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Sierra > Boating & Marine > Maintenance >

Sierra boat maintenance 

  Buy now from the Sierra Maintenance available at Overton's. Do your own fiberglass and gelcoat repair with epoxy resins, filler, sealants, and fiberglass repair kits from West Systems, 3M, and Hi-Bond. We offer antifouling paints, bottom coats, and topside paints from Interlux, Petit, and Awlgrip. Keep your finish looking new with cleaners, wax, and brushes from 3M, Star brite, Sudbury, and Swobbit.

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Sierra Full Synthetic Engine Oil For Volvo Engine, Sierra Part #18-9410-4

Sierra Full Synthetic Engine Oil For Volvo Engine, Sierra Part #...

Key Features
  • Sierra Part #18-9410-4

  • Full synthetic engine oil SAE 30

  • 5 quarts

  • For Volvo engine

$39.99
$34.99
Sierra SAE 25W-40 Synthetic Blend Oil For Inboard and Sterndrive Engines, 5 qts.

Sierra SAE 25W-40 Synthetic Blend Oil For Inboard and Sterndrive ...

Key Features
  • Sierra Part #18-9440-4

  • Synthetic blend oil

  • Formulated for Inboards and Sterndrives

  • 5 Quarts / 4.73 Liters

$34.99
$28.99
Sierra High Performance Gear Lube, Sierra Part #18-9650-2

Sierra High Performance Gear Lube, Sierra Part #18-9650-2

Key Features
  • Sierra Part #18-9650-2

  • High performance gear lube

  • Quart

$13.99
$11.99
Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400-4

Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400...

Key Features
  • Sierra Part #18-9400-4

  • 25W-40 oil

  • For Mercury Marine engine

$34.99
$27.99
Sierra 10W-30 Oil For Mercury Marine Engine, Sierra Part #18-9420-3

Sierra 10W-30 Oil For Mercury Marine Engine, Sierra Part #18-9420...

Key Features
  • Sierra Part #18-9420-3

  • 10W-30 oil

  • For Mercury Marine engine

$26.99
$21.99
Sierra 10W-40 Oil For Suzuki Engine, Sierra Part #18-9551-3

Sierra 10W-40 Oil For Suzuki Engine, Sierra Part #18-9551-3

Key Features
  • Sierra Part #18-9551-3

  • 10W-40 oil

  • For Suzuki engine

$24.99
$19.99
Sierra Inboard Flusher, Sierra Part #18-9009

Sierra Inboard Flusher, Sierra Part #18-9009

Key Features
  • Sierra Part #18-9009

  • Inboard flusher

  • Fits most engines

$29.99
Sierra 10W-30 Synthetic Engine Oil, Sierra Part #18-9690-2

Sierra 10W-30 Synthetic Engine Oil, Sierra Part #18-9690-2

Key Features
  • Sierra Part #18-9690-2

  • 10W-30 synthetic engine oil

  • For 4-stroke outboards

$12.99
$11.99
Sierra Synthetic Gear Lube, 75W-90, Quart, Sierra Part #18-9680-2

Sierra Synthetic Gear Lube, 75W-90, Quart, Sierra Part #18-9680-2...

Key Features
  • Sierra Part No. 18-9680-2

  • Reduces friction

  • Provides superior wear protection

  • 75W-90

  • Replaces Volvo No. 1141679

$16.99
$14.99
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

13 models to choose from
$3.94 - $15.99
Sierra 10W-40 Semi-Synthetic Oil For Suzuki Engine, Sierra Part #18-9551-2

Sierra 10W-40 Semi-Synthetic Oil For Suzuki Engine, Sierra Part #...

Key Features
  • Sierra Part #18-9551-2

  • 10W-40 semi-synthetic oil

  • For Suzuki engine

$6.99
$6.74
Sierra Fogging Oil Additive, Sierra Part #18-9550-0

Sierra Fogging Oil Additive, Sierra Part #18-9550-0

Key Features
  • Sierra Part #18-9550-0

  • Fogging oil additive

  • 12 oz.

$8.99
$7.99
Sierra SAE 30 Full Synthetic Oil For Volvo Engine, Sierra Part #18-9410-2

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

Key Features
  • Sierra Part #18-9410-2

  • SAE 30 full synthetic oil

  • For Volvo engine

$8.99
Sierra Oil Filter For Westerbeke/Yanmar Engine, Sierra Part #18-7910-1

Sierra Oil Filter For Westerbeke/Yanmar Engine, Sierra Part #18-...

