Skip to content
Neptunian Marine
Neptunian Marine

Marine Plumbing & Ventilation - Thru-Hull Fittings

Filters

$
$
Save $6.01 Save $0.00

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

GROCO
$39.00
$39.00 - $39.00
$39.00
$32.99
$32.99 - $32.99
$32.99
In stock

3/4" Bronze Extra Long Thru-Hull Fitting w/Nut Features: Extra long NPSM / NPT combination thread C83600 Bronze Specifications: Hose Size: 3/4" M...

View full details
$39.00
$39.00 - $39.00
$39.00
$32.99
$32.99 - $32.99
$32.99
Save $6.01 Save $0.00
Save $9.01 Save $0.00

GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/4" [HTH-1250]

GROCO
$56.00
$56.00 - $56.00
$56.00
$46.99
$46.99 - $46.99
$46.99
In stock

Bronze Hose Barb Thru-Hull Fitting - 1-1/4" Features: NPS Thread With Hose Connection C83600 Bronze UL Listed 647B Specifications: Hose Size: 1-1...

View full details
$56.00
$56.00 - $56.00
$56.00
$46.99
$46.99 - $46.99
$46.99
Save $9.01 Save $0.00
Save $11.01 Save $0.00

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

GROCO
$69.00
$69.00 - $69.00
$69.00
$57.99
$57.99 - $57.99
$57.99
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
$57.99
$57.99 - $57.99
$57.99
Save $11.01 Save $0.00
Save $21.01 Save $0.00

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

GROCO
$84.00
$84.00 - $84.00
$84.00
$62.99
$62.99 - $62.99
$62.99
Low stock

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

View full details
$84.00
$84.00 - $84.00
$84.00
$62.99
$62.99 - $62.99
$62.99
Save $21.01 Save $0.00
Save $6.01 Save $0.00

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

GROCO
$41.00
$41.00 - $41.00
$41.00
$34.99
$34.99 - $34.99
$34.99
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
$34.99
$34.99 - $34.99
$34.99
Save $6.01 Save $0.00
Save $19.01 Save $0.00

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

GROCO
$76.00
$76.00 - $76.00
$76.00
$56.99
$56.99 - $56.99
$56.99
In 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
$76.00
$76.00 - $76.00
$76.00
$56.99
$56.99 - $56.99
$56.99
Save $19.01 Save $0.00
Save $21.01 Save $0.00

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

GROCO
$84.00
$84.00 - $84.00
$84.00
$62.99
$62.99 - $62.99
$62.99
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
$62.99
$62.99 - $62.99
$62.99
Save $21.01 Save $0.00
Save $7.01 Save $0.00

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

GROCO
$42.00
$42.00 - $42.00
$42.00
$34.99
$34.99 - $34.99
$34.99
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
$42.00
$42.00 - $42.00
$42.00
$34.99
$34.99 - $34.99
$34.99
Save $7.01 Save $0.00
Save $6.01 Save $0.00

GROCO Stainless Steel Hose Barb Thru-Hull Fitting - 1/2" [HTH-500-S]

GROCO
$39.00
$39.00 - $39.00
$39.00
$32.99
$32.99 - $32.99
$32.99
In stock

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

View full details
$39.00
$39.00 - $39.00
$39.00
$32.99
$32.99 - $32.99
$32.99
Save $6.01 Save $0.00
Save $22.01 Save $0.00

GROCO Bronze Hose Barb Thru-Hull Fitting - 2" [HTH-2000]

GROCO
$91.00
$91.00 - $91.00
$91.00
$68.99
$68.99 - $68.99
$68.99
In stock

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

View full details
$91.00
$91.00 - $91.00
$91.00
$68.99
$68.99 - $68.99
$68.99
Save $22.01 Save $0.00
Save $72.01 Save $0.00

GROCO 2-1/2" Bronze Combo Scoop Thru-Hull w/Nut [STH-2500-W]

GROCO
$236.00
$236.00 - $236.00
$236.00
$163.99
$163.99 - $163.99
$163.99
Low stock

2-1/2" 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
$236.00
$236.00 - $236.00
$236.00
$163.99
$163.99 - $163.99
$163.99
Save $72.01 Save $0.00
Save $26.01 Save $0.00

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

GROCO
$104.00
$104.00 - $104.00
$104.00
$77.99
$77.99 - $77.99
$77.99
Low 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
$104.00
$104.00 - $104.00
$104.00
$77.99
$77.99 - $77.99
$77.99
Save $26.01 Save $0.00

Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]

Attwood Marine
$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99
In stock

Plastic Thru-Hull Fitting - 1-1/2" - WhiteThese thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis.Caution...

