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

$
$
Original price $8.06
Original price $8.06 - Original price $8.06
Original price $8.06
Current price $3.99
$3.99 - $3.99
Current price $3.99

Perko 3/4" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP5]

Perko
In stock

Perko 3/4" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 3/4 Mounting Hole Diamete...

View full details
Original price $8.06
Original price $8.06 - Original price $8.06
Original price $8.06
Current price $3.99
$3.99 - $3.99
Current price $3.99
Save $4.07 Save $0.00
Original price $16.19
Original price $16.19 - Original price $16.19
Original price $16.19
Current price $3.99
$3.99 - $3.99
Current price $3.99

Perko 1-1/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6A]

Perko
In stock

Perko 1-⅛" Thru-Hull Fitting f/ Hose Plastic Molded White Plastic Broad FlangeTechnical Information: Hose Size Inches: 1-1/8 Mounting Hole Diame...

View full details
Original price $16.19
Original price $16.19 - Original price $16.19
Original price $16.19
Current price $3.99
$3.99 - $3.99
Current price $3.99
Save $12.20 Save $0.00
Original price $64.00
Original price $64.00 - Original price $64.00
Original price $64.00
Current price $41.99
$41.99 - $41.99
Current price $41.99

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

GROCO
Low 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
Original price $64.00
Original price $64.00 - Original price $64.00
Original price $64.00
Current price $41.99
$41.99 - $41.99
Current price $41.99
Save $22.01 Save $0.00
Original price $55.00
Original price $55.00 - Original price $55.00
Original price $55.00
Current price $35.99
$35.99 - $35.99
Current price $35.99

GROCO 1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1250-W]

GROCO
In stock

1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B A...

View full details
Original price $55.00
Original price $55.00 - Original price $55.00
Original price $55.00
Current price $35.99
$35.99 - $35.99
Current price $35.99
Save $19.01 Save $0.00
Original price $29.74
Original price $29.74 - Original price $29.74
Original price $29.74
Current price $22.99
$22.99 - $22.99
Current price $22.99

Attwood Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner Diameter [66541-3]

Attwood Marine
In stock

Stainless Steel Thru-Hull Short Straight Barbed - 3/4" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why...

View full details
Original price $29.74
Original price $29.74 - Original price $29.74
Original price $29.74
Current price $22.99
$22.99 - $22.99
Current price $22.99
Save $6.75 Save $0.00
Original price $181.75
Original price $181.75 - Original price $181.75
Original price $181.75
Current price $71.99
$71.99 - $71.99
Current price $71.99

Perko 1-1/4" Intake Strainer Bronze MADE IN THE USA [0065DP7PLB]

Perko
In stock

Perko 1-1/4" Intake Strainer BronzeCast bronzeMachined SlotsTechnical Information: Maximum Pipe Size Inches: 1-1/4 Maximum Hull Thickness Inches:...

View full details
Original price $181.75
Original price $181.75 - Original price $181.75
Original price $181.75
Current price $71.99
$71.99 - $71.99
Current price $71.99
Save $109.76 Save $0.00
Original price $35.86
Original price $35.86 - Original price $35.86
Original price $35.86
Current price $17.99
$17.99 - $17.99
Current price $17.99

Perko 3-1/2" x 2-1/2" Scoop Strainer Bronze MADE IN THE USA [0066DP1PLB]

Perko
In stock

Perko 3-1/2" X 2-1/2" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 3/8 & 1/2 Dimensions Str...

View full details
Original price $35.86
Original price $35.86 - Original price $35.86
Original price $35.86
Current price $17.99
$17.99 - $17.99
Current price $17.99
Save $17.87 Save $0.00
Original price $104.00
Original price $104.00 - Original price $104.00
Original price $104.00
Current price $66.99
$66.99 - $66.99
Current price $66.99

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 2" [HTH-2000-S]

GROCO
In stock

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

View full details
Original price $104.00
Original price $104.00 - Original price $104.00
Original price $104.00
Current price $66.99
$66.99 - $66.99
Current price $66.99
Save $37.01 Save $0.00
Original price $107.00
Original price $107.00 - Original price $107.00
Original price $107.00
Current price $68.99
$68.99 - $68.99
Current price $68.99

GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-2000-W]

GROCO
Low stock

2" 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
Original price $107.00
Original price $107.00 - Original price $107.00
Original price $107.00
Current price $68.99
$68.99 - $68.99
Current price $68.99
Save $38.01 Save $0.00
Original price $8.86
Original price $8.86 - Original price $8.86
Original price $8.86
Current price $5.99
$5.99 - $5.99
Current price $5.99

Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]

Perko
In stock

3/4" Thru-Hull Fitting f/Hose - Plastic Narrow FlangeFeatures: Molded white Narrow Flange Specifications: Hose Size: 3/4" Mounting Hole Diameter: ...

