Skip to content
Free shipping on U.S. domestic orders of $89.99 or more! Standard flat-rate shipping of $9.95 (USPS). **exclusions apply**
Free shipping on U.S. domestic orders of $89.99 or more! Standard flat-rate shipping of $9.95 (USPS). **exclusions apply**

Marine Plumbing & Ventilation - Thru-Hull Fittings

Filters

$
$
Save $13.77 Save $0.00
$21.76
$21.76 - $21.76
$21.76
$7.99
$7.99 - $7.99
$7.99

Perko 1-1/2" Thru-Hull Fitting f/Hose Plastic MADE IN THE USA [0328DP8]

Perko
In stock

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

View full details
$21.76
$21.76 - $21.76
$21.76
$7.99
$7.99 - $7.99
$7.99
Save $13.77 Save $0.00
Save $14.10 Save $0.00
$60.09
$60.09 - $60.09
$60.09
$45.99
$45.99 - $45.99
$45.99

Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]

Perko
In stock

Thru-Hull Scupper for Mounting Through TransomFeatures: Molded White Polymer Soft Black Flapper Nut and Mounting Hardware Included Specifications:...

View full details
$60.09
$60.09 - $60.09
$60.09
$45.99
$45.99 - $45.99
$45.99
Save $14.10 Save $0.00
Save $18.01 Save $0.00
$59.00
$59.00 - $59.00
$59.00
$40.99
$40.99 - $40.99
$40.99

GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-750-WS]

GROCO
In stock

3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications: H...

View full details
$59.00
$59.00 - $59.00
$59.00
$40.99
$40.99 - $40.99
$40.99
Save $18.01 Save $0.00
Save $12.01 Save $0.00
$42.00
$42.00 - $42.00
$42.00
$29.99
$29.99 - $29.99
$29.99

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

GROCO
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
$42.00
$42.00 - $42.00
$42.00
$29.99
$29.99 - $29.99
$29.99
Save $12.01 Save $0.00
Save $1.00 Save $0.00
$9.99
$9.99 - $9.99
$9.99
$8.99
$8.99 - $8.99
$8.99

Attwood White Plastic Thru-Hull Fitting - 1-1/8" Inner Diameter [3874-3]

Attwood Marine
Low stock

White Plastic Thru-Hull Fitting - 1-1/8" Inner DiameterThis thru-hull fitting is made with a durable, thermoplastic construction, which prevents e...

View full details
$9.99
$9.99 - $9.99
$9.99
$8.99
$8.99 - $8.99
$8.99
Save $1.00 Save $0.00
Save $9.29 Save $0.00
$42.28
$42.28 - $42.28
$42.28
$32.99
$32.99 - $32.99
$32.99

Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner Diameter [66549-3]

Attwood Marine
In stock

Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings...

View full details
$42.28
$42.28 - $42.28
$42.28
$32.99
$32.99 - $32.99
$32.99
Save $9.29 Save $0.00
Save $10.01 Save $0.00
$34.00
$34.00 - $34.00
$34.00
$23.99
$23.99 - $23.99
$23.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" [HTH-750-S]

GROCO
In stock

Stainless Steel Hose Barb Thru-Hull Fitting - 3/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications: ...

View full details
$34.00
$34.00 - $34.00
$34.00
$23.99
$23.99 - $23.99
$23.99
Save $10.01 Save $0.00
Save $14.01 Save $0.00
$49.00
$49.00 - $49.00
$49.00
$34.99
$34.99 - $34.99
$34.99

GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125]

GROCO
In stock

Bronze Hose Barb Thru-Hull Fitting - 1-1/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1...

View full details
$49.00
$49.00 - $49.00
$49.00
$34.99
$34.99 - $34.99
$34.99
Save $14.01 Save $0.00
Save $32.01 Save $0.00
$102.00
$102.00 - $102.00
$102.00
$69.99
$69.99 - $69.99
$69.99

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

GROCO
Low stock

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
$102.00
$102.00 - $102.00
$102.00
$69.99
$69.99 - $69.99
$69.99
Save $32.01 Save $0.00
Save $35.47 Save $0.00
$62.46
$62.46 - $62.46
$62.46
$26.99
$26.99 - $26.99
$26.99

Perko 5/8" Thru-Hull Fitting f/ Hose Bronze MADE IN THE USA [0350004DPP]

Perko
Low stock

Perko 5/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck isthreaded to approxi...

View full details
$62.46
$62.46 - $62.46
$62.46
$26.99
$26.99 - $26.99
$26.99
Save $35.47 Save $0.00
Save $38.68 Save $0.00
$82.67
$82.67 - $82.67
$82.67
$43.99
$43.99 - $43.99
$43.99

Perko 3/4" Thru-Hull Fitting f/ Hose Chrome Plated Bronze MADE IN THE USA [0350005DPC]

Perko
Low stock

Perko 3/4" Thru-Hull Connection f/ use with Hose Chrome PlatedBronzeFlange is machined to fit and grooved to retain bedding compound neck isthread...

