Skip to content

Marine Plumbing & Ventilation - Thru-Hull Fittings

Filters

Perko 12 ThruHull Fitting f Hose Plastic MADE IN THE USA 0328DP4 Save 47% Save %
$7.57
$7.57 - $7.57
$7.57
$3.99
$3.99 - $3.99
$3.99

Perko 1/2" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4]

Only 1 left!

Perko 1/2" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1/2 Mounting Hole Diamete...

View full details
$7.57
$7.57 - $7.57
$7.57
$3.99
$3.99 - $3.99
$3.99
Save 47% Save %
GROCO 112 Slotted Hi Speed ThruHull wNut HSSLTH1500W Save 38% Save %
$149.00
$149.00 - $149.00
$149.00
$92.99
$92.99 - $92.99
$92.99

GROCO 1-1/2" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1500-W]

Only 4 left!

1-1/2" Slotted Hi Speed Thru-Hull with NutFeatures: 1-1/2" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size...

View full details
$149.00
$149.00 - $149.00
$149.00
$92.99
$92.99 - $92.99
$92.99
Save 38% Save %
GROCO 1 Stainless Steel Extra Long ThruHull Fitting wNut THXL1000WS Save 36% Save %
$66.00
$66.00 - $66.00
$66.00
$41.99
$41.99 - $41.99
$41.99

GROCO 1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1000-WS]

in stock

1" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: Mat...

View full details
$66.00
$66.00 - $66.00
$66.00
$41.99
$41.99 - $41.99
$41.99
Save 36% Save %
GROCO 1 NPS NPT Combo Bronze ThruHull Fitting wNut TH1000W Save 35% Save %
$37.00
$37.00 - $37.00
$37.00
$23.99
$23.99 - $23.99
$23.99

GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1000-W]

in stock

1" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Avail...

View full details
$37.00
$37.00 - $37.00
$37.00
$23.99
$23.99 - $23.99
$23.99
Save 35% Save %
GROCO 114 Bronze Combo Scoop ThruHull wNut STH1250W
Save 37% Save %
$97.00
$97.00 - $97.00
$97.00
$60.99
$60.99 - $60.99
$60.99

GROCO 1-1/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-1250-W]

in stock

1-1/4" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C836...

View full details
$97.00
$97.00 - $97.00
$97.00
$60.99
$60.99 - $60.99
$60.99
Save 37% Save %
GROCO 114 Slotted Hi Speed ThruHull wNut HSSLTH1250W
Save 38% Save %
$117.00
$117.00 - $117.00
$117.00
$72.99
$72.99 - $72.99
$72.99

GROCO 1-1/4" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1250-W]

Only 3 left!

1-1/4" Slotted Hi Speed Thru-Hull with NutFeatures: 1-1/4" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size...

View full details
$117.00
$117.00 - $117.00
$117.00
$72.99
$72.99 - $72.99
$72.99
Save 38% Save %
GROCO 34 Bronze Combo Scoop ThruHull wNut STH750W
Save 37% Save %
$49.00
$49.00 - $49.00
$49.00
$30.99
$30.99 - $30.99
$30.99

GROCO 3/4" Bronze Combo Scoop Thru-Hull w/Nut [STH-750-W]

Only 4 left!

3/4" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600...

View full details
$49.00
$49.00 - $49.00
$49.00
$30.99
$30.99 - $30.99
$30.99
Save 37% Save %
GROCO 34 Bronze High Speed ThruHull Fitting wNut HSTH750W
Save 35% Save %
$26.00
$26.00 - $26.00
$26.00
$16.99
$16.99 - $16.99
$16.99

GROCO 3/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-750-W]

in stock

3/4" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT...

View full details
$26.00
$26.00 - $26.00
$26.00
$16.99
$16.99 - $16.99
$16.99
Save 35% Save %
Perko 114 ThruHull Fitting wPipe Thread Bronze MADE IN THE USA 0322DP7PLB
Save 51% Save %
$122.88
$122.88 - $122.88
$122.88
$59.99
$59.99 - $59.99
$59.99

Perko 1-1/4" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP7PLB]

Only 5 left!

Perko 1-1/4" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to app...

