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"Sierra" > Boating > Maintenance >

Boat cleaners, wax, marine paint, oil, lubricants, filters, and boat repair manuals Gander Mountain has everything it takes to maintain your boat. Whether you are winterizing your boat or getting it ready for boating season, we have it all. Our top brands include Awlgrip, Quicksilver, Star Brite, Seloc and more. Do your boat maintenance shopping here!

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Sierra Grease Gun, Sierra Part #18-9783

New! Sierra Grease Gun, Sierra Part #18-9783

Key Features
  • Sierra Part #18-9783

  • Grease gun

  • 3-oz. tube of grease

$29.99
Sierra Marine Oil Filters

Sierra Marine Oil Filters

Key Features
  • Engineeered with premium grade materials

  • Heavy-wall steel canister is corrosion resistant

  • Epoxy coating offers further corrosion resistance

  • High-efficiency filter media

  • Click on item # for complete list of applications

12 models to choose from
$5.99 - $10.99
Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9400-4P

Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9400-4P

Key Features
  • Sierra Part #18-9400-4P

  • 25W-40 oil

  • For Mercruiser engine

$3,622.99
Sierra Fogging Oil, Sierra Part #18-9550-3

Sierra Fogging Oil, Sierra Part #18-9550-3

Key Features
  • Sierra Part #18-9550-3

  • Fogging oil

  • Gallon

$31.99
Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9440-4P

Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9440...

Key Features
  • Sierra Part #18-9440-4P

  • 25W-40 oil

  • For Mercury Marine engine

$3,501.99
Sierra Grease Gun, 14-oz.

Sierra Grease Gun, 14-oz.

Key Features
  • Heavy-duty, all-steel construction

  • Dependable, long service life

  • 14-oz. capacity

$23.99
Sierra Fuel/Water Separator For Volvo/OMC Engine, Sierra Part #18-7989

Sierra Fuel/Water Separator For Volvo/OMC Engine, Sierra Part #18...

Key Features
  • Sierra Part #18-7989

  • Fuel/water separator

  • For Volvo/OMC engine

$5.49
Sierra Type C Gear Lube, Sierra Part #18-9620-0

Sierra Type C Gear Lube, Sierra Part #18-9620-0

Key Features
  • Sierra Part #18-9620-0

  • Type C gear lube

$7.99
Sierra Tank Connector For Suzuki Engine, Sierra Part #18-8071

Sierra Tank Connector For Suzuki Engine, Sierra Part #18-8071

Key Features
  • Sierra Part #18-8071

  • Tank connector

  • For Suzuki engine

$5.39
Sierra TC-W3 Premium 2-Cycle Oil, Sierra Part #18-9500-3P

Sierra TC-W3 Premium 2-Cycle Oil, Sierra Part #18-9500-3P

Key Features
  • Sierra Part #18-9500-3P

  • TC-W3 premium 2-cycle oil

$5,459.99
Sierra 15W-40 Diesel Engine Oil For Volvo Engine, Sierra Part #18-9553-5

Sierra 15W-40 Diesel Engine Oil For Volvo Engine, Sierra Part #18...

Key Features
  • Sierra Part #18-9553-5

  • Diesel engine oil

  • For Volvo engine

$99.99
Sierra Grease Gun, Sierra Part #18-9804

Sierra Grease Gun, Sierra Part #18-9804

Key Features
  • Sierra Part #18-9804

  • Grease gun

$12.99
Sierra Magnetic Drain Screw For OMC Engine, Sierra Part #18-2378

Sierra Magnetic Drain Screw For OMC Engine, Sierra Part #18-2378

Key Features
  • Sierra Part #18-2378

  • Magnetic drain screw

  • For OMC engine

$10.99
Sierra Hose Barb For Mercury Marine/OMC/Yamaha Engine, Sierra Part #18-8055

Sierra Hose Barb For Mercury Marine/OMC/Yamaha Engine, Sierra ...