View full details
$82.67
$82.67 - $82.67
$82.67
$43.99
$43.99 - $43.99
$43.99
Save $38.68 Save $0.00
Save $37.09 Save $0.00
$88.08
$88.08 - $88.08
$88.08
$50.99
$50.99 - $50.99
$50.99

Perko 1-1/8" Thru-Hull Fitting f/ Hose Bronze Made in the USA [035006ADPP]

Perko
Low stock

Perko 1-1/8" Thru-Hull Connection f/ use with Hose BronzeFlange is machined to fit and grooved to retain bedding compound neck is threaded to appr...

View full details
$88.08
$88.08 - $88.08
$88.08
$50.99
$50.99 - $50.99
$50.99
Save $37.09 Save $0.00
Save $20.01 Save $0.00
$67.00
$67.00 - $67.00
$67.00
$46.99
$46.99 - $46.99
$46.99

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

GROCO
In stock

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
$46.99
$46.99 - $46.99
$46.99
Save $20.01 Save $0.00
Save $43.57 Save $0.00
$87.56
$87.56 - $87.56
$87.56
$43.99
$43.99 - $43.99
$43.99

Perko 1" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP6PLB]

Perko
In stock

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

View full details
$87.56
$87.56 - $87.56
$87.56
$43.99
$43.99 - $43.99
$43.99
Save $43.57 Save $0.00
Save $88.42 Save $0.00
$164.41
$164.41 - $164.41
$164.41
$75.99
$75.99 - $75.99
$75.99

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

Perko
In stock

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

View full details
$164.41
$164.41 - $164.41
$164.41
$75.99
$75.99 - $75.99
$75.99
Save $88.42 Save $0.00
Save $8.01 Save $0.00
$27.00
$27.00 - $27.00
$27.00
$18.99
$18.99 - $18.99
$18.99

GROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]

GROCO
In stock

Bronze Hose Barb Thru-Hull Fitting - 5/8" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 5/8" ...

View full details
$27.00
$27.00 - $27.00
$27.00
$18.99
$18.99 - $18.99
$18.99
Save $8.01 Save $0.00
Save $1.00 Save $0.00
$9.99
$9.99 - $9.99
$9.99
$8.99
$8.99 - $8.99
$8.99

Attwood White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter [3877-3]

Attwood Marine
In stock

White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drain...

View full details
$9.99
$9.99 - $9.99
$9.99
$8.99
$8.99 - $8.99
$8.99
Save $1.00 Save $0.00
Save $13.57 Save $0.00
$61.56
$61.56 - $61.56
$61.56
$47.99
$47.99 - $47.99
$47.99

Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter [66551-3]

Attwood Marine
Low stock

Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings...

View full details
$61.56
$61.56 - $61.56
$61.56
$47.99
$47.99 - $47.99
$47.99
Save $13.57 Save $0.00
Save $20.01 Save $0.00
$68.00
$68.00 - $68.00
$68.00
$47.99
$47.99 - $47.99
$47.99

GROCO 1" 90 Degree Hose Thru-Hull Fitting [HTHC-1000-S]

GROCO
Low stock

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

View full details
$68.00
$68.00 - $68.00
$68.00
$47.99
$47.99 - $47.99
$47.99
Save $20.01 Save $0.00
Save $21.01 Save $0.00
$69.00
$69.00 - $69.00
$69.00
$47.99
$47.99 - $47.99
$47.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250-S]

GROCO
In stock

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/4" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications...

View full details
$69.00
$69.00 - $69.00
$69.00
$47.99
$47.99 - $47.99
$47.99
Save $21.01 Save $0.00
Save $12.01 Save $0.00
$41.00
$41.00 - $41.00
$41.00
$28.99
$28.99 - $28.99
$28.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1" [HTH-1000-S]

GROCO
In stock

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

View full details
$41.00
$41.00 - $41.00
$41.00
$28.99
$28.99 - $28.99
$28.99
Save $12.01 Save $0.00
Save $23.01 Save $0.00
$78.00
$78.00 - $78.00
$78.00
$54.99
$54.99 - $54.99
$54.99

GROCO 1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-1250-WS]

GROCO
Low stock

1-1/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread #316 Stainless Steel Specifications:...

View full details
$78.00
$78.00 - $78.00
$78.00
$54.99
$54.99 - $54.99
$54.99
Save $23.01 Save $0.00
Save $25.01 Save $0.00
$84.00
$84.00 - $84.00
$84.00
$58.99
$58.99 - $58.99
$58.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500-S]

GROCO
In stock

Stainless Steel Hose Barb Thru-Hull Fitting - 1-1/2" Features: NPS Thread With Hose Connection #316 Stainless Steel UL Listed 647B Specifications...

View full details
$84.00
$84.00 - $84.00
$84.00
$58.99
$58.99 - $58.99
$58.99
Save $25.01 Save $0.00
Save $13.01 Save $0.00
$44.00
$44.00 - $44.00
$44.00
$30.99
$30.99 - $30.99
$30.99

GROCO Bronze Hose Barb Thru-Hull Fitting - 1" [HTH-1000]

GROCO
In stock

Bronze Hose Barb Thru-Hull Fitting - 1" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1" Mate...

View full details
$44.00
$44.00 - $44.00
$44.00
$30.99
$30.99 - $30.99
$30.99
Save $13.01 Save $0.00

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