View full details
$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99
Save $5.77 Save $0.00

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

Perko
$16.76
$16.76 - $16.76
$16.76
$10.99
$10.99 - $10.99
$10.99
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
$16.76
$16.76 - $16.76
$16.76
$10.99
$10.99 - $10.99
$10.99
Save $5.77 Save $0.00
Save $36.40 Save $0.00

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

Perko
$66.39
$66.39 - $66.39
$66.39
$29.99
$29.99 - $29.99
$29.99
In stock

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

View full details
$66.39
$66.39 - $66.39
$66.39
$29.99
$29.99 - $29.99
$29.99
Save $36.40 Save $0.00
Save $55.89 Save $0.00

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

Perko
$122.88
$122.88 - $122.88
$122.88
$66.99
$66.99 - $66.99
$66.99
In stock

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
$66.99
$66.99 - $66.99
$66.99
Save $55.89 Save $0.00
Save $23.57 Save $0.00

Perko 6-1/4" x 4-1/4" Scoop Strainer Bronze MADE IN THE USA [0066DP3PLB]

Perko
$82.56
$82.56 - $82.56
$82.56
$58.99
$58.99 - $58.99
$58.99
Low stock

Perko 6-1/4" X 4-1/4" Scoop Strainer BronzeCast bronzeMachine slotsTechnical Information: For Thru-Hull Size Inches: 1-1/4 & 1-1/2 Dimensions...

View full details
$82.56
$82.56 - $82.56
$82.56
$58.99
$58.99 - $58.99
$58.99
Save $23.57 Save $0.00
Save $55.33 Save $0.00

Perko 1" Thru-Hull Fitting f/ Hose Chrome Plated Bronze MADE IN THE USA [0350006DPC]

Perko
$113.32
$113.32 - $113.32
$113.32
$57.99
$57.99 - $57.99
$57.99
Low stock

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

View full details
$113.32
$113.32 - $113.32
$113.32
$57.99
$57.99 - $57.99
$57.99
Save $55.33 Save $0.00
Save $72.89 Save $0.00

Perko 1-1/4" Thru-Hull Fitting f/Hose Bronze MADE IN THE USA [0350007DPP]

Perko
$133.88
$133.88 - $133.88
$133.88
$60.99
$60.99 - $60.99
$60.99
In stock

Perko 1-1/4" 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
$133.88
$133.88 - $133.88
$133.88
$60.99
$60.99 - $60.99
$60.99
Save $72.89 Save $0.00
Save $78.40 Save $0.00

Perko 1-1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA [0322DP8PLB]

Perko
$160.39
$160.39 - $160.39
$160.39
$81.99
$81.99 - $81.99
$81.99
In stock

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

View full details
$160.39
$160.39 - $160.39
$160.39
$81.99
$81.99 - $81.99
$81.99
Save $78.40 Save $0.00
Save $55.33 Save $0.00

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

Perko
$113.32
$113.32 - $113.32
$113.32
$57.99
$57.99 - $57.99
$57.99
In stock

Perko 1-1/8" 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
$113.32
$113.32 - $113.32
$113.32
$57.99
$57.99 - $57.99
$57.99
Save $55.33 Save $0.00
Save $34.66 Save $0.00

Perko 1/2" Intake Strainer Bronze MADE IN THE USA [0065DP4PLB]

Perko
$84.65
$84.65 - $84.65
$84.65
$49.99
$49.99 - $49.99
$49.99
Low stock

Perko 1/2" Intake Strainer BronzeCast bronzeMachined SlotsTechnical Information: Maximum Pipe Size Inches: 1/2 Maximum Hull Thickness Inches: 2-1...

View full details
$84.65
$84.65 - $84.65
$84.65
$49.99
$49.99 - $49.99
$49.99
Save $34.66 Save $0.00
Save $99.76 Save $0.00

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

Perko
$181.75
$181.75 - $181.75
$181.75
$81.99
$81.99 - $81.99
$81.99
Low 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
$181.75
$181.75 - $181.75
$181.75
$81.99
$81.99 - $81.99
$81.99
Save $99.76 Save $0.00
Save $104.94 Save $0.00

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

Perko
$189.93
$189.93 - $189.93
$189.93
$84.99
$84.99 - $84.99
$84.99
In stock

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
$84.99
$84.99 - $84.99
$84.99
Save $104.94 Save $0.00