Free Shipping on Orders $99+
Contact Us
Orders Product Guides
Boat Parts Worldwide

Thru-Hulls & Seacocks

Products: 1 - 50 of 79
Page:  1 | 2   Next >
Groco, 316 Stainless Steel Thru Hull with Nut, TH Series

Groco, 316 Stainless Steel Thru Hull with Nut, TH Series

Mfr. Groco

Groco, Standard length Thru Hull Fittings made from 316 Stainless Steel are ISO 9093-1 certified and come with a matching nut...
Sale Price From $11.15

View Details
Groco, Bronze Flush Thru Hull with Nut, FTH Series

Groco, Bronze Flush Thru Hull with Nut, FTH Series

Mfr. Groco

Groco, Bronze Flush Thru Hull with Nut, FTH Series. Includes locknut with bonding screw.
Sale Price From $26.98

View Details
Groco, Bronze Thru Hulls with Nuts, TH Series

Groco, Bronze Thru Hulls with Nuts, TH Series

Mfr. Groco

Groco, Bronze Thru Hulls with Nuts, TH Series. Locknut has bonding connection.
Sale Price From $13.44

View Details
Groco, Bronze Thru-Hull Scoop Strainers, STH Series

Groco, Bronze Thru-Hull Scoop Strainers, STH Series

Mfr. Groco

Groco, Bronze Thru-Hull Scoop Strainers, STH Series. Includes locking nut.
Sale Price From $18.57

View Details
Groco, Bronze, Full-Flow Flanged Ball-type Seacocks, BV Series

Groco, Bronze, Full-Flow Flanged Ball-type Seacocks, BV Series

Mfr. Groco

Flanged valve body for strong and secure installation. Stainless steel ball and stem. Teflon seats and seals. Base is provided with a bon...
Sale Price From $132.11

View Details
Thru-Hull Bung Safety Plug, DC Plug, Teak

Thru-Hull Bung Safety Plug, DC Plug, Teak

Mfr. Waterbrands LLC

Thru-Hull Bung Safety Plug, DC Plug, Teak...
Sale Price From $5.69

View Details
3/4" Double-Ended Thru-Hull Connector

3/4" Double-Ended Thru-Hull Connector

Mfr. Attwood Marine | Mfr No. 3878-3

Provides watertight transition through bulkheads or tanks. Polypropylene construction.
$8.93
On Sale


View Details
Replacement Flange Nuts for Bronze Thru Hulls, Flush Type

Replacement Flange Nuts for Bronze Thru Hulls, Flush Type

Mfr. Buck Algonquin

Replacement Flange Nuts for Bronze Thru Hulls, Flush Type. Cast bronze...
Sale Price From $2.44

View Details
Thru Hull Connections with Hose Barb

Thru Hull Connections with Hose Barb

Mfr. Buck Algonquin

Machine finished bronze marine Thru Hull Connections with hose barb end comes complete with flange nut...
$45.96 - $57.91

View Details
Forespar 253 Series, Marelon Hose Tailpipe/Mushroom Head Thru-Hull Connectors,

Forespar 253 Series, Marelon Hose Tailpipe/Mushroom Head Thru-Hull Connectors,

Mfr. Forespar

Forespar's series of Thru-Hull Connectors are precision molded in high strength Marelon. Their great strength, light weight and complete freedom from corro...
$12.76 - $27.16

View Details
Groco Stainless Steel Ball Valves, IBV-S Series

Groco Stainless Steel Ball Valves, IBV-S Series

Mfr. Groco

Groco Stainless Steel Ball Valves, IBV-S Series. Handle has square hole to accept standard ratchet, (helps to reach hard-to-reach valves and eases actuation of hard to operate valves)...
Sale Price From $36.92

View Details
Groco, Bronze Thru-Hull Fitting, Long, THXL Series, w/ Nut

Groco, Bronze Thru-Hull Fitting, Long, THXL Series, w/ Nut

Mfr. Groco

Groco THLX series extra long bronze Thru-Hull connection for installations requiring extra length due to hull thickness...
Sale Price From $20.00

View Details
Groco, Straight Stainless Steel Thru-Hull Fittings, HTH-xxx-S Series

Groco, Straight Stainless Steel Thru-Hull Fittings, HTH-xxx-S Series

Mfr. Groco

Groco, Straight Stainless Steel Thru-Hull Fittings, HTH-xxx-S Series. Has locknut with bonding screw....
Sale Price From $15.74

