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Over 50 years of Trusted Marine Service

Marine Gaskets, Seals & O-Rings

Marine Gaskets, Seals & O-Rings

Engine Gaskets, O-Rings, Oil Seals, Water Seals, Bellows, Washers & Sealing Kits

Shop marine gaskets, seals, O-rings, sealing washers, bellows, and service kits for engines, drives, cooling systems, fuel systems, exhaust, pumps, filters, housings, and routine maintenance repairs.

Shop Gaskets & Seals Engine Gaskets O-Rings
Fitment Check

Match sealing parts by engine brand, serial number, drive model, part number, service location, material, size, and the fluid or pressure being sealed.

Ask Parts Desk

Gaskets and seals can look simple, but the wrong thickness, profile, material, or diameter can cause leaks, overheating, water intrusion, or repeat service work.

Find Sealing Parts Faster

Search by Part Number, Engine, Drive, Size, or Service Area

Use the search box for exact part numbers, engine serial numbers, drive models, gasket sets, O-rings, oil seals, water pump gaskets, exhaust gaskets, fuel seals, and seal kits.

Engine Sealing

Gaskets for Maintenance, Repairs, and Reassembly

Engine sealing parts include valve cover gaskets, head gaskets, intake gaskets, oil pan gaskets, timing cover seals, thermostat gaskets, pump gaskets, sealing washers, and O-rings.

Oil Pan GasketsIntake GasketsRocker Cover Gaskets

Water, Oil & Drive Sealing

Seals That Keep Fluids Where They Belong

Oil seals, water seals, shaft seals, drive seals, bellows, drain plug washers, pump cover gaskets, and O-rings help keep oil in, water out, and systems protected.

Shaft SealsWater Pump GasketsPlug Washers
LOC

Match the Exact Location

A seal for a pump, drive, cooler, injector, filter, or drain plug may have a similar name but a different size, material, or profile.

SER

Use Serial Numbers

Sealing parts can change across engine families and production ranges. Serial number and part number are the best starting points.

KIT

Check Related Parts

Some repairs need several sealing parts at once: gaskets, O-rings, washers, clamps, bellows, hardware, sealant, or service kits.

Fitment Guidance

Small Sealing Parts Can Decide the Whole Repair

A wrong gasket or seal can lead to leaks, overheating, fuel smell, oil contamination, water intrusion, exhaust leaks, or repeat labor. Search by the original part number when possible, or send the Parts Desk the engine and service details.

Ask Parts DeskGasket KitsSealing Rings
Have the old part handyPhotos of the gasket, seal, O-ring, package label, or service location can help confirm the correct replacement.
Search clearlyTry part number first, then engine brand plus the exact item: exhaust gasket, shaft seal, impeller O-ring, or drain washer.
Confirm material and sizeO-rings and seals may differ by fluid type, diameter, thickness, shape, temperature range, and pressure.
Inspect the surfaceClean sealing surfaces, damaged housings, corrosion, worn shafts, and improper sealant can cause repeat leaks.

Gaskets, Seals & O-Rings FAQ

Choosing the Right Sealing Parts

Should I search by part number or by the part name?

Search by part number first whenever possible. If you do not have it, search by engine brand, serial number, and the exact sealing location.

Are O-rings, gaskets, and seals interchangeable?

No. O-rings, flat gaskets, sealing washers, and oil seals are designed for different surfaces, fluids, pressures, and movement. Match the original style and fitment.

Should I replace related sealing parts during service?

Often, yes. Many jobs also need O-rings, washers, bellows, clamps, hardware, or a service kit so the repair can be completed cleanly.

Can the Parts Desk help identify a gasket or seal?

Yes. Send the engine or drive serial number, old part number if available, photos, measurements, and where the part installs.

Shop Marine Gaskets, Seals & O-Rings

Find the sealing parts needed to finish marine engine, drive, cooling, fuel, exhaust, pump, filter, and maintenance repairs with confidence.

Shop Gaskets & SealsConfirm Fitment

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Mercury MerCruiser Distributor Cap Gasket - 27-805760

$7.93 - $7.93
$7.93
$7.93
$7.93 - $7.93
$7.93
Only 5 left!

