6.55
$6.55 - $6.55
$6.55
Only 1 left!

Seal exhaust system connections and prevent leaks with the PCM Gasket RM0266. This genuine Pleasurecraft Marine (PCM) OEM gasket is designed for us...

View full details
$6.55 - $6.55
$6.55
$6.55
$6.55 - $6.55
$6.55

PCM Gasket RM0268

$31.88 - $31.88
$31.88
$31.88
$31.88 - $31.88
$31.88
Only 3 left!

Seal exhaust system connections and prevent leaks with the PCM Gasket RM0268. This genuine Pleasurecraft Marine (PCM) OEM gasket is designed for us...

View full details
$31.88 - $31.88
$31.88
$31.88
$31.88 - $31.88
$31.88

PCM Gasket RM0274A

$89.04 - $89.04
$89.04
$89.04
$89.04 - $89.04
$89.04
in stock

Seal critical exhaust system connections and prevent leaks with the PCM Gasket RM0274A. This genuine Pleasurecraft Marine (PCM) OEM gasket is desig...

View full details
$89.04 - $89.04
$89.04
$89.04
$89.04 - $89.04
$89.04

PCM Catalytic Converter Corner/Manifold Gasket RM0285

$10.37 - $10.37
$10.37
$10.37
$10.37 - $10.37
$10.37
Only 2 left!

Seal the connection between the exhaust manifold and catalytic converter with the PCM Catalytic Converter Corner / Manifold Gasket RM0285. This gen...

View full details
$10.37 - $10.37
$10.37
$10.37
$10.37 - $10.37
$10.37

PCM Catalytic Converter Corner/Crossover Gasket RM0286

$93.53 - $93.53
$93.53
$93.53
$93.53 - $93.53
$93.53
Only 2 left!

Seal the exhaust system connection and prevent leaks with the PCM Catalytic Converter Corner / Crossover Gasket RM0286. This genuine Pleasurecraft ...

View full details
$93.53 - $93.53
$93.53
$93.53
$93.53 - $93.53
$93.53

PCM Gasket RM0294

$12.96 - $12.96
$12.96
$12.96
$12.96 - $12.96
$12.96
Only 2 left!

Seal critical exhaust system components and prevent leaks with the PCM Gasket RM0294. This genuine Pleasurecraft Marine (PCM) OEM gasket i...

View full details
$12.96 - $12.96
$12.96
$12.96
$12.96 - $12.96
$12.96

PCM Catalytic Converter Corner/Crossover Gasket RM0299

$10.94 - $10.94
$10.94
$10.94
$10.94 - $10.94
$10.94
Only 2 left!

Seal the exhaust system connection and prevent leaks with the PCM Catalytic Converter Corner / Crossover Gasket RM0299. This genuine Pleasurecraft ...

View full details
$10.94 - $10.94
$10.94
$10.94
$10.94 - $10.94
$10.94

PCM Gasket RM0309

$17.40 - $17.40
$17.40
$17.40
$17.40 - $17.40
$17.40
Only 4 left!

Seal critical engine components and prevent fluid leaks with the PCM Gasket RM0309. This genuine Pleasurecraft Marine (PCM) OEM gasket is designed ...

View full details
$17.40 - $17.40
$17.40
$17.40
$17.40 - $17.40
$17.40

Mercury MerCruiser Gasket 8M0090319

$6.17 - $6.17
$6.17
$6.17
$6.17 - $6.17
$6.17
Only 4 left!

Mercury MerCruiser Gasket – 8M0090319 Maintain proper cooling system sealing with the Mercury MerCruiser Gasket 8M0090319. This genuine Mercury OEM...

View full details
$6.17 - $6.17
$6.17
$6.17
$6.17 - $6.17
$6.17

Mercury MerCruiser Gasket 8M0092920

$186.86 - $186.86
$186.86
$186.86
$186.86 - $186.86
$186.86
Only 2 left!

Mercury MerCruiser Gasket – 8M0092920 Maintain proper engine sealing with the Mercury MerCruiser Gasket 8M0092920. This genuine Mercury OEM gasket ...

View full details
$186.86 - $186.86
$186.86
$186.86
$186.86 - $186.86
$186.86

Mercury MerCruiser Seal 8M0204680

$6.44 - $6.44
$6.44
$6.44
$6.44 - $6.44
$6.44
Only 2 left!

Mercury MerCruiser Seal – 8M0204680 Maintain proper sealing and gear housing protection with the Mercury MerCruiser Seal 8M0204680. This genuine Me...

View full details
$6.44 - $6.44
$6.44
$6.44
$6.44 - $6.44
$6.44

Mercury MerCruiser O-Ring 8M0204684

$3.74 - $3.74
$3.74
$3.74
$3.74 - $3.74
$3.74
in stock

Mercury MerCruiser O-Ring – 8M0204684 Maintain a proper seal in your marine engine or drive system with the Mercury MerCruiser O-Ring 8M0204684. Th...

View full details
$3.74 - $3.74
$3.74
$3.74
$3.74 - $3.74
$3.74

Mercury MerCruiser Gasket 8M0108647

$28.97 - $28.97
$28.97
$28.97
$28.97 - $28.97
$28.97
Only 4 left!

The Mercury Quicksilver 8M0108647 Gasket (Mercury format 27-8M0108647) is a genuine OEM fuel pump mounting gasket and spacer used on select MerCrui...

View full details
$28.97 - $28.97
$28.97
$28.97
$28.97 - $28.97
$28.97

Mercury MerCruiser Bellows Assembly 8M0124227

$63.41 - $63.41
$63.41
$63.41
$63.41 - $63.41
$63.41
Only 3 left!

Mercury / MerCruiser Quicksilver Bellows Assembly — 8M0124227 The Mercury Quicksilver 8M0124227 Bellows Assembly is a genuine OEM exhaust bell...

View full details
$63.41 - $63.41
$63.41
$63.41
$63.41 - $63.41
$63.41

Mercury MerCruiser Drive Gasket Set 64818T4

$27.04 - $27.04
$27.04
$27.04
$27.04 - $27.04
$27.04
Only 2 left!

Mercury / MerCruiser Quicksilver Drive Gasket Set — 64818T4 The Mercury Quicksilver 64818T4 (Mercury format 27-64818T4) is a genuine OEM drive / b...

View full details
$27.04 - $27.04
$27.04
$27.04
$27.04 - $27.04
$27.04

Mercury MerCruiser Lower Gasket 8M0142616

$14.11 - $14.11
$14.11
$14.11
$14.11 - $14.11
$14.11
Only 1 left!

The Mercury Quicksilver 8M0142616 (Mercury format 27-8M0142616) is a genuine OEM lower face-plate gasket used in the gearcase / water pump assembly...

View full details
$14.11 - $14.11
$14.11
$14.11
$14.11 - $14.11
$14.11

Mercury MerCruiser Water Pump Gasket 879150138

$14.27 - $14.27
$14.27
$14.27
$14.27 - $14.27
$14.27
Only 4 left!

Mercury / MerCruiser Quicksilver Water Pump Gasket — 879150138 The Mercury Quicksilver 879150138 (Mercury format 27-879150138) is a genuine OEM ci...

View full details
$14.27 - $14.27
$14.27
$14.27
$14.27 - $14.27
$14.27