View Details
Perko, Spare Flanged Lock Nut

Perko, Spare Flanged Lock Nut

Mfr. Perko

Perko, Spare Flanged Lock Nut. Molded white plastic...
Sale Price From $2.79

View Details
Perko, Thru Hull Connections, for Hoses, Plastic, Wide Flange

Perko, Thru Hull Connections, for Hoses, Plastic, Wide Flange

Mfr. Perko

Sale Price From $4.11

View Details
Rule 90 Degree Thru Hull Fitting, 3/4"

Rule 90 Degree Thru Hull Fitting, 3/4"

Mfr. Rule

Rule's 90 Degree Thru-Hull Hose Fittings composed of a high impact molded plastic so they will not rust, corrode or discolor. Designed for use with Rule's line of bilge pumps...
Sale Price From $8.05

View Details
Sea-Dog, Bait Well / Livewell Tank Drain Plugs, Brass / Neoprene

Sea-Dog, Bait Well / Livewell Tank Drain Plugs, Brass / Neoprene

Mfr. Sea-Dog

Sea-Dog, Bait Well / Livewell Tank Drain Plugs, Brass / Neoprene. Neoprene sealing plug that exerts pressure for a leak proof seal...
Sale Price From $3.29

View Details
Sea-Dog, Drain Plug, Chrome / Nylon

Sea-Dog, Drain Plug, Chrome / Nylon

Mfr. Sea-Dog | Mfr No. 520020-1

Sea-Dog, Drain Plug, Chrome / Nylon. Plug has a molded-in captive mechanism keeping the plug in the body but still allows easy removal of the plug when required...
$6.15
On Sale


View Details
Sea-Dog, Drain Plug, Nylon

Sea-Dog, Drain Plug, Nylon

Mfr. Sea-Dog

Sea-Dog, Drain Plug, Nylon. A molded-in captive mechanism keeps the plug in the body but still allows easy removal of the plug when required...
Sale Price From $2.09

View Details
Sea-Dog, Drain Plug, Nylon

Sea-Dog, Drain Plug, Nylon

Mfr. Sea-Dog | Mfr No. 520010-1

Sea-Dog, Drain Plug, Nylon. Designed with a molded-in recess in the base which traps sealant in place for a more water-tight seal...
$2.36
On Sale


View Details
Sea-Dog, Garboard Drain & Plug, Machined Bronze

Sea-Dog, Garboard Drain & Plug, Machined Bronze

Mfr. Sea-Dog | Mfr No. 520040-1

Sea-Dog, Garboard Drain & Plug, Machined Bronze.
$8.15
On Sale


View Details
Sea-Dog, Garboard Drain Plug, Replacement Plug Only

Sea-Dog, Garboard Drain Plug, Replacement Plug Only

Mfr. Sea-Dog | Mfr No. 520041-1

Replacement Plug for Sea-Dog's Garboard Drain with 1/2" NPT thread. This is only the plug to replace one if you lost your original and need to keep the water out of your boat...
$3.92
On Sale


View Details
Sea-Dog, Scupper Valve, Nylon

Sea-Dog, Scupper Valve, Nylon

Mfr. Sea-Dog | Mfr No. 520520-1

Sea-Dog, Boat Scupper Valve, 6" x 2-1/4", nylon with neoprene flapper...
$16.52
On Sale


View Details
Sea-Dog, Replacement Drain Plug, Nylon

Sea-Dog, Replacement Drain Plug, Nylon

Mfr. Sea-Dog | Mfr No. 520021-1

Sea-Dog, Replacement Plug for Sea-Dog Line marine drain plugs 520010. 520020, & 520030...
$2.66
On Sale