The Mercury MerCruiser Quicksilver 27-805760 is a genuine Mercury Marine OEM distributor cap gasket used on select MerCruiser gasoline engines with...

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$7.93 - $7.93
$7.93
$7.93
$7.93 - $7.93
$7.93

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...

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$7.82 - $7.82
$7.82
$7.82
$7.82 - $7.82
$7.82

PCM O-Ring 20156

$5.45 - $5.45
$5.45
$5.45
$5.45 - $5.45
$5.45
Only 2 left!

PCM O-Ring — Part #20156 This genuine PCM OEM O-ring is a precision sealing replacement for Pleasurecraft Marine inboard engines. O-rings are used ...

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$5.45 - $5.45
$5.45
$5.45
$5.45 - $5.45
$5.45

PCM O-Ring 22800

$1.20 - $1.20
$1.20
$1.20
$1.20 - $1.20
$1.20
in stock

PCM O-Ring — Part #22800 This genuine PCM OEM O-ring is a precision sealing replacement for Pleasurecraft Marine inboard engines. O-rings are used ...

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$1.20 - $1.20
$1.20
$1.20
$1.20 - $1.20
$1.20

PCM O-Ring 22802

$1.48 - $1.48
$1.48
$1.48
$1.48 - $1.48
$1.48
Only 1 left!

PCM O-Ring — Part #22802 This genuine PCM OEM O-ring is a precision sealing replacement for Pleasurecraft Marine inboard engines. O-rings are used ...

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$1.48 - $1.48
$1.48
$1.48
$1.48 - $1.48
$1.48

PCM Gasket 96216

$7.76 - $7.76
$7.76
$7.76
$7.76 - $7.76
$7.76
Only 3 left!

PCM Gasket — Part #96216 This genuine PCM OEM gasket is a precision sealing replacement for Pleasurecraft Marine inboard engines. Engine gaskets cr...

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$7.76 - $7.76
$7.76
$7.76
$7.76 - $7.76
$7.76

PCM Engine Cooling System Gasket | 97361

$0.00 - $0.00
$0.00
$3.82
$3.82 - $3.82
$3.82
Only 2 left!

PCM Engine Cooling System Gasket | 97361A small part with an outsized job. This OEM-specification gasket seals a mating face in the PCM engine cool...

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$0.00 - $0.00
$0.00
$3.82
$3.82 - $3.82
$3.82
Sierra 42489 Drain/Fill Plug Washer (5/pk)

Sierra Drain/Fill Plug Washer for OMC Sterndrive & Cobra – 42489 – Pack of 5

$13.59 - $13.59
$13.59
$13.59 - $13.59
$13.59

A proper seal at the gear lube drain and fill ports is essential for protecting your lower unit. This Sierra sealing washer is designed to crush sl...

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$13.59 - $13.59
$13.59
$13.59 - $13.59
$13.59

Mercury - Sea Water Pump Gasket - 27-881603001

$0.00 - $0.00
$0.00
$69.15
$69.15 - $69.15
$69.15
Only 4 left!

The Mercury MerCruiser Quicksilver 27-881603001 Sea Water Pump Gasket is an OEM replacement gasket for select high-displacement MerCruiser sterndri...

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$0.00 - $0.00
$0.00
$69.15
$69.15 - $69.15
$69.15

Kohler - Water Outlet Gasket - 229963

$0.00 - $0.00
$0.00
$4.86
$4.86 - $4.86
$4.86
Only 4 left!

The Kohler 229963 Water Outlet Gasket is a cooling-system sealing gasket used on compatible liquid-cooled Kohler marine and industrial generator en...

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$0.00 - $0.00
$0.00
$4.86
$4.86 - $4.86
$4.86

Mercury - Water Pump Base to Face Plate Gasket - 27-39625

$0.00 - $0.00
$0.00
$5.91
$5.91 - $5.91
$5.91
Only 5 left!

The Mercury Marine 27-39625 Water Pump Base to Face Plate Gasket is an OEM lower-unit cooling-system gasket used on compatible Mercury and Mariner ...

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$0.00 - $0.00
$0.00
$5.91
$5.91 - $5.91
$5.91

Sierra - Exhaust Elbow Gasket - 18-0305-1

$0.00 - $0.00
$0.00
$18.87
$18.87 - $18.87
$18.87
Only 5 left!

