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Boat Accessories and Supplies

Boat Accessories and Supplies

  • Sierra 18-8852 Batt Cable Red 4 Ga Bc88523
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    Sierra 18-8852 Batt Cable Red 4 Ga Bc88523

    Sierra

    $20.59 $16.07
    Sierra 18-8852 Batt Cable Red 4 Ga Bc88523Features a soldered lug terminal on each end to accept a 3/8" stud.
    Part Number:
    11-BC88523
    Availability:
    In Stock - Ships same or next business day.
    Gauge:
    4
    Color:
    Red
    Length:
    24"
    $20.59 $16.07
    Add to Cart
  • Sierra 2 Pos. OFF-ON Ignition Switch Mp39020
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    Sierra 2 Pos. OFF-ON Ignition Switch Mp39020

    Sierra

    $46.39 $32.55
    Sierra 2 Pos. OFF-ON Ignition Switch Mp39020All amperage ratings are at 12V DC.Polyester Switches: Provide maximum corrosion protection and eliminate potential shorts. Inner seal between cylinder lock and contact plate.Brass Switches: Traditional...
    Part Number:
    11-MP39020
    Availability:
    In Stock - Ships same or next business day.
    Type:
    Conventional
    Material:
    Brass
    Max Panel Thickness:
    1-1/8"
    Terminals:
    2 Screw
    Boot:
    No
    Mtg Hole:
    7/8"
    $46.39 $32.55
    Add to Cart
  • Sierra 6 Gang Ato/Atc Fuse Block Fs40420
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    Sierra 6 Gang Ato/Atc Fuse Block Fs40420

    Sierra

    $36.09 $24.95
    Sierra 6 Gang Ato/Atc Fuse Block Fs40420For ATO/ATC fuses Interlocking modules snap together 1/4" tin plated copper tab terminals Rated 30 Amp per circuit; 160 amp max for block
    Part Number:
    11-FS40420
    Availability:
    In Stock - Ships same or next business day.
    Gang:
    6
    Fuse:
    ATO/ATC
    Neg Bus:
    Yes
    Size:
    3-3/4" x 3-1/4"
    $36.09 $24.95
    Add to Cart
  • Sierra Batt Cables Red 2 Gauge 4' Bc88543
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    Sierra Batt Cables Red 2 Gauge 4' Bc88543

    Sierra

    $44.89 $35.19
    Sierra Batt Cables Red 2 Gauge 4' Bc88543Features a soldered lug terminal on each end to accept a 3/8" stud.
    Part Number:
    11-BC88543
    Availability:
    In Stock - Ships same or next business day.
    Gauge:
    2
    Color:
    Red
    Length:
    48"
    $44.89 $35.19
    Add to Cart
  • Sierra Batt Isolator 1-Alt 2-Bat 130A 18-6851
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    Sierra Batt Isolator 1-Alt 2-Bat 130A 18-6851

    Sierra

    $199.99 $177.73
    Sierra Batt Isolator 1-Alt 2-Bat 130A 18-6851Battery isolators allow you to charge multiple batteries from a single source.* Will not work with Delco "CS" style alternators.
    Part Number:
    47-6851
    Availability:
    In Stock - Ships same or next business day.
    Amps:
    130
    Application:
    1 alternator / 2 batteries*
    $199.99 $177.73
    Add to Cart
  • Sierra Batt Isolator 1-Alt 2-Batt 75A 18-6855
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    Sierra Batt Isolator 1-Alt 2-Batt 75A 18-6855

    Sierra

    $111.89 $101.21
    Sierra Batt Isolator 1-Alt 2-Batt 75A 18-6855Battery isolators allow you to charge multiple batteries from a single source.* Will not work with Delco "CS" style alternators.
    Part Number:
    47-6855
    Availability:
    In Stock - Ships same or next business day.
    Amps:
    75
    Application:
    1 alternator / 2 batteries*
    $111.89 $101.21
    Add to Cart
  • Sierra Batt Isolator 1-Alt 3-Bat 160A 18-6854
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    Sierra Batt Isolator 1-Alt 3-Bat 160A 18-6854

    Sierra

    $352.09 $314.78
    Sierra Batt Isolator 1-Alt 3-Bat 160A 18-6854Battery isolators allow you to charge multiple batteries from a single source.* Will not work with Delco "CS" style alternators.
    Part Number:
    47-6854
    Availability:
    In Stock - Ships same or next business day.
    Amps:
    160
    Application:
    1 alternator / 3 batteries
    $352.09 $314.78
    Add to Cart
  • Sierra Black Handle 2 Pos Toggle Swtch Hd Tg21130
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    Sierra Black Handle 2 Pos Toggle Swtch Hd Tg21130

    Sierra

    $9.69 $8.55
    Sierra Black Handle 2 Pos Toggle Swtch Hd Tg21130Non-corrosive plastic construction; plastic handle1/2" mounting holeRated 15 amp @ 12 VDCON in parenthesis (On) indicates a momentary position
    Part Number:
    11-TG21130
    Availability:
    In Stock - Ships same or next business day.
    Description:
    On/Off
    Terminals:
    2 Blade
    Type:
    SPST
    Pkg.:
    Retail
    $9.69 $8.55
    Add to Cart
  • Sierra Boot W/Chrome Ring Mp39280
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    Sierra Boot W/Chrome Ring Mp39280

    Sierra

    $11.69 $9.53
    Sierra Boot W/Chrome Ring Mp39280All boots fit 15/32'' mounting stems. MP 39220 works with illuminated switches (except duckbill) where handle sticks out through the boot for visibility. All other boots fit toggle up to 1-1/4'' long. Seals out moisture...
    Part Number:
    11-MP39280
    Availability:
    In Stock - Ships same or next business day.
    Color:
    Black
    $11.69 $9.53
    Add to Cart
  • Sierra Bracket-Rocker Switch 1 Center Un19710
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    Sierra Bracket-Rocker Switch 1 Center Un19710

    Sierra

    $11.59 $7.90
    Sierra Bracket-Rocker Switch 1 Center Un19710Fits Sierra Standard and Contura® rocker switches. Sections snap together without using tools.UN19750 Kit includes: Two End Sections (UN19740); 1 Middle Section (UN19710); 1 Blank Cover (UN19700).
    Part Number:
    11-UN19710
    Availability:
    In Stock - Ships same or next business day.
    Description:
    1 Center
    $11.59 $7.90
    Add to Cart

Shop the Best Boat Accessories Online

Whether you're prepping for a weekend on the water or upgrading your gear, PowerBoatSupply.com has all the boat accessories you need. From electrical components and drink holders to safety gear and dock lines, our wide selection of boat accessories ensures you're ready for anything out on the water.

We carry trusted brands like Sea-Dog Line, Seachoice, Attwood Marine, and more — offering both essential and specialized boat accessories for every type of boater. Not sure which part is right for your setup? Our team is here to help you choose the best boat accessories for your vessel and your adventures.

Browse our best-selling items below and get fast shipping, great prices, and top-rated customer service from PowerBoatSupply.com — your source for quality marine parts and accessories since 1987.