Availability
Sierra Marine head gaskets will meet your marine engine's original equipment requirements for leak-free performance. They offer a huge assortment of high-quality gaskets to service many applications. Sierra Marine head gaskets will keep your boat's engine in prime condition for the best on-the-water experience.
( 3 )
$7.99
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$295.99
Sierra Marine intake manifold gaskets are perfect replacements designed to help you maintain your high-performing marine engine. Made from quality material, these gaskets meet or exceed OEM specifications in quality and performance of the original part they are replacing. Order the application you need.
Not Yet Reviewed
$3.99
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$97.99
Nothing ruins a day on the water like motor trouble. Stay ahead of the problem with Sierra Marine engine overhaul gasket sets. They allow you to replace your old seals—restoring lost performance and keeping your marine vehicle running efficiently. Get back to enjoying the open water by ordering the Sierra Marine overhaul gasket set designed for your application.
( 2 )
$125.99
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$153.99
Sierra Marine thermostat gaskets are high-quality replacements made specific to marine engines. Each gasket application is constructed from premium materials, and made to exact specifications to ensure a proper fit for your marine engine model. Keep your watercraft a float with high-quality aftermarket replacement boat engine and drive parts from Sierra Marine.
Not Yet Reviewed
$1.50
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$7.99
Sierra Marine offers complete head gasket sets for a wide range of engine applications. These replacement seals are made from original materials and specs to ensure proper fit and performance. They facilitate your overhaul or rebuild with model-specific gaskets for the head, intake, exhaust manifold, water neck, distributor, and much more—depending on the set you select. Order the kit recommended for your engine.
Not Yet Reviewed
$223.99
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$318.99
Sierra Marine transom seal kits provide components to remove and reinstall your boat's sterndrive. Their kit offerings are available for many applications with parts that will fit and function as the originals they are replacing. Service the rear of your boat with the leak-free sealing of Sierra transom kits.
Not Yet Reviewed
$2.99
Sierra Marine offers a wide range of watercraft replacement parts—including these heat exchanger end gaskets. The composite seals are made from original materials and specs to ensure a correct fit and performance. They're available for different marine makes, such as Mercruiser and GLM. Heat exchangers are a key part of your engine's cooling system. Maintain your vessel with the gasket recommended for your application.
Not Yet Reviewed
$3.99
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$8.99
Sierra Marine offers timing cover seals for a variety of watercraft makes—including Mercury, OMC, Mallory, Volvo Penta, Mercruiser, and Evinrude/Johnson. These replacement parts meet or exceed the original equipment. Order the model recommended for your vessel.
Not Yet Reviewed
$23.99
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$28.99
Sierra Marine offers rear main seals for a wide range of watercraft makes—including Crusader, Mercruiser, OMC, Pleasurecraft, Volvo Penta, Mallory, and GLM. The one- or 2-piece rubber O-ring seals are designed for the crankshaft of various marine engine models. Order the replacement rear main seal recommended for your vessel.
Not Yet Reviewed
$24.99
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$75.99
A leak-free seal is important. Sierra Marine valve cover gaskets are available in many designs and material options to create a confident seal between your watercraft's valve covers and exhaust manifold. The gaskets are designed to meet OEM specifications to offer a perfect fit.
Not Yet Reviewed
$3.99
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$34.99
Gaskets are important, especially on your boat. These small parts have a big job, and Sierra Marine offers several options to keep your boat on the water and all its parts running their best. Their exhaust manifold end cap gaskets are made from durable materials to create a tight seal, preventing leaks and protecting against moisture. Select the gaskets designed for your boat's exhaust system.
Not Yet Reviewed
$1.99
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$21.99
If you have recently noticed increased noise levels and water leakage around your marine vehicle's exhaust, it might be time for Sierra Marine exhaust baffle plate gaskets. They are designed to help the baffle system reduce noise, water back-flow, and following sea waves from gaining easy access to the rest of the system. Whether you are doing repair work, full replacements, or a new build, get the products that keep you moving when you order the Sierra Marine exhaust baffle plate gaskets best suited for your application.
Not Yet Reviewed
$2.99
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$14.99
If you have recently noticed increased noise levels and airflow disturbances with your outboard engine, it might be time for Sierra Marine air silencer gaskets. They are designed to help the silencer work with the airbox to reduce noise and airflow disruptions caused by the rapid exhaust of compressed air. Whether you are doing repair work, full replacements, or a new build, get the products that keep you moving when you order the Sierra Marine air silencer gaskets best suited for your application.
