Thru-Hulls & Seacocks

Made from high strength glass-reinforced Marelon. Ideal for use above or below the waterline. Must be installed with proper bedding compound. Recommend a maximum torque setting of 20 lb/ft. Part #:108... More Details

Made from high strength glass-reinforced Marelon. Ideal for use above or below the waterline. Must be installed with proper bedding compound. Recommend a maximum torque setting of 20 lb/ft. Part #:108... More Details

Made from high strength glass-reinforced Marelon. Ideal for use above or below the waterline. Must be installed with proper bedding compound. Recommend a maximum torque setting of 20 lb/ft. Part #:108... More Details

Made from high strength glass-reinforced Marelon. Ideal for use above or below the waterline. Must be installed with proper bedding compound. Recommend a maximum torque setting of 20 lb/ft. Part #:108... More Details

Made from high strength glass-reinforced Marelon. Ideal for use above or below the waterline. Must be installed with proper bedding compound. Recommend a maximum torque setting of 20 lb/ft. Part #:108... More Details

Cast bronze strainer includes a fresh water port and a smooth, low-torque ball valve so you can switch from straining raw water to flushing with fresh water instantly. Can be used for inboard engines ... More Details

#316 Stainless strainer screen for fresh and saltwater use. Strainer snap-in feature provides a positive vibration proof lock, yet can easily be removed for cleaning. Part #:81-MPA018Manufacturer:FLOW... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

From fresh water to salt water, Flow-Rite has the marine plumbing system you need. The revolutionary Qwik-Lok™ quick-connect plumbing system replaces leak-prone barb fittings. Designed and engineered ... More Details

Positive sealing ball scupper. Seal slotted to fit over 1-1/4" motorwell hole. Variations More Details

Fine 40 mesh stainless steel filter screen prevents breakdowns from particles in the water. Transparent housing for instant inspections. Screw off top allows quick cleaning and debris removal. Part #:... More Details

Molded white plastic with soft black flapper valve Uses #6 fasteners (Not included) Part #:114-02030810Manufacturer:MOELLERManufacturer Part #:020308-10UPC:739729014271Order In Multiples Of:1Size2-7/8... More Details

Thru-hull scupper with nut is used for mounting through the transom. Extra long length allows mounting on 2-1/8" thick surface, for use with 1-1/2" hose. Flange diameter 2-7/8"; white. Soft black flap... More Details

Molded white plastic. Flush mount. For use when discharge is above waterline. Insert prevents passage of large objects without restricting water flow. Flange: 2-3/4" OD; 1-1/2" ID. Part #:9-0285DPManu... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665403Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665463Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665413Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665473Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665423Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665483Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665433Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665493Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665443Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665503Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665453Ma... More Details

Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Part #:23-665513Ma... More Details

The popular 3876 scupper mounted to a 3875B 1-1/2" thru-hull as a complete assembly. Made of high-impact corrosion resistant white plastic with flapper valve that opens outward to dump water overboard... More Details

Mounts on transom slightly above water line to provide a water exit for boats with self-bailing cockpits. Flapper valve opens outward to allow water out of boat when necessary but seals back to preven... More Details

A cetal plastic durable strainer to prevent debris from clogging baitwell drains and aerator pumps. Part #:23-38853Manufacturer:ATTWOOD MARINEManufacturer Part #:3885-3UPC:022697388537Order In Multipl... More Details

Thru-hull connector with strainer prevents clogging of the aerator pump. Strainer attaches to threads that extend beyond external retaining nut. Acetal construction.Note: Do not use strainer as a thru... More Details

Variations More Details

High quality UV and chemical resistant virgin polypropelene. Features a finished head and a single pass around nut. Part #:232-TH1592BManufacturer:T-H MARINEManufacturer Part #:TH1592BUPC:733572031317... More Details

Threaded thru-hull for use with 1-1/8" screw-in overflow drain tube. Part #:232-TH1290TManufacturer:T-H MARINEManufacturer Part #:TH1290TUPC:733572030655Order In Multiples Of:1DescriptionThreaded Fitt... More Details

Threaded thru-hull for use with 1-1/8" screw-in overflow drain tube. Part #:232-TH1890TManufacturer:T-H MARINEManufacturer Part #:TH1890TUPC:733572117790Order In Multiples Of:1DescriptionThreaded Fitt... More Details

