Boat Accessories and Supplies
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Seachoice Square U 3/8-16 x 1-5/8 x 3-9/16 Bulk 57320
Seachoice
$6.49 $4.49Seachoice Square U 3/8-16 x 1-5/8 x 3-9/16 Bulk 57320 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57320
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8"-16
- A:
- 1-5/8"
- B:
- 3-9/16"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- Axle U-Bolt plates
$6.49 $4.49 -
Seachoice Square U 3/8-16 x 2-1/16 x 3-3/8 57330
Seachoice
$11.89 $3.76Seachoice Square U 3/8-16 x 2-1/16 x 3-3/8 57330 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applications- Part Number:
- 50-57330
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8"-16
- A:
- 2-1/16"
- B:
- 3-3/8"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- 2" Frame Tie Plates
$11.89 $3.76 -
Sierra 3 Pos.Ignition Switch Searay Mp41030
Sierra
$28.29 $25.99Sierra 3 Pos.Ignition Switch Searay Mp41030All 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-MP41030
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Conventional
- Material:
- Polyester
- Max Panel Thickness:
- 5/8"
- Terminals:
- 3 Screw
- Boot:
- Yes
- Mtg Hole:
- 7/8"
$28.29 $25.99 -
Tiedown Engineering Plastic Fender 8-12 Inches Black 17033
Tiedown Engineering
$24.99 $18.72Tiedown Engineering Plastic Fender 8-12 Inches Black 17033 An attractive upgrade to any trailer, these high impact polyethylene fenders are UV protected. Designed for normal and low profile tires. Each fender requires 2 mounting brackets. Small: 21" L...- Part Number:
- 241-17033
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Small
- Color:
- Black
- Capacity:
- No Load
$24.99 $18.72 -
Attwood Marine Boat Flush Transom Stern Light 3-inch Round Incandescent with 7.5-Watt Lamp 6356D7
Attwood Marine
$40.29 $23.99Attwood Marine Flush Stern Light 3 Round 6356D7 Stainless steel with plastic body and watertight lamp socket. Provide 2-mile visibility for craft up to 164' in length. 7-1/2 watt lamp and two stainless steel #10 screws included. Model 6356 has a...- Part Number:
- 23-6356D7
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Round
- Size:
- 3" dia.
$40.29 $23.99 -
Attwood Marine Group 24 Battery Holder 9092-5
Attwood Marine
$12.19 $10.99Attwood Marine Group 24 Battery Holder 9092-5 A simple-to-install battery tray that fits into a limited space. For batteries up to 10-1/2" in height. Provides simple installation for changing or replacing batteries. The polypropylene hold-down strap has...- Part Number:
- 23-90925
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Group 24
- ID:
- 12-3/8" L x 7-1/8" W
$12.19 $10.99 -
Bearing Buddy #11 Spindo Seal Kit Cd 60011
Bearing Buddy
$32.99 $27.31Bearing Buddy #11 Spindo Seal Kit Cd 60011For use with Bearing Buddy on trailers with brakes or as replacement seals. Lets seal ride on permanently smooth, corrosion-proof surface constantly greased by action of Bearing Buddy. Seals will last much longer...- Part Number:
- 176-60011
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 2441
- Bearing Cone:
- 25580
- Seal:
- 3.38"
- Pack:
- 2
$32.99 $27.31 -
Beckson Marine Standard Drink Holder Gray Gh33-S1
Beckson Marine
$6.89 $6.58Beckson Marine Standard Drink Holder Gray Gh33-S1Install almost anywhere. There are molded in stand-offs on the bottom of holders to help prevent condensation build-up and keep containers from sticking to the bottom, and four generous holes that allow...- Part Number:
- 35-GH33S1
- Availability:
- In Stock - Ships same or next business day.
- Color:
- Grey
- Size:
- 2-11/16" ID x 2-7/8" D
- Hole:
- 3"
$6.89 $6.58 -
Carver Covers Support Pole with Vent 500-60002
Carver Covers
$57.99 $42.99Carver Covers Support Pole with Vent 500-60002 The innovative vent assembly allows any boat cover to vent to help prevent mold and mildew inside the boat. Includes an anodized aluminum telescoping pole, vent, and instructions.- Part Number:
- 500-60002
- Availability:
- In Stock - Ships same or next business day.