Not Yet Reviewed
$4.99
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$8.99
Sierra Marine offers a wide range of watercraft replacement parts—including these carburetor base plate gaskets. They're available for applications such as Honda® outboards. The seals are made from quality materials and original specs for correct fit and performance. Order the gasket recommended for your carb base plate.
Not Yet Reviewed
$1.99
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$10.99
Sierra Marine distributor cap gaskets are quality composite replacements available in options to help you to maintain, tune-up, or overhaul your inboard or outboard engine. All gaskets are designed to meet OEM specifications for your application. Order the gasket recommended for your watercraft application.
Not Yet Reviewed
$1.99
Sierra Marine offers a wide range of watercraft replacement parts, including bypass cover gaskets designed and engineered to meet or exceed the high horsepower demands of today's engines in the harshest marine environments. The gaskets are made from high-quality materials, and each gasket is machined to match OEM hole and port patterns to meet or exceed manufacturer specifications to create a tight seal, preventing leaks and protecting against moisture. For over 50 years, Sierra Marine has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Select the gaskets for your application needs.
Not Yet Reviewed
$1.99
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$9.99
Sierra Marine offers a wide range of watercraft replacement parts—including these baffle plate gaskets. The OEM seals are made from original materials and specs to ensure proper fit and performance. They meet or exceed factory quality. Direct your vessel's oil flow; order the gasket model recommended for your application.
Not Yet Reviewed
$8.99
Gaskets are important, especially on your boat. These small parts have a big job, and Sierra Marine offers several options to keep your boat on the water and all its parts running their best. Their water jacket cover gaskets are made from durable materials to create a tight seal, preventing leaks and protecting against moisture. Select the gaskets designed for your boat's engine.
Not Yet Reviewed
$24.99
Sierra Marine offers a wide range of watercraft replacement parts—including these powerhead base gaskets. The composite seals are designed to fit specific applications from Johnson, Evinrude, GLM, Mallory, and more. Each gasket meets or exceeds the quality of the original equipment part to ensure correct fit and performance.
Not Yet Reviewed
$2.99
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$21.99
Sierra Marine offers a wide range of watercraft replacement parts, including transfer port gaskets designed and engineered to meet or exceed the high horsepower demands of today's engines in the harshest marine environments. The gaskets are made from high-quality materials, and each gasket is machined to match OEM hole and port patterns to meet or exceed manufacturer specifications to create a tight seal, preventing leaks and protecting against moisture. For over 50 years, Sierra Marine has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Select the gaskets for your application needs.
Not Yet Reviewed
$1.99
Sierra Marine offers water pump impeller gaskets for a wide range of watercraft applications, including motors from GLM, Johnson/Evinrude, Mallory, OMC, Chrysler, Mercury, Sears, Mercruiser, and Honda©. These housing seals are manufactured from factory materials and specs to ensure proper fitment and long-lasting performance.
Not Yet Reviewed
$4.99
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$18.99
Sierra Marine supplies a wide range of OEM-equivalent parts to maintain and/or repair your watercraft, including bearing housing gaskets. Foreign matter or leakage will cause bearing damage due to malfunction or seizure if the sealing device fails to perform correctly. These bearing housing gaskets provide a good seal against leaks to keep peak combustion pressures and temperatures in check and can help extend the life and dependability of rotating machinery by ensuring that the lubricating fluid is clean. Upgrade your watercraft with high-quality parts and accessories from Sierra Marine.
Not Yet Reviewed
$6.99
Gaskets are important, especially on your boat. These small parts have a big job, and Sierra Marine offers several options to keep your boat on the water and all its parts running their best. Their throttle body gaskets are made from durable materials to create a tight seal, preventing leaks and protecting against moisture. Select the gaskets designed for your boat's engine.
Not Yet Reviewed
$4.99
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$5.99
Sierra Marine offers thermostat caps—a critical component in the marine engine cooling system, ensuring the engine operates within its ideal temperature range for maximum performance and longevity. These thermostat retainer gaskets meet or exceed the original equipment part that they replace and are engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. For over 50 years, Sierra Marine has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Select the thermostat retainer gasket cap designed for your boat's outboard engine.
Not Yet Reviewed
$2.99
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