Availability
Sierra Marine drive unit caps are made to outperform the original equipment part(s) they are replace. Each Sierra product is engineered to withstand the harsh marine environment while meeting today's high horsepower engine specifications. Order the drive unit component designed for your application.
Not Yet Reviewed
$11.99
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$14.99
Sierra Marine makes measuring the clearance on your drive units a piece of cake when using their shimming tools. They are made for all different setups and come specific to your needs. Get back on the water with a properly installed gear thanks to Sierra drive shimming tools.
Not Yet Reviewed
$14.99
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$20.99
Sierra pinion nuts are constructed with premium, long-lasting, non-corrosive material that can resist the harsh sea climate. These pinion nuts are designed to connect to the steering shaft so that the gear will spin and move the rack when you turn the steering wheel. Each Sierra product is made to meet or exceed the original equipment part it replaces. Keep your boat on the water and running strong with Sierra marine drive unit components.
Not Yet Reviewed
$20.99
Sierra Marine's coupler water tubes are made from a blend of high-tech materials, and skillfully designed to work with Alpha One Gen II drives, and work with many outboard applications. Each Sierra product meets or exceeds the original equipment part it replaces and is engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. Order the model designed for your application needs.
Not Yet Reviewed
$12.99
Sierra Marine supplies a wide range of OEM-equivalent parts to maintain and/or repair your watercraft, including rope seal gaskets. These gaskets meet or exceed the original equipment part they replace and are engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. For over 50 years, Sierra has supplied the best aftermarket parts in the marine industry—so boaters can enjoy the best of times on the water. Upgrade your boat with Sierra Marine rope seal gaskets.
Not Yet Reviewed
$17.99
Sierra Marine is a leading supplier of marine engine and drive parts, offering 1,000's of parts including shift rod assemblies. These quality components are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Order the shift rod assembly for your application.
Not Yet Reviewed
$15.99
Sierra Marine is a leading supplier of marine engine and drive parts, offering 1,000's of parts including tilt/trim pivot pins. These quality components are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Order the pivot pins for your application needs.
Not Yet Reviewed
$21.99
Sierra Marine outdrive gasket sets are high-quality seals designed to meet or exceed OEM requirements. Each replacement set contains the gaskets you need to get your outboard installed and keep it leak-free. Order the set recommended for your marine application.
( 1 )
$10.99
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$12.99
Sierra is a leading supplier of marine engine and drive parts, offering 1,000's of parts including driveshafts. These quality components are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra Marine products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Choose the driveshaft designed for your application needs.
Not Yet Reviewed
$20.99
Sierra Marine oil seals are available to fit most applications on the water today. Their varying selection offers the best quality materials, along with the proper fit and function to equal or go beyond the OE oil seals they are replacing. For confident, leak-free performance choose Sierra Marine for your oil seals.
Not Yet Reviewed
$15.99
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$18.99
Sierra is a leading supplier of marine engine and drive parts, offering 1,000's of parts including bushings that are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra Marine products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Order the Sierra Marine bushings that are designed for your application needs.
Not Yet Reviewed
$15.99
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$20.99
Sierra Marine offers many hardware pieces to keep your boat's drive system in working order. Their selection of lock nuts is precision manufactured from quality materials to thread on easily and to stay put securely holding your marine components together.
Not Yet Reviewed
$10.99
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$14.99
Sierra Marine drain taps are designed and manufactured for low-pressure applications. Made to the highest quality standards, they provide a leak-proof, metal-to-metal seal with hand tightening.
( 2 )
$16.99
Sierra Marine prop nut spacers align and secure the prop to the shaft and aids in reverse thrust. Cogged or pinned to work with a tab washer to keep the nut from coming free, these spacers help hold the propeller better, and can bear reverse thrust loads and prevents the inner hub from sliding aft. For 50 years Sierra, one of the most trusted names in the marine industry, has proudly been offering high-quality engine and drive parts. Their products meet or exceed the original equipment part it replaces and are engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. Order the spacers designed for your application.
Not Yet Reviewed
$12.99
Sierra is a leading supplier of marine engine and drive parts, offering 1,000's of parts including bolts and screws that are designed to meet or exceed the OE part(s) they replace. For 50 years, Sierra Marine has proudly offered high-quality engine and drive parts as a trusted name in the marine industry. All Sierra Marine products are engineered to meet today's high horsepower engine demands, while withstanding the harsh marine environment. Order the bolt and screw hardware recommended to fit your application needs.
Not Yet Reviewed
$10.99
Sierra Marine plug-off caps are made from durable, high-quality rubber. They're perfect for blocking off vacuum lines or hoses to perform engine diagnostic tests. The caps are available in different sizes so you can use them for a variety of applications in your engine bay.
( 1 )
$16.99
Sierra Marine retaining rings are high-quality replacement components made to meet or exceed the original equipment part it replaces. Sierra, one of the most trusted names in the marine industry, has proudly been offering high-quality engine and drive parts for decades. Their parts are engineered to meet today's high horsepower engine demands while withstanding the harsh marine environment. Order the retaining rings for your application.
Not Yet Reviewed
$16.99
Sierra Marine water pump gaskets are available in many designs and material options to create a confident seal when servicing and remounting your water pump. The gaskets are manufactured to meet OEM specifications, offering a perfect fit with leak-free performance.
Not Yet Reviewed
$11.99
Sierra Marine drain plugs are available in magnetic and non-magnetic styles. They provide a direct-fit for missing OE plugs and will keep fluids in and contaminants out. For everything marine, big and small components, Sierra Marine will help you repair and maintain your boat.
Not Yet Reviewed
$19.99
Sierra Marine Premium lower unit gear lube oil is formulated for marine drive systems. This marine gear lube reduces friction and protects gears, bearings, and other gear case components. Sierra Marine Premium lower unit gear lube oil is available for purchase in many different quantities. Features include: * Recommended for all general marine applications requiring a GL-5 class lubricant * Ideal for replacing all old hypoid 90 application needs * Formulated for use in freshwater or saltwater conditions and all standard marine applications
Not Yet Reviewed
$13.99
Clearance
To service your boat engine yourself you will need some special tools. Sierra Marine lower unit fill tubes and kits can help. These flush and fill tools (standard or import) are for small gearcases requiring a 10 oz. tube of gear lube and include the appropriate lower unit fitting for specific applications. Sierra also offers the standard fill tube in a kit along with two 10 oz. tubes of gear lubricant. Choose the product(s) you need for your boat maintenance. Features of lubricant: * Recommended for all general marine applications requiring a GL-5 class lubricant * Ideal for replacing all old hypoid 90 application needs * Formulated for use in freshwater or saltwater conditions and all standard marine applications * Reduces friction and protects gears, bearings, and other gear case components * Amber color * 80W-90 weight
Not Yet Reviewed
$41.99
$12.50
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$20.99
Sierra Marine high performance synthetic blend lower unit gear lube oil is specifically formulated for high performance, large horsepower marine drive systems. This marine formulation reduces operating friction for increased performance, while protecting gears, bearings, and other gear case components. For use in both outboard and I/O lower units, Sierra Marine synthetic blend lower unit gear lube is designed to surpass the performance of the OE high performance gear lubricants.
( 2 )
$20.99
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
$10.99
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$21.99
Sierra Marine temperature senders are top-quality, direct-fit replacements, which are designed to eliminate connection and failure points. With a one-piece, lead-frame design from the sensing tip to the connector terminals, these units equip your boat with a proven design that's built to last. Don't chance overheating your engine with an old temperature sensor, get a brand new Sierra Marine temperature sender today.
Not Yet Reviewed
$20.99
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