View Details
Sea-Dog, Scupper Valve, Nylon

Sea-Dog, Scupper Valve, Nylon

Mfr. Sea-Dog | Mfr No. 520500-1

Sea-Dog, Scupper Valve, Nylon...
$2.80
On Sale


View Details
Sea-Dog, Snap Handle Drain Plug, Stamped Stainless

Sea-Dog, Snap Handle Drain Plug, Stamped Stainless

Mfr. Sea-Dog | Mfr No. 520075-1

Sea-Dog, Snap Handle Drain Plug, Stamped Stainless.
$4.38
On Sale


View Details
Sea-Dog, Snap Handle Drain Plug, Brass

Sea-Dog, Snap Handle Drain Plug, Brass

Mfr. Sea-Dog

Sea-Dog, Snap Handle Drain Plug, Stamped Brass...
Sale Price From $3.90

View Details
Sea-Dog, T-Handle Drain Plug, Stamped Brass

Sea-Dog, T-Handle Drain Plug, Stamped Brass

Mfr. Sea-Dog

Sea-Dog, T-Handle Drain Plug, Stamped Brass...
Sale Price From $2.40

View Details
Attwood Straight Thru-Hull Connections

Attwood Straight Thru-Hull Connections

Mfr. Attwood Marine

Attwood Straight Thru-Hull Connections are made from a durable, thermoplastic to prevents electrolysis and ideal for use on wash-down and livewell overflow drains, etc...
Sale Price From $2.10

View Details
Attwood, 3880-1, 90 Degree Thru-Hull Connector, 3/4", Black

Attwood, 3880-1, 90 Degree Thru-Hull Connector, 3/4", Black

Mfr. Attwood Marine | Mfr No. 38801

Attwood boat Thru-Hull 90° Elbow Connectors are ideal for tight installations, such as livewell overflow drains, and eliminate hose kinking. Polypropylene construction...
$14.51
On Sale


View Details
Attwood, 3877, 90 Degree Thru-Hull Connector, 3/4", White

Attwood, 3877, 90 Degree Thru-Hull Connector, 3/4", White

Mfr. Attwood Marine

Attwood boat Thru-Hull 90° Elbow Connectors are ideal for tight installations, such as livewell overflow drains, and eliminate hose kinking. Polypropylene construction
Sale Price From $5.84

View Details
Attwood, 3879, 90 Degree Thru-Hull Connector, 1-1/8", White

Attwood, 3879, 90 Degree Thru-Hull Connector, 1-1/8", White

Mfr. Attwood Marine

Attwood boat Thru-Hull 90° Elbow Connectors are ideal for tight installations, such as livewell overflow drains, and eliminate hose kinking. Polypropylene construction.
Sale Price From $9.38

View Details
Gem Stainless Steel Thru-Hulls 90-Degree, Barbed

Gem Stainless Steel Thru-Hulls 90-Degree, Barbed

Mfr. Gem Products (Gemlux) | Mfr No. AM78002

GEM threaded thru-hulls provide the ultimate connection for pipe fittings, ball valves or sea-cocks.
$27.91


View Details
Gem Stainless Steel Thru-Hulls with Nut

Gem Stainless Steel Thru-Hulls with Nut

Mfr. Gem Products (Gemlux)

GEM threaded thru-hulls provide the ultimate connection for pipe fittings, ball valves or sea-cocks.
Sale Price From $16.68

View Details
Stainless Steel Barbed Cast Thru-Hulls

Stainless Steel Barbed Cast Thru-Hulls

Mfr. Gem Products (Gemlux)

GEM barbed thru-hulls are great for your hose connections. Barbs available in many sizes to ensure a correct fit.
Sale Price From $12.46

View Details
Repair Kit for Groco SVS Seacock / Strainer

Repair Kit for Groco SVS Seacock / Strainer

Mfr. Groco | Mfr No. SVS

Repair Kit for Groco SVS Seacock / Strainer
$18.41
On Sale


View Details
Perko, Garboard Drain Plug

Perko, Garboard Drain Plug

Mfr. Perko | Mfr No. 0714DP1PLB

Perko, Garboard Drain Plug. Cast bronze flange and brass plug...
$25.29
On Sale


View Details
Spare Plug w/ Chain

Spare Plug w/ Chain

Mfr. Perko | Mfr No. 0499DP099A

Spare Plug w/ Chain
$12.18
On Sale


View Details
Sea-Dog, Drain Tube Flaring Tools

Sea-Dog, Drain Tube Flaring Tools

Mfr. Sea-Dog | Mfr No. 520290-1

Sea-Dog Drain Tube Flaring Tools for installing 1" marine drain tubes on your boat...
$17.93


View Details
Sea-Dog, Captive Garboard Drain & Plug

Sea-Dog, Captive Garboard Drain & Plug

Mfr. Sea-Dog | Mfr No. 520060

Sea-Dog, Captive Garboard Drain & Plug. Investment cast 316 stainless...
$12.49
On Sale