The Sierra Marine 18-0305-1 Exhaust Elbow Gasket is an aftermarket marine exhaust gasket used to seal the joint between the exhaust manifold and ex...

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$0.00 - $0.00
$0.00
$18.87
$18.87 - $18.87
$18.87

Mercury - Water Distributor Thermostat Housing Gasket - 27-475901

$0.00 - $0.00
$0.00
$4.99
$4.99 - $4.99
$4.99
Only 5 left!

The Mercury MerCruiser Quicksilver 27-475901 Gasket is an OEM cooling-system sealing gasket used on select Mercury MerCruiser sterndrive engines. I...

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$0.00 - $0.00
$0.00
$4.99
$4.99 - $4.99
$4.99

Yamaha - Drain Plug Gasket - 90430-08003-00

$0.00 - $0.00
$0.00
$2.27
$2.27 - $2.27
$2.27
in stock

The Yamaha Marine 90430-08003-00 Drain Plug Gasket is a genuine OEM sealing washer used on Yamaha outboard lower-unit gearcase drain and vent screw...

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$0.00 - $0.00
$0.00
$2.27
$2.27 - $2.27
$2.27

End Plate Gasket 5in x 3/8 Center - 501834RP

$0.00 - $0.00
$0.00
$12.08
$12.08 - $12.08
$12.08
in stock

The 501834RP End Plate Gasket is a marine heat exchanger and expansion tank sealing gasket for 5-inch end plate applications using a centered 3/8" ...

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$0.00 - $0.00
$0.00
$12.08
$12.08 - $12.08
$12.08

PCM - Cover Drain Exhaust Gasket - 96331

$0.00 - $0.00
$0.00
$4.45
$4.45 - $4.45
$4.45
in stock

The PCM 96331 Cover Drain Exhaust Gasket is a marine exhaust sealing gasket used on Pleasurecraft Marine / PCM engine applications where the exhaus...

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$0.00 - $0.00
$0.00
$4.45
$4.45 - $4.45
$4.45

Quicksilver — Intake Manifold & Valley Gasket Set 8.1L 496 MAG — 27-881633T01

$0.00 - $0.00
$0.00
$477.47
$477.47 - $477.47
$477.47
Only 1 left!

The Mercury MerCruiser Quicksilver 27-881633T01 Intake Manifold and Valley Gasket Set is a genuine OEM replacement gasket kit for GM-based 8.1L big...

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$0.00 - $0.00
$0.00
$477.47
$477.47 - $477.47
$477.47

Volvo Penta - Camshaft Sealing Ring - 863231

$0.00 - $0.00
$0.00
$33.00
$33.00 - $33.00
$33.00
Only 2 left!

The Volvo Penta 863231 is a genuine OEM camshaft sealing ring used at the camshaft outlet / cylinder head sealing location on select Volvo Penta en...

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$0.00 - $0.00
$0.00
$33.00
$33.00 - $33.00
$33.00

Volvo Penta - Camshaft Sealing Ring - 8631561

$0.00 - $0.00
$0.00
$35.90
$35.90 - $35.90
$35.90
Only 1 left!

The Volvo Penta 8631561 is an OEM camshaft sealing ring used at the camshaft outlet / cylinder head sealing area on select Volvo Penta engine appli...

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$0.00 - $0.00
$0.00
$35.90
$35.90 - $35.90
$35.90

Volvo Penta - O-Ring - 861830

$0.00 - $0.00
$0.00
$11.80
$11.80 - $11.80
$11.80
Only 3 left!

The Volvo Penta 861830 is a genuine OEM O-ring used in the lubricating oil system on select Volvo Penta marine diesel engines. This sealing ring...

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$0.00 - $0.00
$0.00
$11.80
$11.80 - $11.80
$11.80

Volvo Penta MS3 Reverse Gear Gasket 853939

$0.00 - $0.00
$0.00
$11.00
$11.00 - $11.00
$11.00
Only 2 left!

The Volvo Penta 853939 is a genuine OEM reverse gear / transmission housing gasket used on select Volvo Penta MS3-series marine gearboxes. This thi...