Cast bronze. Screw size is #8. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0086006PLBManufacturer:PERKOManufacturer Part #:0086006PLBUPC:085226038716Order In Multiples Of:1Size6" ODMa... More Details

Molded plastic with broad flange. Per ABYC "Safety Standards for Small Craft". Not recommended for use below the waterline. Part #:50-18031Manufacturer:SEACHOICEManufacturer Part #:50-18031UPC:7192491... More Details

Molded plastic with broad flange. Per ABYC "Safety Standards for Small Craft". Not recommended for use below the waterline. Part #:50-18030Manufacturer:SEACHOICEManufacturer Part #:18030UPC:7192491803... More Details

Available in plain or chrome plated bronze, these fittings have a hose barb connection and are recommended for use above the waterline only. The flange is machined to fit the hull tightly and grooved ... More Details

Available in plain or chrome plated bronze, these fittings have a hose barb connection and are recommended for use above the waterline only. The flange is machined to fit the hull tightly and grooved ... More Details

Molded white plastic with broad flange. For use with hose. Not recommended for use below waterline. Part #:9-0328DP4AManufacturer:PERKOManufacturer Part #:0328DP4AUPC:085226034350Order In Multiples Of... More Details

Cast bronze. Part #:379-00SR500Manufacturer:BUCK ALGONQUINManufacturer Part #:00SR500UPC:616316634602Order In Multiples Of:1Size5" dia.Max Thru-Hull1-1/2"Max Thru Hull1-1/2"Maximum Thru Hull1-1/2" Var... More Details

Cast bronze. Screw size is #8. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0086DP5PLBManufacturer:PERKOManufacturer Part #:0086DP5PLBUPC:085226337529Order In Multiples Of:1Size5" ODMa... More Details

Cast bronze. Part #:379-00SR400Manufacturer:BUCK ALGONQUINManufacturer Part #:00SR400UPC:616316634596Order In Multiples Of:1Size4" dia.Max Thru-Hull1"Max Thru Hull1"Maximum Thru Hull1" Variations379-0... More Details

Cast bronze. Screw size is #8. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0086DP4PLBManufacturer:PERKOManufacturer Part #:0086DP4PLBUPC:085226337512Order In Multiples Of:1Size4" ODMa... More Details

Part #:383-1200326Manufacturer:CENTEKManufacturer Part #:1200326UPC:808880120487Order In Multiples Of:1ColorWhiteHose4"Length7-3/4"Hose Fitting Size4" Variations383-12002983" Exhaust Thru-Hull, White ... More Details

Part #:383-1200325Manufacturer:CENTEKManufacturer Part #:1200325UPC:808880120494Order In Multiples Of:1ColorBlackHose4"Length7-3/4"Hose Fitting Size4" Variations383-12002983" Exhaust Thru-Hull, White ... More Details

Part #:9-049300799DManufacturer:PERKOManufacturer Part #:049300799DUPC:085226173509Order In Multiples Of:1DescriptionBasket StrainerFits#7 StrainerFits with#7 Strainer Variations9-0493DP599MSpare Gask... More Details

Part #:9-049300599DManufacturer:PERKOManufacturer Part #:049300599DUPC:085226171116Order In Multiples Of:1DescriptionBasket StrainerFits#5 StrainerFits with#5 Strainer Variations9-0493DP599MSpare Gask... More Details

Part #:9-049300999DManufacturer:PERKOManufacturer Part #:049300999DUPC:085226175909Order In Multiples Of:1DescriptionBasket StrainerFits#9 StrainerFits with#9 Strainer Variations9-0493DP599MSpare Gask... More Details

Part #:9-049300899DManufacturer:PERKOManufacturer Part #:049300899DUPC:085226174759Order In Multiples Of:1DescriptionBasket StrainerFits#8 StrainerFits with#8 Strainer Variations9-0493DP599MSpare Gask... More Details

Part #:9-049300699DManufacturer:PERKOManufacturer Part #:049300699DUPC:085226172366Order In Multiples Of:1DescriptionBasket StrainerFits#6 StrainerFits with#6 Strainer Variations9-0493DP599MSpare Gask... More Details

