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Thru-Hulls & Seacocks

Products: 1 - 50 of 82
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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
$119.18


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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


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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 $11.33

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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 $27.87

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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 $12.00

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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 $19.18

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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...
$137.14 - $696.88

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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 $5.79

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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.
$8.87
On Sale


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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
$33.99 - $103.68

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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 $2.48

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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...
$43.33 - $59.77

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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

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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

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Forespar 250 Series, Marelon Full Threaded/Flush Head Thru-Hull Connectors

Forespar 250 Series, Marelon Full Threaded/Flush Head Thru-Hull Connectors

Mfr. Forespar | Mfr No. 906008

Forespar 250 Series, Marelon Full Threaded/Flush Head Thru-Hull Connectors are precision molded in high strength Marelon. Their great strength, light weight and complete freedom...
$21.96


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Forespar, Flush Head Drains with Screen, Marelon

Forespar, Flush Head Drains with Screen, Marelon

Mfr. Forespar

Forespar Flush Head Drains with screen. All parts made out of Marelon marine polymer for years of use onboard. Thru-hull head drains with zero corrosion, zero electrolysis...
$22.36 - $37.03

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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)...
$36.92 - $122.34

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Groco, 1" Hose Barb Bronze Hose Thru Hull

Groco, 1" Hose Barb Bronze Hose Thru Hull

Mfr. Groco | Mfr No. HTH-1000

Groco, 1" Hose Barb Bronze Hose Thru Hull...
$21.99


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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 $20.66

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Groco, Bronze, Full-Flow, Flanged Safety Seacocks, SBV Series

Groco, Bronze, Full-Flow, Flanged Safety Seacocks, SBV Series

Mfr. Groco

Flanged valve body for strong and secure installation. Stainless steel ball and stem. Teflon seats and seals. Base is provided for bondin...
$395.13 - $632.04

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Groco, Lock Nuts for Thru-Hull Fittings, Bronze or Stainless Steel

Groco, Lock Nuts for Thru-Hull Fittings, Bronze or Stainless Steel

Mfr. Groco

Groco, Bronze and Stainless Steel Lock Nuts for Groco Thru-Hull Fittings...
$4.88 - $65.41

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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 $16.00

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Perko, Bronze Thru-Hull Fitting

Perko, Bronze Thru-Hull Fitting

Mfr. Perko | Mfr No. 322DP4PLB

Perko, Bronze Thru-Hull Fitting. Flange is machined to fit hull and grooved to retain bedding compound, neck is threaded to approximately 3/8" from flange...
$38.08


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Perko, Garboard Drain Plug, Cast Bronze

Perko, Garboard Drain Plug, Cast Bronze

Mfr. Perko | Mfr No. 363DP0PLB

Perko, Garboard Drain Plug, Cast Bronze...
$91.99


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Perko, Spare Drain Plug

Perko, Spare Drain Plug

Mfr. Perko | Mfr No. 0370DPPLB

Cast bronze Replacement Plug for Perko 363DP0PLB
$50.95
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Perko, Spare Flanged Lock Nut

Perko, Spare Flanged Lock Nut

Mfr. Perko

Perko, Spare Flanged Lock Nut. Molded white plastic...
Sale Price From $2.74

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

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

Mfr. Perko

$2.57 - $10.15

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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...
$7.13 - $7.85

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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

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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...
$6.26
On Sale


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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...
$2.27 - $2.74

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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...
$2.40
On Sale


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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.
$7.93
On Sale


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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...
$3.98
On Sale


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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...
$15.92
On Sale


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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...
$2.71
On Sale


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Sea-Dog, Scupper Valve, Nylon

Sea-Dog, Scupper Valve, Nylon

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

Sea-Dog, Scupper Valve, Nylon...
$2.84
On Sale


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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.
$4.26
On Sale


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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 $3.59

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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 $2.36

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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 $2.14

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Attwood Thru-Hull 90° Elbow Connectors

Attwood Thru-Hull 90° Elbow Connectors

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 $5.71

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Bronze Thru Hull, Flush Type

Bronze Thru Hull, Flush Type

Mfr. Buck Algonquin

Bronze, Flush Type Thru Hull for your boat with machined finish comes complete with flange nut...
$31.49 - $60.52

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Bronze Thru-Hulls

Bronze Thru-Hulls

Mfr. Buck Algonquin

Bronze Thru-Hulls. Machined finished, complete with flange nut....
$18.21 - $145.25

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Bronze Thru Hull, Flush Type, Perforated Screen

Bronze Thru Hull, Flush Type, Perforated Screen

Mfr. Buck Algonquin | Mfr No. 00TH100FS

Bronze Thru Hull, Flush Type, Perforated Screen. Machined finish, complete with flange nut...
$74.85


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Cockpit Scupper, 316 Stainless Steel Top, 3-1/2" OD

Cockpit Scupper, 316 Stainless Steel Top, 3-1/2" OD

Mfr. Buck Algonquin | Mfr No. 00CPS350

Cockpit Scupper, 316 Stainless Steel Top, 3-1/2" OD...
$65.63


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Buck Algonquin Bronze Ball Type Seacocks

Buck Algonquin Bronze Ball Type Seacocks

Mfr. Buck Algonquin

Buck Algonquin Bronze Ball Type Seacocks. Drain plug & grounding screw, full flow, low profile, hard chromed brass ball...
$32.63 - $743.86

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Bronze Thru Hull w/ Nut

Bronze Thru Hull w/ Nut

Mfr. Conbraco

Cast bronze.
$16.90 - $51.42

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Seacock Thru-Hull Valves with 90° Hose Barb

Seacock Thru-Hull Valves with 90° Hose Barb

Mfr. Forespar | Mfr No. 931156

Forespar 93 Series Thru-Hull Seacock Valves with 90° hose barbs are made from durable Marelon and feature full-flow ball valves for top performance on your boat. Valves and thru-hulls...
$156.43
On Sale


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Gem Stainless Steel Thru-Hulls 90-Degree, Barbed

Gem Stainless Steel Thru-Hulls 90-Degree, Barbed

Mfr. Gem Products (Gemlux)

GEM threaded thru-hulls provide the ultimate connection for pipe fittings, ball valves or sea-cocks.
Sale Price From $26.54

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Products: 1 - 50 of 82
Page:  1 | 2   Next >

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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.


 
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