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$0.00 - $0.00
$0.00
$11.00
$11.00 - $11.00
$11.00

Volvo Penta - Lock Washer - 853869

$0.00 - $0.00
$0.00
$63.10
$63.10 - $63.10
$63.10
Only 1 left!

The Volvo Penta 853869 is a genuine OEM front propeller lock washer used on select Volvo Penta Duoprop sterndrives. This tab-style lock washer secu...

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$0.00 - $0.00
$0.00
$63.10
$63.10 - $63.10
$63.10

Volvo Penta - Sealing Ring - 853868

$0.00 - $0.00
$0.00
$47.30
$47.30 - $47.30
$47.30
Only 3 left!

The Volvo Penta 853868 is a genuine OEM double lip sealing ring used behind the shift mechanism on the gear selector housing of select Volvo Penta ...

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$0.00 - $0.00
$0.00
$47.30
$47.30 - $47.30
$47.30

Volvo Penta MS4B Transmission Sealing Ring - 853757

$0.00 - $0.00
$0.00
$105.00
$105.00 - $105.00
$105.00
Only 1 left!

The Volvo Penta 853757 Transmission Sealing Ring is a genuine OEM internal sealing component used in compatible Volvo Penta transmission and revers...

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$0.00 - $0.00
$0.00
$105.00
$105.00 - $105.00
$105.00

Volvo Penta Lower Gear Housing O-Ring SX-A DPS - 3889786

$0.00 - $0.00
$0.00
$7.30
$7.30 - $7.30
$7.30
Only 1 left!

The Volvo Penta 3889786 Lower Gear Housing O-Ring is a genuine OEM molded sealing ring used in compatible Volvo Penta sterndrive lower gear housing...

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$0.00 - $0.00
$0.00
$7.30
$7.30 - $7.30
$7.30

Volvo Penta Lower Gear Housing O-Ring - 3889784

$0.00 - $0.00
$0.00
$5.90
$5.90 - $5.90
$5.90
Only 1 left!

The Volvo Penta 3889784 Lower Gear Housing O-Ring is a genuine OEM molded sealing ring used in compatible Volvo Penta sterndrive gear housing assem...

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$0.00 - $0.00
$0.00
$5.90
$5.90 - $5.90
$5.90

Mercury Outboard Propeller Shaft Oil Seal - 8M0205729

$0.00 - $0.00
$0.00
$34.28
$34.28 - $34.28
$34.28
Only 2 left!

The Mercury MerCruiser Quicksilver 8M0205729 is a genuine Mercury Marine OEM propeller shaft oil seal used in select Mercury, Mariner, and MerCruis...

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$0.00 - $0.00
$0.00
$34.28
$34.28 - $34.28
$34.28

Volvo Penta Coolant Pump Gasket - 862596

$0.00 - $0.00
$0.00
$24.40
$24.40 - $24.40
$24.40
Only 1 left!

The Volvo Penta 862596 is a genuine Volvo Penta OEM coolant pump gasket used in select Volvo Penta marine engine cooling-system assemblies where th...

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$0.00 - $0.00
$0.00
$24.40
$24.40 - $24.40
$24.40

Yamaha F200-F350 V6 Outboard Oil Seal - 93104-22M07-00

$0.00 - $0.00
$0.00
$12.92
$12.92 - $12.92
$12.92
Only 2 left!

The Yamaha 93104-22M07-00 is a genuine Yamaha OEM oil seal used in select Yamaha outboard engine and lower-unit assemblies where the factory parts ...

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$0.00 - $0.00
$0.00
$12.92
$12.92 - $12.92
$12.92

Mercury Quicksilver 2-Stroke Outboard Oil Seal - 26-41953

$0.00 - $0.00
$0.00
$25.74
$25.74 - $25.74
$25.74
Only 1 left!

The Mercury Quicksilver 26-41953 is a genuine Mercury Marine OEM oil seal used on select Mercury and Mariner 2-stroke outboards, SportJet models, a...

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$0.00 - $0.00
$0.00
$25.74
$25.74 - $25.74
$25.74

Mercury MerCruiser 3.0L Fuel Pump Gasket - 27-8M0108647

$0.00 - $0.00
$0.00
$5.84
$5.84 - $5.84
$5.84
Only 1 left!