Part #:9-049300499DManufacturer:PERKOManufacturer Part #:049300499DUPC:085226169984Order In Multiples Of:1DescriptionBasket StrainerFits#4 StrainerFits with#4 Strainer Variations9-0493DP599MSpare Gask... More Details

Molded plastic with broad flange. Per ABYC "Safety Standards for Small Craft". Not recommended for use below the waterline. Part #:50-18050Manufacturer:SEACHOICEManufacturer Part #:18050UPC:7192491805... More Details

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. Inclu... More Details

Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:34-STH75WManufacturer:GROCOManufacturer Part #:STH-75-WUPC:742985173002Order In Multiples Of:1ThreadG 3/4"A2.20"B1.05"C4.00"D3.05"... More Details

Cast bronze. Screw size is #8. Strainer is 3" x 4", except for 65DP7PLB which is 3-1/4" x 4-1/4". Includes nut. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0065DP5PLBManufacturer:PERK... More Details

Keeps debris from clogging pump. Runs clearer, longer with less repairs. Clear plastic housing for quick inspection. One screw disassembly and easy cleaning of 1/16" mesh stainless steel screen. Recom... More Details

Cast bronze. Designed for easy installation and cleaning. Features mounting lugs cast into both sides to assure universal mounting, four outside tie rods and a 316 stainless steel strainer basket to m... More Details

Includes: thru-hull, hose adapter, drain plug, four pre-drilled mounting holes and bonding screw. Incorporates a plastic ball and seat assuring a tight seal and ease of operation and drain plugs for w... More Details

Includes: thru-hull, hose adapter, drain plug, four pre-drilled mounting holes and bonding screw. Incorporates a plastic ball and seat assuring a tight seal and ease of operation and drain plugs for w... More Details

Ball valve design. Cast bronze. Meets needs of applications that require long, scoop or flush type thru-hulls. Part #:9-0805005PLBManufacturer:PERKOManufacturer Part #:0805005PLBUPC:085226237881Order ... More Details

Cast bronze w/nut. Part #:379-00IS75Manufacturer:BUCK ALGONQUINManufacturer Part #:00IS75UPC:616316634800Order In Multiples Of:1Pipe3/4" x 2-1/2"Stem2-1/2"Base2-3/4" x 3-3/4"Flange2-3/4" x 3-3/4" Vari... More Details

Molded plastic with broad flange. Per ABYC "Safety Standards for Small Craft". Not recommended for use below the waterline. Part #:50-18151Manufacturer:SEACHOICEManufacturer Part #:50-18151UPC:7192491... More Details

Available in plain or chrome plated bronze, these fittings have a hose barb connection and are recommended for use above the waterline only. The flange is machined to fit the hull tightly and grooved ... More Details

Available in plain or chrome plated bronze, these fittings have a hose barb connection and are recommended for use above the waterline only. The flange is machined to fit the hull tightly and grooved ... More Details

Molded white plastic with broad flange. For use with hose. Not recommended for use below waterline. Part #:9-0328DP5Manufacturer:PERKOManufacturer Part #:0328DP5UPC:085226034138Order In Multiples Of:1... More Details

Part #:34-HSSLTH750WManufacturer:GROCOManufacturer Part #:HSSLTH-750-WUPC:742985195523Order In Multiples Of:1A2.2B0.3C1.9Thread Size3/4" Variations34-HSSLTH1000W1 SLOT HI SPEED THRU HULL BRZ BRONZE TH... More Details

Cast bronze. Screw size is #8. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0086DP2PLBManufacturer:PERKOManufacturer Part #:0086DP2PLBUPC:085226032677Order In Multiples Of:1Size3" ODMa... More Details

Part #:383-1200298Manufacturer:CENTEKManufacturer Part #:1200298UPC:808880120463Order In Multiples Of:1ColorWhiteHose3"Length5-1/2"Hose Fitting Size3" Variations383-12002993" Exhaust Thru-Hull, Black ... More Details

Part #:383-1200299Manufacturer:CENTEKManufacturer Part #:1200299UPC:808880120470Order In Multiples Of:1ColorBlackHose3"Length5-1/2"Hose Fitting Size3" Variations383-12002983" Exhaust Thru-Hull, White ... More Details

