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4Boats

1-1/2" BSP Plastic Through Hull Skin Fitting 38mm Hose Tail Marine Boat Bilge

1-1/2" BSP Plastic Through Hull Skin Fitting 38mm Hose Tail Marine Boat Bilge

£5.05 GBP
£5.05 GBP
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1-1/2" BSP Plastic Through Hull Fitting

Premium Marine-Grade Plumbing Component

This high-quality 1-1/2" BSP plastic through-hull skin fitting is engineered specifically for marine environments. Designed to provide a secure and watertight connection for onboard plumbing systems, it is an essential component for bilge pump discharge, livewell overflows, and waste-water management.

RELIABILITY: Manufactured from UV-stabilised, high-impact polypropylene to resist corrosion, salt water, and chemical degradation.

Key Features

  • ✔ UV Stabilised: Resistant to sunlight and marine conditions
  • ✔ Full Kit: Includes heavy-duty locking nut
  • ✔ Standard Thread: 1-1/2" BSP for universal compatibility
  • ✔ Easy Install: Flanged head for a clean, professional finish

Technical Specs

Thread Size 1-1/2" BSP
Hose Tail Size 38mm (1.5 inch)
Material High-Impact Plastic
Overall Length approx. 98mm
Cut-Out Diameter approx. 47-48mm

Compatibility / Fitment Guide

Application System Compatibility Notes
Bilge Systems High-flow bilge pumps Suits 1.5" (38mm) ID hose
Drainage Sink & Shower Waste Standard above-waterline use
Livewell Overflow/Drainage Corrosion-proof construction

OEM Cross Reference

Manufacturer Part Number / Reference
Whale SF5425 (Alternative)
T-H Marine TH-1502
TruDesign 90429 (Nylon equiv.)

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part from 4Boats, manufactured to meet or exceed original equipment (OE) standards for marine plumbing.

How do I know if it is compatible?

Check that your hose has an internal diameter (ID) of 38mm (1.5"). This fitting uses a standard 1-1/2" BSP thread, which is the most common size for larger boat drainage and bilge systems.

Can this be used below the waterline?

Standard plastic fittings are recommended for above-waterline applications such as bilge discharge and deck drainage. For below-waterline intake, we recommend DZR brass or glass-reinforced composite fittings.

Note: Please verify your original part dimensions against the specifications provided above before purchasing.

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