View full details
$122.88
$122.88 - $122.88
$122.88
$59.99
$59.99 - $59.99
$59.99
Save 51% Save %
Perko 34 Intake Strainer Bronze MADE IN THE USA 0065DP5PLB
Save 53% Save %
$109.63
$109.63 - $109.63
$109.63
$50.99
$50.99 - $50.99
$50.99

Perko 3/4" Intake Strainer Bronze MADE IN THE USA [0065DP5PLB]

Only 3 left!

Perko 3/4" Intake Strainer BronzeCast bronzeMachined SlotsTechnical Information: Maximum Pipe Size Inches: 3/4 Maximum Hull Thickness Inches: 2-3...

View full details
$109.63
$109.63 - $109.63
$109.63
$50.99
$50.99 - $50.99
$50.99
Save 53% Save %
Perko 112 ThruHull Fitting f Hose Chrome Plated Bronze Made in the USA 0350008DPC
Save 60% Save %
$189.93
$189.93 - $189.93
$189.93
$75.99
$75.99 - $75.99
$75.99

Perko 1-1/2" Thru-Hull Fitting f/ Hose Chrome Plated Bronze Made in the USA [0350008DPC]

Only 4 left!

Perko 1-1/2" Thru-Hull Connection f/ use with Hose Chrome Plated BronzeFlange is machined to fit and grooved to retain bedding compound neck isthr...

View full details
$189.93
$189.93 - $189.93
$189.93
$75.99
$75.99 - $75.99
$75.99
Save 60% Save %
GROCO 34 Slotted Hi Speed ThruHull wNut HSSLTH750W
Save 36% Save %
$47.00
$47.00 - $47.00
$47.00
$29.99
$29.99 - $29.99
$29.99

GROCO 3/4" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-750-W]

Only 4 left!

3/4" Slotted Hi Speed Thru-Hull with NutFeatures: 3/4" NPSM / NPT combination thread C83600 Bronze With Nut Slotted Specifications: Hose Size: 3/...

View full details
$47.00
$47.00 - $47.00
$47.00
$29.99
$29.99 - $29.99
$29.99
Save 36% Save %
Perko 34 ThruHull Fitting wPipe Thread Bronze Extra Long Max Hull 5 Thick 0348DP5PLB
Save 46% Save %
$118.72
$118.72 - $118.72
$118.72
$63.99
$63.99 - $63.99
$63.99

Perko 3/4" Thru-Hull Fitting w/Pipe Thread Bronze Extra Long - Max Hull 5" Thick [0348DP5PLB]

in stock

Extra Long Thru-Hull Connection for Use with PipePart #: 0348DP5PLBFlange is machined to fit the hull and grooved to retain bedding compound neck ...

View full details
$118.72
$118.72 - $118.72
$118.72
$63.99
$63.99 - $63.99
$63.99
Save 46% Save %
GROCO 1 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1000WS
Save 37% Save %
$60.00
$60.00 - $60.00
$60.00
$37.99
$37.99 - $37.99
$37.99

GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]

Only 5 left!

1" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL L...

View full details
$60.00
$60.00 - $60.00
$60.00
$37.99
$37.99 - $37.99
$37.99
Save 37% Save %
GROCO 112 Stainless Steel Extra Long ThruHull Fitting wNut THXL1500WS
Save 37% Save %
$79.00
$79.00 - $79.00
$79.00
$49.99
$49.99 - $49.99
$49.99

GROCO 1-1/2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1500-WS]

in stock

1-1/2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications:...

View full details
$79.00
$79.00 - $79.00
$79.00
$49.99
$49.99 - $49.99
$49.99
Save 37% Save %
GROCO 114 NPS NPT Combo Stainless Steel ThruHull Fitting wNut TH1250WS
Save 37% Save %
$67.00
$67.00 - $67.00
$67.00
$41.99
$41.99 - $41.99
$41.99

GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]

Only 2 left!

1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" ...