The Mercury MerCruiser Quicksilver 27-8M0108647 is a genuine Mercury Marine OEM fuel pump gasket used on select MerCruiser gasoline engines where t...

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$0.00 - $0.00
$0.00
$5.84
$5.84 - $5.84
$5.84

Mercury MerCruiser Exhaust Tube Seal - 37641001

$0.00 - $0.00
$0.00
$6.35
$6.35 - $6.35
$6.35
Only 1 left!

he Mercury MerCruiser Quicksilver 37641001 is a genuine Mercury Marine OEM exhaust tube seal used on select vintage Mercury outboard and MerCruiser...

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$0.00 - $0.00
$0.00
$6.35
$6.35 - $6.35
$6.35

Mercury MerCruiser Driveshaft Housing Water Seal - 36557

$0.00 - $0.00
$0.00
$6.74
$6.74 - $6.74
$6.74
Only 3 left!

The Mercury MerCruiser Quicksilver driveshaft housing water seal is a genuine Mercury Marine OEM sealing component used on select vintage Mercury o...

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$0.00 - $0.00
$0.00
$6.74
$6.74 - $6.74
$6.74

Mercury MerCruiser Alpha Bell Housing Rubber Gasket - 27-8M0204656

$0.00 - $0.00
$0.00
$6.82
$6.82 - $6.82
$6.82
Only 1 left!

The Mercury MerCruiser Quicksilver 27-8M0204656 is a genuine Mercury Marine OEM bell housing rubber gasket used on select MerCruiser sterndrive and...

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$0.00 - $0.00
$0.00
$6.82
$6.82 - $6.82
$6.82

Mercury MerCruiser 2BBL Carburetor Base Mounting Gasket - 27-8079821

$0.00 - $0.00
$0.00
$7.79
$7.79 - $7.79
$7.79
in stock

The Mercury MerCruiser Quicksilver 27-8079821 is a genuine Mercury Marine OEM carburetor base mounting gasket used on select MerCruiser carbureted ...

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$0.00 - $0.00
$0.00
$7.79
$7.79 - $7.79
$7.79

Mercury MerCruiser Bravo Bearing Carrier Oil Seal - 26-821092

$0.00 - $0.00
$0.00
$55.49
$55.49 - $55.49
$55.49
in stock

The Mercury MerCruiser Quicksilver 26-821092 is a genuine Mercury Marine OEM bearing carrier oil seal used in select MerCruiser Bravo sterndrive lo...

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$0.00 - $0.00
$0.00
$55.49
$55.49 - $55.49
$55.49

Mercury MerCruiser Bravo Three Bearing Carrier Oil Seal - 26-861694

$0.00 - $0.00
$0.00
$98.99
$98.99 - $98.99
$98.99
in stock

The Mercury MerCruiser Quicksilver 26-861694 is a genuine Mercury Marine OEM bearing carrier oil seal used in select MerCruiser Bravo Three, Bravo ...

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$0.00 - $0.00
$0.00
$98.99
$98.99 - $98.99
$98.99

Mercury MerCruiser Fuel Cooler Quad Ring Seal - 26-8M0214975

$0.00 - $0.00
$0.00
$3.21
$3.21 - $3.21
$3.21
in stock

The Mercury MerCruiser Quicksilver 26-8M0214975 is a genuine Mercury Marine OEM fuel cooler quad ring seal used in select Mercury and MerCruiser fu...

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$0.00 - $0.00
$0.00
$3.21
$3.21 - $3.21
$3.21

Volvo Penta Pivot Housing Mounting Gasket - 3889788

$0.00 - $0.00
$0.00
$8.70
$8.70 - $8.70
$8.70
in stock

The Volvo Penta 3889788 is a genuine Volvo Penta OEM pivot housing mounting gasket used on select Volvo Penta sterndrive transom and pivot housing ...

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$0.00 - $0.00
$0.00
$8.70
$8.70 - $8.70
$8.70

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...

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$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...

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$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...

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$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...

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$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...

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$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...

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$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...

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$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...

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$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...

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$14.39 - $14.39
$14.39
$14.39
$14.39 - $14.39
$14.39