DOMETIC SEASTAR 45 Degree Helm Fitting Kit, 2-Pack – HF5540

Description

DOMETIC SEASTAR 45 Degree Helm Fitting Kit, 2-Pack – HF5540

The Dometic SeaStar HF5540 is a 45 degree stainless steel helm fitting kit for older compatible SeaStar hydraulic steering systems. Supplier listings state it is for 1/4 inch NPT to 3/8 inch tube connections and is not for use with cylinders or helms ending in -3 or -4.

This fitting should be selected by the required fitting style, tube size, and pipe/port size, not by appearance alone. For steering system safety, verify compatibility with the helm, cylinder, and hydraulic line type before installation.

Main Features

• Designed for SeaStar manual hydraulic steering systems using compatible tube and pipe sizes.
• Useful for repairs, service, or custom hydraulic line routing where the listed fitting type is required.
• Marine hydraulic fitting intended to maintain secure, leak-resistant steering connections.
• Always match pipe size, tube size, and cylinder/helm generation before installation.
• Do not substitute NPT fittings into ORB-style -3/-4 helms or cylinders unless the service manual specifically allows it.

What’s in the Box

• Two 45 degree stainless steel helm fittings.

Specifications

• Manufacturer Part Number: HF5540
• Product Type: 45 Degree Helm Fitting Kit, 2-Pack
• Fitting Type: 45 degree helm fitting
• Pipe Size: 1/4 in. NPT
• Tube Size: 3/8 in.
• Material: Stainless steel
• Package Quantity: 2 per kit
• UPC: 731957881632