Key Features
  • Oil filter

  • For Westerbeke/Yanmar engine

  • Sierra Part #18-7910-1

$9.99
Sierra Seloc Manual, Sierra Part #18-01000

Sierra Seloc Manual, Sierra Part #18-01000

Key Features
  • Sierra Part #18-01000

  • Seloc manual

$42.99
$31.94
Sierra Seloc Manual, Sierra Part #18-03400

Sierra Seloc Manual, Sierra Part #18-03400

Key Features
  • Sierra Part #18-03400

  • Seloc manual

$42.99
$31.94
Sierra Seloc Manual, Sierra Part #18-01200

Sierra Seloc Manual, Sierra Part #18-01200

Key Features
  • Sierra Part #18-01200

  • Seloc manual

$36.99
$29.94
Sierra Synthetic 25W-50 FC-W Oil, Sierra Part #18-9552-8

Sierra Synthetic 25W-50 FC-W Oil, Sierra Part #18-9552-8

Key Features
  • Sierra Part #18-9552-8

  • Synthetic 25W-50 oil

  • Liter

$10.99
$8.99
Sierra Threadlocker 222 Sealant, Sierra Part #38653

Sierra Threadlocker 222 Sealant, Sierra Part #38653

Key Features
  • Sierra Part #38653

  • Threadlocker 222 sealant

$12.99
$9.99
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

$48.99
$39.99
Sierra Synthetic 10W-30 Oil, Sierra Part #18-9690-3

Sierra Synthetic 10W-30 Oil, Sierra Part #18-9690-3

Key Features
  • Sierra Part #18-9690-3

  • Synthetic 10W-30 oil

  • 4-stroke outboard applications

$37.99
$31.99
Sierra SAE 25W-40 Synthetic Blend Marine Engine Oil, 4L, Sierra Part #18-9440-3

Sierra SAE 25W-40 Synthetic Blend Marine Engine Oil, 4L, Sierra ...

Key Features
  • Sierra Part #18-9440-3

  • 25W-40 synthetic blend oil

  • 4-cycle oil

  • Replaces Mercury, Yamaha

  • 4 liters

$34.99
$27.99
Sierra 10W-30 Oil For Mercury Marine Engine, Sierra Part #18-9420-2

Sierra 10W-30 Oil For Mercury Marine Engine, Sierra Part #18-9420...

Key Features
  • Sierra Part #18-9420-2

  • 10W-30 oil

  • For Mercury Marine engine

$7.99
$7.34
Sierra Type C Gear Lube, Sierra Part #18-9620-2

Sierra Type C Gear Lube, Sierra Part #18-9620-2

Key Features
  • Sierra Part #18-9620-2

  • Type C gear lube

$8.99
$8.64
Sierra Oil Filter Wrench, Sierra Part #18-9790

Sierra Oil Filter Wrench, Sierra Part #18-9790

Key Features
  • Sierra Part #18-9790

  • Oil filter wrench

$14.99
$12.99
Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7921

Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7921...

Key Features
  • Sierra Part #18-7921

  • Oil filter

  • For Mercury Marine engine

$8.99
$7.84
Sierra Premium 2-Cycle Oil, Sierra Part #18-9500-3

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

Key Features
  • Sierra Part #18-9500-3

  • Premium 2-cycle oil

  • 1 gallon

$34.99
$28.99
Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7758

Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7758...

Key Features
  • Sierra Part #18-7758

  • Oil filter

  • For Mercury Marine engine

$8.44
Sierra SAE 25W-40 Synthetic Oil For Mercury Marine Engine,Sierra Part #18-9440-2

Sierra SAE 25W-40 Synthetic Oil For Mercury Marine Engine,Sierra ...

Key Features
  • Sierra Part #18-9440-2

  • Synthetic oil

  • For Mercury Marine engine

$7.84
Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7879-1

Sierra Oil Filter For Mercury Marine Engine, Sierra Part #18-7879...

Key Features
  • Sierra Part #18-7879-1

  • Oil filter

  • For Chrysler Force/Mercury Marine/OMC/Volvo engine

$5.99
Sierra Fast Orange Handle Cleaner, Sierra Part #18-9022-1

Sierra Fast Orange Handle Cleaner, Sierra Part #18-9022-1

Key Features
  • Sierra Part #18-9022-1

  • Fast orange hand cleaner

  • 15 oz.

$11.29
Sierra Oil Filter For Mercury Marine/Volvo Engine, Sierra Part #18-7878-1

Sierra Oil Filter For Mercury Marine/Volvo Engine, Sierra Part #...

Key Features
  • Sierra Part #18-7878-1

  • Oil filter

  • For Mercury Marine/Volvo engine

$12.99

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