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Welcome to First Stop Marine, Your one stop shop for all of your boating needs and more!

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Collection: Marine Plumbing & Ventilation - Thru-Hull Fittings

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1st Class Eligible (37 products)
Brand_Attwood Marine (12 products)
Brand_Forespar Performance Products (3 products)
Brand_GROCO (53 products)
Brand_Perko (30 products)
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Marine Plumbing & Ventilation (98 products)
Marine Plumbing & Ventilation | Thru-Hull Fittings (98 products)
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98 products

Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]

Sale

Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]

Vendor:
Attwood Marine

Regular price $29.99 USD

Regular price ~~$35.42 USD~~ Sale price $29.99 USD
Unit price per

Sale
Perko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]

Sale

Perko 8" x 5-1/8" Scoop Strainer Bronze MADE IN THE USA [0066DP4PLB]

Vendor:
Perko

Regular price $71.99 USD

Regular price ~~$114.05 USD~~ Sale price $71.99 USD
Unit price per

Sale
GROCO 2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-2000-WS]

Sale

GROCO 2" Stainless Steel Extra Long Thru-Hull Fitting w/Nut [THXL-2000-WS]

Vendor:
GROCO

Regular price $64.99 USD

Regular price ~~$86.00 USD~~ Sale price $64.99 USD
Unit price per

Sale
GROCO 1" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1000-W]

Sale

GROCO 1" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1000-W]

Vendor:
GROCO

Regular price $26.99 USD

Regular price ~~$35.00 USD~~ Sale price $26.99 USD
Unit price per

Sale
GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-2000-WS]

Sale

GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-2000-WS]

Vendor:
GROCO

Regular price $70.99 USD

Regular price ~~$94.00 USD~~ Sale price $70.99 USD
Unit price per

Sale
GROCO 1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1250-W]

Sale

GROCO 1-1/4" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1250-W]

Vendor:
GROCO

Regular price $46.99 USD

Regular price ~~$62.00 USD~~ Sale price $46.99 USD
Unit price per

Sale
GROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1500-W]

Sale

GROCO 1-1/2" Bronze High Speed Thru-Hull Fitting w/Nut [HSTH-1500-W]

Vendor:
GROCO

Regular price $67.99 USD

Regular price ~~$90.00 USD~~ Sale price $67.99 USD
Unit price per

Sale
GROCO 3/4" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-750-W]

Sale

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

Vendor:
GROCO

Regular price $30.99 USD

Regular price ~~$41.00 USD~~ Sale price $30.99 USD
Unit price per

Sale
Perko 5/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4A]

Sale

Perko 5/8" Thru-Hull Fitting f/ Hose Plastic MADE IN THE USA [0328DP4A]

Vendor:
Perko

Regular price $6.99 USD

Regular price ~~$17.57 USD~~ Sale price $6.99 USD
Unit price per

Sale
GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]

Sale

GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]

Vendor:
GROCO

Regular price $15.99 USD

Regular price ~~$21.00 USD~~ Sale price $15.99 USD
Unit price per

Sale
Attwood Stainless Steel Scupper Valve Barbed - 1-1/2" Hose Size [66553-3]

Sale

Attwood Stainless Steel Scupper Valve Barbed - 1-1/2" Hose Size [66553-3]

Vendor:
Attwood Marine

Regular price $85.99 USD

Regular price ~~$102.83 USD~~ Sale price $85.99 USD
Unit price per

Sale
GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting [HTHC-1250-S]

Sale

GROCO 1-1/4" 90 Degree Hose Thru-Hull Fitting [HTHC-1250-S]

Vendor:
GROCO

Regular price $80.99 USD

Regular price ~~$104.00 USD~~ Sale price $80.99 USD
Unit price per

Sale
GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]

Sale

GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/2" [HTH-1500]

Vendor:
GROCO

Regular price $54.99 USD

Regular price ~~$73.00 USD~~ Sale price $54.99 USD
Unit price per

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

Sale

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

Vendor:
Perko

Regular price $7.99 USD

Regular price ~~$21.76 USD~~ Sale price $7.99 USD
Unit price per

Sale
Perko 3/4" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP5PLB]

Sale

Perko 3/4" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP5PLB]

Vendor:
Perko

Regular price $33.99 USD

Regular price ~~$66.76 USD~~ Sale price $33.99 USD
Unit price per

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

Sale

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

Vendor:
Perko

Regular price $42.99 USD

Regular price ~~$60.09 USD~~ Sale price $42.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $44.99 USD

Regular price ~~$59.00 USD~~ Sale price $44.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $31.99 USD

Regular price ~~$42.00 USD~~ Sale price $31.99 USD
Unit price per

Sale
GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1000-W]

Sale

GROCO 1" Bronze Extra Long Thru-Hull Fitting w/Nut [THXL-1000-W]

Vendor:
GROCO

Regular price $38.99 USD

Regular price ~~$52.00 USD~~ Sale price $38.99 USD
Unit price per

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

Sale

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

Vendor:
Attwood Marine

Regular price $8.99 USD

Regular price ~~$9.99 USD~~ Sale price $8.99 USD
Unit price per

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

Sale

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

Vendor:
Attwood Marine

Regular price $35.99 USD

Regular price ~~$42.28 USD~~ Sale price $35.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $25.99 USD

Regular price ~~$34.00 USD~~ Sale price $25.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $36.99 USD

Regular price ~~$49.00 USD~~ Sale price $36.99 USD
Unit price per

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

Sale

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

Vendor:
GROCO

Regular price $76.99 USD

Regular price ~~$102.00 USD~~ Sale price $76.99 USD
Unit price per

Sale

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