U.S. Customers: Orders shipped from Canada may be subject to U.S. import duties, taxes, and/or tariffs as assessed by U.S. Customs and your carrier. These charges are not included in our product prices or shipping rates. You are responsible for any duties/tariffs/fees due on delivery or prior to delivery.
Packed and shipped within Canada!

Premium Marine Quality Parts

Assuming lock is required, the following 5898 results were found.

  • 1" Thru-Hull With Nut - Th-100-W - 34-Th100Wf1

    Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.... Read more...

    • Type: Virtuemart Product
    • Brand: Groco
    • Brand: Groco
  • 1-1/4" Thru-Hull With Nut - Th-125-W - 34-Th125Wf1

    Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.... Read more...

    • Type: Virtuemart Product
    • Brand: Groco
    • Brand: Groco
  • 1-1/2" Thru-Hull With Nut - Th-150-W - 34-Th150Wf1

    Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.... Read more...

    • Type: Virtuemart Product
    • Brand: Groco
    • Brand: Groco
  • 2" Thru-Hull With Nut - Th-200-W - 34-Th200Wf1

    Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.... Read more...

    • Type: Virtuemart Product
    • Brand: Groco
    • Brand: Groco
  • 3/4" Thru-Hull With Nut - Th-75-W - 34-Th75Wf1

    Should have threaded portion cut to proper length considering hull and butt block thickness. Consider thread depth when using a seacock. Sealant is recommended between hull and thru-hull flange. Includes nut.NOT TO BE USED IN POTABLE WATER SYSTEMS.... Read more...

    • Type: Virtuemart Product
    • Brand: Groco
    • Brand: Groco
  • New Starter - 18-5910 - 47-5910F1

    Small block V6 & V8 W/ 14-1/4" flywheel & bottom mountOffset bolt pattern, standard rotationReplaces: Mercruiser 50-12177A2, 50-99418A2 Small block V6 & V8 W/ 14-1/4" flywheel & bottom mountOffset bolt pattern, standard rotationReplaces: Mercruiser... Read more...

Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.