FREE SHIPPING OVER $99 · EXCL. OVERSIZE

BEST PRICE GUARANTEED

EARN POWERBOAT REWARDS

SUPPORT M-F 9-5 EST: 856-232-6969

  • Sea-Dog Line Thru-Hull Fitting 5/8" 520740-1
  • Sea-Dog Line Thru-Hull Fitting 5/8" 520740-1
  • Sea-Dog Line Thru-Hull Fitting 5/8" 520740-1
  • Sea-Dog Line Thru-Hull Fitting 5/8" 520740-1
Marine parts, fast fulfillment, real support
Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.
✓ Fast shipping ✓ Fitment help ✓ Secure checkout

Sea-Dog Line Thru-Hull Fitting 5/8" 520740-1

Marine parts, fast fulfillment, real support
Get the right part without slowing down your season. PowerBoatSupply helps boat owners order with confidence, backed by trusted marine parts expertise and responsive support.
✓ Fast shipping ✓ Fitment help ✓ Secure checkout
Brand:
Part Number:
354-5207401
$7.35
Earn $0.22 in PBS Store Credit
Availability: In Stock - Ships same or next business day. Shipping: Free Shipping Over $99
Prices may increase soon. Order now to secure today's pricing.


Get back on the water faster — ships next business day.
Trusted by boat owners & marine techs
Real OEM parts, fast shipping, and support from a Mercury Platinum Dealer.
✓ Best Price ✓ Fast Fulfillment ✓ Trusted Fitment ✓ Real Support
✓ 18,500+ verified 5-star reviews

Description

These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass in or out of a vessel. Designed for drainage above the water line. Constructed of injection molded polypropylene.

View AllClose

Warranty Information

We are an authorized reseller for all products listed on our website. Please contact the manufacturer for warranty info.
View AllClose

Specs

UPC:
035514520232
MPN:
520740-1
A:
1-3/4"
B:
1/2"
C:
1-11/16"
D:
3-1/2"
E:
1"
F:
5/8"

Reviews

View AllClose