- Length:
- 22" to 70"
$57.99 $42.99 -
Sea-Dog Line Drink Holder Sgl/Dual with Suc Cups 588510-1
SEA-DOG LINE
$18.75 $14.51Sea-Dog Line Drink Holder Sgl/Dual with Suc Cups 588510-1Injected Molded Nylon. Mounts easily to most surfaces with suction cups.5885101 Expands from single to dual cups5885201 Expands from dual to quad cups- Part Number:
- 354-5885101
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Single/Dual
- Size:
- 4-1/4" Wide (Expands to 8-1/8")
$18.75 $14.51 -
Sea-Dog Line Poly Rail Mount Rod Holder - W 327161-1
SEA-DOG LINE
$37.86 $28.99Sea-Dog Line Poly Rail Mount Rod Holder - W 327161-1 Designed with a front mount adjustment screw, this allows easy adjustment without having to disassemble the rail mount brackets. A safety line on the rod and or reel is recommended when using rail...- Part Number:
- 354-3271611
- Availability:
- In Stock - Ships same or next business day.
- Color:
- White
- Size:
- 11-3/4" L x 1-3/4" ID
- Fits:
- 7/8" to 1" Dia
$37.86 $28.99 -
Sea-Dog Line Thumb Latch 324180-1
SEA-DOG LINE
$4.99 $4.89Sea-Dog Line Thumb Latch 324180-1 These Windshield Latches are used to secure windshield doors with a simple twist design. Prevents rattling due to engine vibration at high speeds. Constructed of UV resistant black injection molded nylon...- Part Number:
- 354-3241801
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Injection Molded Nylon
- A:
- 1-1/2"
- B:
- 11/16'
- C:
- 3/16"
- D:
- 1/16"
$4.99 $4.89 -
Seachoice Drink Holder/Cozy 50-79381
Seachoice
$25.99 $17.99Seachoice Drink Holder/Cozy 50-79381 Large Super Suction&trade, cupsNon-corrosiveMounts on any smooth surfaceCan be permanently attached with screws.- Part Number:
- 50-79381
- Availability:
- In Stock - Ships same or next business day.
- Color:
- White
$25.99 $17.99 -
Seachoice Rod Holder-Side Mount-Poly-Black 89461
Seachoice
$9.69 $9.49Seachoice Rod Holder-Side Mount-Poly-Black 89461 Made of high density polyurethaneAccommodates standard rod grip sizes up to 1-3/4" (4.4 cm)Mounting spacers are permanently attachedFasteners includedUV Resistant.- Part Number:
- 50-89461
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 12" L x 1-3/4" ID
- Color:
- Black
$9.69 $9.49 -
Seachoice Spare Lug Nut-1/2 x 20 (5) 53911
Seachoice
$7.99 $6.01Seachoice Spare Lug Nut-1/2 x 20 (5) 53911 Replacement parts for commonly used trailer wheels- Part Number:
- 50-53911
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Spare Lug Nuts - 1/2-20
- Pack:
- 5
$7.99 $6.01 -
Seachoice Wheel Chock Bulk 52110
Seachoice
$7.99 $6.85Seachoice Wheel Chock Bulk 52110 Keeps your trailer in place so you can re-hitch safely • Constructed of durable hard plastic with UV inhibitors • Includes rope for convenient placement and removal- Part Number:
- 50-52110
- Availability:
- In Stock - Ships same or next business day.
$7.99 $6.85 -
Sierra Coil ed Lanyard For 4097 Switch Mp40990
Sierra
$18.69 $16.99Sierra Coil ed Lanyard For 4097 Switch Mp40990- Part Number:
- 11-MP40990
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Replacement Lanyard
$18.69 $16.99 -
Sierra Marine Boat Ignition Switch MP39730
Sierra
$32.59 $29.99Sierra Switch Mp39730 All 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 corrosion resistant...- Part Number:
- 11-MP39730
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Magneto
- Material:
- Polyester
- Max Panel Thickness:
- 5/8"
- Terminals:
- 7 Screw
- Boot:
- No
- Mtg Hole:
- 7/8"
$32.59 $29.99 -
Taylor Medium Dock & Post Bumper Db330
Taylor
$69.49 $59.99Taylor Medium Dock & Post Bumper Db330Will not deteriorate in the sun or mar boats. They utilize a heavy duty; 100% polyester textile encasement that cleans easily with liquid detergent and the resilient closed-cell foam inner cushion provides...- Part Number:
- 32-DB330
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Medium
- Size:
- 4-1/2" x 3'
$69.49 $59.99 -
Attwood Marine Battery Tray 27M-with Cross Bar 9091-5
Attwood Marine
$16.99 $10.99Attwood Marine Battery Tray 27M-with Cross Bar 9091-5 Heavy-duty, non-corrosive, black plastic. Includes adjustable-height crossbar and two retaining bolts. Meets ABYC Standard E-10 and USCG requirements. Patented design. Install with #10 screws.- Part Number:
- 23-90915
- Availability:
- In Stock - Ships same or next business day.
- Fits:
- Series 27/27M
- ID:
- 12-1/8" L x 6-3/4" W x 8-3/4" H
$16.99 $10.99
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.