View Details
Sea-Dog, Garboard Drain & Plug

Sea-Dog, Garboard Drain & Plug

Mfr. Sea-Dog | Mfr No. 520042-1

Sea-Dog, Garboard Drain & Plug. Die cast bronze...
$8.56
On Sale


View Details
Sea-Dog, Garboard Drain & Plug, Short Tube

Sea-Dog, Garboard Drain & Plug, Short Tube

Mfr. Sea-Dog | Mfr No. 520055-1

Sea-Dog, Garboard Drain & Plug, Short Tube. Injection molded nylon...
$4.13
On Sale


View Details
Sea-Dog, Plugmate Garboard Plug Wrench

Sea-Dog, Plugmate Garboard Plug Wrench

Mfr. Sea-Dog | Mfr No. 520045-1

Sea-Dog, Plugmate Garboard Plug Wrench.Has multiple deck keys and will also fit garboard "T" style plugs...
$7.76
On Sale


View Details
Sea-Dog, Stainless Steel Drain Covers, 2-1/2" or 3-1/4"

Sea-Dog, Stainless Steel Drain Covers, 2-1/2" or 3-1/4"

Mfr. Sea-Dog

Sea-Dog, Stainless Steel Drain Covers, 2-1/2" or 3-1/4". Stamped 304...
Sale Price From $1.90

View Details
Sea-Dog, T-Handle Drain Plug

Sea-Dog, T-Handle Drain Plug

Mfr. Sea-Dog | Mfr No. 520085-1

Sea-Dog, T-Handle Drain Plug. Stamped stainless steel...
$4.09
On Sale


View Details
Forespar MF 849, Marelon Flange Mount Seacocks

Forespar MF 849, Marelon Flange Mount Seacocks

Mfr. Forespar | Mfr No. 904011

Extremely strong and reliable marine grade plumbing fittings. Carefully designed for ease of installation, versatility
$106.58


View Details
Thru-Hull Valves, 93 Series Marelon Seacocks

Thru-Hull Valves, 93 Series Marelon Seacocks

Mfr. Forespar | Mfr No. 931145

93 Series Marelon Seacock Thru-Hull Valves are recommended for below or above waterline use and available with mushroom or flush thru-hulls to fit your boating needs...
$143.55


View Details
Bronze Extra Long Threaded Thru Hulls with Nut

Bronze Extra Long Threaded Thru Hulls with Nut

Mfr. Buck Algonquin

Bronze Extra Long Threaded Thru Hulls with Nut
Sale Price From $32.38

View Details
Thru Hull Installation Step Wrench

Thru Hull Installation Step Wrench

Mfr. Buck Algonquin | Mfr No. 3BTHW50150

Thru Hull Installation Step Wrench designed for use with Buck Algonquin thru-hulls...
$39.22
On Sale


View Details
Forespar 251 Series, Marelon Full Threaded/Mushroom Head Thru-Hull Connectors

Forespar 251 Series, Marelon Full Threaded/Mushroom Head Thru-Hull Connectors

Mfr. Forespar

Forespar 251 Series, Marelon Full Threaded/Mushroom Head Thru-Hull Connectors are precision molded in high strength Marelon. Their great strength, light weight and complet
$11.96 - $29.56

View Details
Products: 1 - 50 of 79
Page:  1 | 2   Next >

Ask. Answer. Discuss.
Post a question or comment about Thru-Hulls & Seacocks to our online boating community.
Question
Thru Hull

Looking for a thru hull fitting that needs to fit in a cut out opening size 2 1/8, thickness of the hull is 2 1/8, and is attached to a 1 1/2 drain hoses. Pathfinder boat. Drain system for the deck . Thanks

Submitted by: patrick
Answer

We offer a few different types of Thru Hull fittings depending on what material you desire. The part number 220573 is a stainless steel version of what you are wanting.

Thank you.


Question
Hull Fittings

I would like to know if you carry Through-hull fittings. I’m looking specifically for a deck drain fitting that I need to replace. My existing fittings are plastic & I want to change to chrome fittings. My boat is a 24’ Maxum.

Submitted by: Peter
Answer

We have a variety of Metal Thru Hull Fittings available but you will need to match it with what you need. We do not have information as to what your particular boat came with.


 
Name / Nickname:

Email:
(optional)


Type of Submission:

Subject:

Message:
Tips on Reviewing:
  • How you use the product
  • What you like about this product
  • How can this product be improved
  • When asking about Engine Parts, please include: Year, Make, Model and Serial Number of engine or part

Please do not include: personal information, profanity or copyrighted works. Conditions of Use