Key Features
  • Sierra Part #18-8055

  • Hose barb

  • For Mercury Marine/OMC/Yamaha engine

$3.99
Sierra Fuel Connector For OMC Engine, Sierra Part #18-8056

Sierra Fuel Connector For OMC Engine, Sierra Part #18-8056

Key Features
  • Sierra Part #18-8056

  • Fuel connector

  • For OMC engine

$4.99
Sierra Tank Connector For OMC Engine, Sierra Part #18-8063

Sierra Tank Connector For OMC Engine, Sierra Part #18-8063

Key Features
  • Sierra Part #18-8063

  • Tank connector

  • For OMC engine

$8.49
Sierra Fuel Connector For Yamaha Engine, Sierra Part #18-8085

Sierra Fuel Connector For Yamaha Engine, Sierra Part #18-8085

Key Features
  • Sierra Part #18-8085

  • Fuel connector

  • For Yamaha engine

$7.99
Sierra Hose Barb For OMC Engine, Sierra Part #18-8074

Sierra Hose Barb For OMC Engine, Sierra Part #18-8074

Key Features
  • Sierra Part #18-8074

  • Hose barb

  • For OMC engine

$3.89
Sierra SAE 30 Synthetic Oil For Volvo Engine, Sierra Part #18-9410-7

Sierra SAE 30 Synthetic Oil For Volvo Engine, Sierra Part #18-...

Key Features
  • Sierra Part #18-9410-7

  • SAE 30 oil

  • For Volvo engine

$1,247.99
Sierra TC-W3 Synthetic Oil For OMC Engine, Sierra Part #18-9540-7

Sierra TC-W3 Synthetic Oil For OMC Engine, Sierra Part #18-9540-7...

Key Features
  • Sierra Part #18-9540-7

  • TC-W3 synthetic oil

  • For OMC engine

$1,699.99
Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9400-7P

Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9400-7P

Key Features
  • Sierra Part #18-9400-7P

  • 25W-40 oil

  • For Mercruiser engine

$3,358.99
Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9440-7P

Sierra 25W-40 Oil For Mercruiser Engine, Sierra Part #18-9440-7P

Key Features
  • Sierra Part #18-9440-7P

  • 25W-40 oil

  • For Mercruiser engine

$3,921.99
Sierra 80W-90 Premium Gear Lube, Sierra Part #18-9600-7P

Sierra 80W-90 Premium Gear Lube, Sierra Part #18-9600-7P

Key Features
  • Sierra Part #18-9600-7P

  • 80W-90 premium gear lube

$4,181.99
Sierra 80W-90 Premium Gear Lube, Sierra Part #18-9600-7

Sierra 80W-90 Premium Gear Lube, Sierra Part #18-9600-7

Key Features
  • Sierra Part #18-9600-7

  • 80W-90 premium gear lube

$1,081.99
Sierra Direct Injecton TC-W3 Engine Oil, Sierra Part #18-9530-7P

Sierra Direct Injecton TC-W3 Engine Oil, Sierra Part #18-9530-7P

Key Features
  • Sierra Part #18-9530-7P

  • TC-W3 engine oil

  • 55 gallons

$5,252.99
Sierra TC-W3 2-Cycle Engine Oil, Sierra Part #18-9500-2

Sierra TC-W3 2-Cycle Engine Oil, Sierra Part #18-9500-2

Key Features
  • Sierra Part #18-9500-2

  • TC-W3 2-cycle engine oil

  • Quart

$9.69
Sierra 25W-50 FC-W Engine Oil, Sierra Part #18-9552-6

Sierra 25W-50 FC-W Engine Oil, Sierra Part #18-9552-6

Key Features
  • Sierra Part #18-9552-6

  • 25W-50 FC-W engine oil

  • 16 gallons

$459.99
Sierra Synthetic TC-W3 Oil For OMC Engine, Sierra Part #18-9540-3

Sierra Synthetic TC-W3 Oil For OMC Engine, Sierra Part #18-9540-3...

Key Features
  • Sierra Part #18-9540-3

  • Synthetic TC-W3 oil

  • For OMC engine

$39.99
Sierra Synthetic TC-W3 Oil, Sierra Part #18-9496

Sierra Synthetic TC-W3 Oil, Sierra Part #18-9496

Key Features
  • Sierra Part #18-9496

  • Synthetic TC-W3 oil

$394.99
Sierra 15W-40 Diesel Engine Oil For Mercury Marine/Volvo, Sierra Part #18-9553-3

Sierra 15W-40 Diesel Engine Oil For Mercury Marine/Volvo, Sierra ...

Key Features
  • Sierra Part #18-9553-3

  • 15W-40 diesel engine oil

  • For Mercury Marine/Volvo engine

$18.99
Sierra 10W-40 Semi-Synthetic Oil, Sierra Part #18-9551-6

Sierra 10W-40 Semi-Synthetic Oil, Sierra Part #18-9551-6

Key Features
  • Sierra Part #18-9551-6

  • Semi-synthetic oil

  • 16 gallons

$314.99

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