View full details
Original price $8.86
Original price $8.86 - Original price $8.86
Original price $8.86
Current price $5.99
$5.99 - $5.99
Current price $5.99
Save $2.87 Save $0.00
Original price $67.77
Original price $67.77 - Original price $67.77
Original price $67.77
Current price $34.99
$34.99 - $34.99
Current price $34.99

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

Perko
Low stock

Perko 3/4" 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
Original price $67.77
Original price $67.77 - Original price $67.77
Original price $67.77
Current price $34.99
$34.99 - $34.99
Current price $34.99
Save $32.78 Save $0.00
Original price $55.00
Original price $55.00 - Original price $55.00
Original price $55.00
Current price $35.99
$35.99 - $35.99
Current price $35.99

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

GROCO
Low 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
Original price $55.00
Original price $55.00 - Original price $55.00
Original price $55.00
Current price $35.99
$35.99 - $35.99
Current price $35.99
Save $19.01 Save $0.00
Original price $33.00
Original price $33.00 - Original price $33.00
Original price $33.00
Current price $21.99
$21.99 - $21.99
Current price $21.99

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

GROCO
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
Original price $33.00
Original price $33.00 - Original price $33.00
Original price $33.00
Current price $21.99
$21.99 - $21.99
Current price $21.99
Save $11.01 Save $0.00
Original price $51.96
Original price $51.96 - Original price $51.96
Original price $51.96
Current price $28.99
$28.99 - $28.99
Current price $28.99

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

Perko
Low 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
Original price $51.96
Original price $51.96 - Original price $51.96
Original price $51.96
Current price $28.99
$28.99 - $28.99
Current price $28.99
Save $22.97 Save $0.00
Original price $16.76
Original price $16.76 - Original price $16.76
Original price $16.76
Current price $10.99
$10.99 - $10.99
Current price $10.99

Perko 1-1/8" Thru-Hull Fitting f/Hose Narrow Flange - Plastic [0301DP6A]

Perko
In stock

1-1/8" Thru-Hull Fitting for Hose Narrow Flange - PlasticFeatures: Molded white Narrow Flange Specifications: Hose Size: 1-1/8" Mounting Hole Di...

View full details
Original price $16.76
Original price $16.76 - Original price $16.76
Original price $16.76
Current price $10.99
$10.99 - $10.99
Current price $10.99
Save $5.77 Save $0.00
Original price $16.19
Original price $16.19 - Original price $16.19
Original price $16.19
Current price $4.99
$4.99 - $4.99
Current price $4.99

Perko 1" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP6]

Perko
In stock

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

View full details
Original price $16.19
Original price $16.19 - Original price $16.19
Original price $16.19
Current price $4.99
$4.99 - $4.99
Current price $4.99
Save $11.20 Save $0.00
Original price $40.00
Original price $40.00 - Original price $40.00
Original price $40.00
Current price $25.99
$25.99 - $25.99
Current price $25.99

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

GROCO
In stock

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

View full details
Original price $40.00
Original price $40.00 - Original price $40.00
Original price $40.00
Current price $25.99
$25.99 - $25.99
Current price $25.99
Save $14.01 Save $0.00
Original price $86.00
Original price $86.00 - Original price $86.00
Original price $86.00
Current price $55.99
$55.99 - $55.99
Current price $55.99

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

GROCO
Low 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
Original price $86.00
Original price $86.00 - Original price $86.00
Original price $86.00
Current price $55.99
$55.99 - $55.99
Current price $55.99
Save $30.01 Save $0.00
Original price $79.00
Original price $79.00 - Original price $79.00
Original price $79.00
Current price $51.99
$51.99 - $51.99
Current price $51.99

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

GROCO
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
Original price $79.00
Original price $79.00 - Original price $79.00
Original price $79.00
Current price $51.99
$51.99 - $51.99
Current price $51.99
Save $27.01 Save $0.00
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $15.99
$15.99 - $15.99
Current price $15.99

Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]

Forespar Performance Products
Low stock

Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifi...

View full details
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $15.99
$15.99 - $15.99
Current price $15.99
Save $4.00 Save $0.00
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $14.99
$14.99 - $14.99
Current price $14.99

Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4" [930002SS]

Forespar Performance Products
Low stock

Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifi...

View full details
Original price $19.99
Original price $19.99 - Original price $19.99
Original price $19.99
Current price $14.99
$14.99 - $14.99
Current price $14.99
Save $5.00 Save $0.00
Original price $61.99
Original price $61.99 - Original price $61.99
Original price $61.99
Current price $45.99
$45.99 - $45.99
Current price $45.99

Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1-1/2" Inner Diameter [66545-3]

Attwood Marine
In stock

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

View full details
Original price $61.99
Original price $61.99 - Original price $61.99
Original price $61.99
Current price $45.99
$45.99 - $45.99
Current price $45.99
Save $16.00 Save $0.00
Original price $21.00
Original price $21.00 - Original price $21.00
Original price $21.00
Current price $13.99
$13.99 - $13.99
Current price $13.99

GROCO Bronze Hose Barb Thru-Hull Fitting - 1/2" [HTH-500]

GROCO
In stock

Bronze Hose Barb Thru-Hull Fitting - 1/2" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1/2" ...

View full details
Original price $21.00
Original price $21.00 - Original price $21.00
Original price $21.00
Current price $13.99
$13.99 - $13.99
Current price $13.99
Save $7.01 Save $0.00
Original price $22.00
Original price $22.00 - Original price $22.00
Original price $22.00
Current price $14.99
$14.99 - $14.99
Current price $14.99

GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]

GROCO
Low stock

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

View full details
Original price $22.00
Original price $22.00 - Original price $22.00
Original price $22.00
Current price $14.99
$14.99 - $14.99
Current price $14.99
Save $7.01 Save $0.00

Compare products

0 of 3 items selected

Select first item to compare

Select second item to compare

Select third item to compare

Compare