View full details
$67.00
$67.00 - $67.00
$67.00
$41.99
$41.99 - $41.99
$41.99
Save 37% Save %
Perko 12 ThruHull Fitting wPipe Thread Bronze MADE IN THE USA 0322DP4PLB
Save 46% Save %
$51.96
$51.96 - $51.96
$51.96
$27.99
$27.99 - $27.99
$27.99

Perko 1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP4PLB]

in stock

Perko 1/2" Thru-Hull Fitting w/ Pipe Thread BronzeFlange is machined to fit hull and grooved to retain bedding compound. Neckis threaded to appro...

View full details
$51.96
$51.96 - $51.96
$51.96
$27.99
$27.99 - $27.99
$27.99
Save 46% Save %
GROCO 112 90 Degree Hose ThruHull Fitting HTHC1500S
Save 38% Save %
$208.00
$208.00 - $208.00
$208.00
$129.99
$129.99 - $129.99
$129.99

GROCO 1-1/2" 90 Degree Hose Thru-Hull Fitting [HTHC-1500-S]

in stock

1-1/2" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specif...

View full details
$208.00
$208.00 - $208.00
$208.00
$129.99
$129.99 - $129.99
$129.99
Save 38% Save %
GROCO 1 Bronze Combo Scoop ThruHull wNut STH1000W
Save 37% Save %
$68.00
$68.00 - $68.00
$68.00
$42.99
$42.99 - $42.99
$42.99

GROCO 1" Bronze Combo Scoop Thru-Hull w/Nut [STH-1000-W]

in stock

1" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 B...

View full details
$68.00
$68.00 - $68.00
$68.00
$42.99
$42.99 - $42.99
$42.99
Save 37% Save %
GROCO 34 90 Degree Hose ThruHull Fitting HTHC750S
Save 37% Save %
$60.00
$60.00 - $60.00
$60.00
$37.99
$37.99 - $37.99
$37.99

GROCO 3/4" 90 Degree Hose Thru-Hull Fitting [HTHC-750-S]

in stock

3/4" 90 Degree Hose Thru-Hull Fitting Features: 90 Degree Barb #316 Stainless Steel Thru Hull with Bronze Hose Connection UL Listed 647B Specific...

View full details
$60.00
$60.00 - $60.00
$60.00
$37.99
$37.99 - $37.99
$37.99
Save 37% Save %
GROCO 2 Bronze Combo Scoop ThruHull wNut STH2000W
Save 38% Save %
$183.00
$183.00 - $183.00
$183.00
$113.99
$113.99 - $113.99
$113.99

GROCO 2" Bronze Combo Scoop Thru-Hull w/Nut [STH-2000-W]

in stock

2" Bronze Combo Scoop Thru-Hull w/Nut Features: Designed for increased flow compared to standard Thru Hulls NPSM / NPT combination thread C83600 B...

View full details
$183.00
$183.00 - $183.00
$183.00
$113.99
$113.99 - $113.99
$113.99
Save 38% Save %
GROCO 3 Bronze ThruHull Fitting wNut TH3000W
Save 38% Save %
$365.00
$365.00 - $365.00
$365.00
$227.99
$227.99 - $227.99
$227.99

GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]

Only 3 left!

3" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 3" GROCO thru-hull fitting than conventional thru-hulls.Features: NPS...

View full details
$365.00
$365.00 - $365.00
$365.00
$227.99
$227.99 - $227.99
$227.99
Save 38% Save %
GROCO 2 Bronze High Speed ThruHull Fitting wNut HSTH2000W
Save 38% Save %
$122.00
$122.00 - $122.00
$122.00
$75.99
$75.99 - $75.99
$75.99

GROCO 2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-2000-W]

Only 2 left!

2" Bronze High Speed Thru-Hull Fitting w/Nut Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT c...

View full details
$122.00
$122.00 - $122.00
$122.00
$75.99
$75.99 - $75.99
$75.99
Save 38% Save %
GROCO Stainless Steel Hose Barb ThruHull Fitting 118 HTH1125S
Save 37% Save %
$43.00
$43.00 - $43.00
$43.00
$26.99
$26.99 - $26.99
$26.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125-S]

in stock

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications...

View full details
$43.00
$43.00 - $43.00
$43.00
$26.99
$26.99 - $26.99
$26.99
Save 37% Save %

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare