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Marine Drive Unit Components
Showing In Stock Items. Show All 80 Items.
Sierra Marine Trim Senders
Getting the correct trim angle makes all the difference in how your boat glides across the water. That is why its important to make sure any components of the trim are in good working condition. These Sierra Marine trim senders are one of those components that should not be overlooked. Each sender is made to the exact specifications as the original and will wire-up right to your boat.
Not Yet Reviewed
$94.99
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$202.99
Sierra Marine Trim Cylinder Kits
Sierra Marine trim cylinder kits are designed for use in Mercruiser Alpha Gen II stern drives. These repair kits are for use with the front and rear trim cylinder. For more than 50 years, Sierra Marine has been unmatched in quality and backed by rigorous engineering, testing, and manufacturing standards to produce the best parts in the marine industry. Sierra Marine's commitment to excellence ensures the highest degree of confidence where it counts the most: out on the water. Order the kit for your application needs.
Not Yet Reviewed
$17.99
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$881.99
Sierra Marine Trim Pump Assemblies
Sierra Marine trim pumps are marine drive unit components engineered to surpass today's high horsepower engine demands and stand up to the harsh marine environment. Sierra products are made to meet or exceed the original equipment part it replaced. Sierra has been one of the most trusted names in the marine industry and has proudly been offering high-quality engine and drive parts to keep your boat on the water and running strong. Order the trim pump assembly recommended for your application needs.
Not Yet Reviewed
$607.99
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$1,012.99
Sierra Marine Pump Covers
Sierra Marine pump covers are designed to protect the pump from corrosion due to weather, thus extending its service life significantly. Additionally, these pump covers are useful to reduce the noise the pump creates and also increases the aesthetic appeal of the tank. These replacement covers are 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 cover designed for your application.
Not Yet Reviewed
$79.99
Sierra Marine Prop Shafts
Sierra Marine offers prop shafts developed for use with OMC and Johnson/Evinrude engines. They have a lot of great features, including exceptional performance quality, durability, and high reliability. Sierra's propeller shafts are made with the industry's best-grade materials and are finished with a minimal quality of leftover tensions, and they are corrosion-resistant. All Sierra products are equal to or better than the original equipment parts that they are meant to replace. For more than 50 years, Sierra has been unmatched in quality and backed by rigorous engineering, testing, and manufacturing standards to produce the best parts in the marine industry. Sierra Marine's commitment to excellence ensures the highest degree of confidence where it counts the most: out on the water. Order the prop shaft designed for your application needs.
Not Yet Reviewed
$95.99
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$399.99
Sierra Marine Gear Kits
Sierra Marine offers kits to help you rebuild your gear box. Each kit contains the gears you need to get your boat back on the water. Order the model recommended for your watercraft engine application.
Not Yet Reviewed
$2.99
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$649.99
Sierra Marine Transom Seal Kits
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
$28.99
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$200.99
Sierra Marine Oil Seals
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
$2.99
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$24.99
Sierra Marine Bearing Carriers
Sierra offers a comprehensive product line of marine engine and drive parts, including bearing carriers that are designed to support the drive shaft between the transmission and the differential. These outboard motor parts are available for Johnson, Evinrude, Mercury, Mariner and Mercruiser and other engine types. Each Sierra product meets or exceeds the original equipment part it replaces. Select the bearing carriers for your application.
Not Yet Reviewed
$85.99
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$148.99
Sierra Marine Drain Plugs
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
$6.99
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$349.99
Sierra Marine Shift Cable Bellows
When you only need the bellows and not a whole transom seal kit, Sierra Marine can help. They offer several different shift cable bellows to fit different applications. Made from durable materials, these accordion-shaped parts, when clamped in place, offer protection from water. Maintaining the bellows on your boat is important. Sierra Marine can help with their selection of replacements. Bellows may or may not include clamp(s).
Not Yet Reviewed
$3.99
Sierra Marine Propeller Nuts
Sierra Marine offers a wide range of watercraft replacement parts, including propeller nuts for virtually every motor from Chrysler, Force, US Marine, GLM, Mallory, Mercruiser, Mercury, Johnson/Evinrude, OMC, Yamaha, Nissan, Tohatsu, Suzuki, Volvo Penta, Pleasurecraft, Honda©, and Sears. These brass, steel, or nylon nuts are available in hex, barrel, and castle style in numerous thread sizes. They've available individually, in a set or kit to secure your prop.
Not Yet Reviewed
$2.99
Sierra Marine Spanner Nuts
Sierra Marine spanner nuts are suitable to fit IA/IB/IC and EZ Shift, MC-I, R, MR, Alpha One, Gen II, Vazer, TRS, Bravo I and IX applications. The spanner nuts are high-strength, with an entire body casting made of high-quality medium carbon steel. For 50 years Sierra, one of the most trusted names in the marine industry, has proudly been offering high-quality engine and drive parts to help keep your boat on the water and running strong.
Not Yet Reviewed
$23.99
Sierra Marine Rope Seal Gaskets
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
$14.99
Clearance
Sierra Marine Drive Unit O-Rings
Maintain your boat's drive system with components from Sierra Marine. They carry the items you need, even the smaller stuff like O-rings made from quality materials. Little things can cause big problems. Service your drive system with Sierra O-rings for a good seal.
Not Yet Reviewed
$5.99
$1.99
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$2.50
Clearance
Sierra Marine U-Joint Assemblies
Sierra Marine offers a wide range of watercraft drive unit replacement parts, including U-joint assemblies for various GLM, Mallory, OMC, Volvo Penta, and Mercruiser stern drive applications. Each component is manufactured with factory materials in accordance with OE specifications to ensure proper fitment and long-lasting performance.
Not Yet Reviewed
$439.99
$308.50
Clearance
Sierra Marine Clutch Dogs
Sierra Marine clutch dogs are no-slip, no-friction clutches to replace your outboard's originals. Worn or chipped teeth can cause shifting and gear problems. If you need to replace the dog clutch, Sierra offers several choices for different engines, and all are quality products that meet or exceed OE.
Not Yet Reviewed
$122.99
$56.99
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$86.50
Sierra Marine Bushings
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
$17.99
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$70.99
Sierra Marine Prop Nut Spacers
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
$4.99
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$37.99
Sierra Marine Plug-Off Caps
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 )
$7.99
Sierra Marine Intake Manifold Spacers
Sierra Marine intake manifold spacers are a perfect replacement designed to help you maintain your high-performing Marine engine. Made from quality material, these spacers meet or exceed OEM specifications in quality and performance of the original part it replaces. Order the application you need.
( 1 )
$10.99
Sierra Marine Bolts and Screws
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
$1.99
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$12.99
Sierra Marine Lower Unit Seal Kits
Sierra Marine lower unit seal kits consist of the necessary parts needed to help complete repairs. Each component in the kit is engineered to meet or exceed manufacturer's specifications to ensure the proper fit and function—plus, these pre-assembled lower unit seal kits are a real time saver! For OEM performance at a value price, look no further than to Sierra Marine.
( 1 )
$6.99
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$132.99
Sierra Marine Pinion Bearings
Sierra is a leading supplier of marine engine and drive parts, offering 1,000's of parts including pinion bearings 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. Choose the Sierra Marine pinion bearings designed to fit your application needs.
Not Yet Reviewed
$30.99
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$38.99