Cast bronze. Part #:379-00SR350Manufacturer:BUCK ALGONQUINManufacturer Part #:00SR350UPC:616316634589Order In Multiples Of:1Size3-1/2" Dia.Max Thru-Hull3/4"Max Thru Hull3/4"Maximum Thru Hull3/4" Varia... More Details

Cast bronze. Screw size is #8. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0086DP3PLBManufacturer:PERKOManufacturer Part #:0086DP3PLBUPC:085226337505Order In Multiples Of:1Size3-1/2" ... More Details

Variations More Details

Dual frequency (50/200kHz) transducer is specially designed to provide a vertical beam without a fairing block. Inside the housing, the ceramic element is tilted to provide built-in deadrise compensat... More Details

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. Inclu... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Cast bronze. Designed for easy installation and cleaning. Features mounting lugs cast into both sides to assure universal mounting, four outside tie rods and a 316 stainless steel strainer basket to m... More Details

Part #:383-1200300Manufacturer:CENTEKManufacturer Part #:1200300UPC:808880120449Order In Multiples Of:1ColorWhiteHose2"Length4-1/2"Hose Fitting Size2" Variations383-12002983" Exhaust Thru-Hull, White ... More Details

Part #:383-1200301Manufacturer:CENTEKManufacturer Part #:1200301UPC:808880120456Order In Multiples Of:1ColorBlackHose2"Length4-1/2"Hose Fitting Size2" Variations383-12002983" Exhaust Thru-Hull, White ... More Details

Ball valve design. Cast bronze. Meets needs of applications that require long, scoop or flush type thru-hulls. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0805009PLBManufacturer:PERKOManufacture... More Details

Cast bronze. Designed for easy installation and cleaning. Features mounting lugs cast into both sides to assure universal mounting, four outside tie rods and a 316 stainless steel strainer basket to m... More Details

Variations More Details

Part #:34-HSSLTH2000WManufacturer:GROCOManufacturer Part #:HSSLTH-2000-WUPC:742985194335Order In Multiples Of:1A3.9B0.3C3.33Thread Size2" Variations34-HSSLTH1000W1 SLOT HI SPEED THRU HULL BRZ BRONZE T... More Details

Variations More Details

Dual frequency (50/200kHz) transducer is specially designed to provide a vertical beam without a fairing block. Inside the housing, the ceramic element is tilted to provide built-in deadrise compensat... More Details

Molded plastic with broad flange. Per ABYC "Safety Standards for Small Craft". Not recommended for use below the waterline. Part #:50-18011Manufacturer:SEACHOICEManufacturer Part #:50-18011UPC:7192491... More Details

Cast bronze. Screw size is #8. Strainer is 3" x 4", except for 65DP7PLB which is 3-1/4" x 4-1/4". Includes nut. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0065DP4PLBManufacturer:PERK... More Details

Cast bronze. Designed for easy installation and cleaning. Features mounting lugs cast into both sides to assure universal mounting, four outside tie rods and a 316 stainless steel strainer basket to m... More Details

Variations More Details

Molded white plastic with broad flange. For use with hose. Not recommended for use below waterline. Part #:9-0328DP4Manufacturer:PERKOManufacturer Part #:0328DP4UPC:085226034121Order In Multiples Of:1... More Details

Includes: thru-hull, hose adapter, drain plug, four pre-drilled mounting holes and bonding screw. Incorporates a plastic ball and seat assuring a tight seal and ease of operation and drain plugs for w... More Details

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. Inclu... More Details

Standard single strainers. No tie rods or leaks under pressure or vacuum. Quick and easy mounting system allowing removal of strainer without tools. #304 Stainless steel filter basket. O-ring seals at... More Details

Includes locking nut. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:34-STH100WManufacturer:GROCOManufacturer Part #:STH-100-WUPC:742985173279Order In Multiples Of:1ThreadG 1"A2.85"B1.05"C4.00"D3.05"... More Details

Cast bronze. Screw size is #8. Strainer is 3" x 4", except for 65DP7PLB which is 3-1/4" x 4-1/4". Includes nut. UL Listed. NOT TO BE USED IN POTABLE WATER SYSTEMS. Part #:9-0065DP6PLBManufacturer:PERK... More Details

Cast bronze. Designed for easy installation and cleaning. Features mounting lugs cast into both sides to assure universal mounting, four outside tie rods and a 316 stainless steel strainer basket to m... More Details