# 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part

🔧 Product Description

  

Dunbier Marine Products TrailSafe Trailer Coupling Lock with Padlock - Part Number: 1522

  

A galvanised TrailSafe coupling lock supplied with a heavy-duty padlock. The lock fits around compatible trailer coupling components to deter unauthorised connection and removal of the trailer while parked or stored.

  

⚙️ Key Features

  

• Purpose-built trailer coupling security device

• Heavy-duty steel construction

• Galvanised corrosion-resistant finish

• Supplied with padlock and keys

• Display-packaged for storage and retail presentation

  

📏 Specifications

  

• Mackay reference: H3998

• Lock type: Coupling security lock

• Padlock: Included

• Compatibility must be checked against coupling shape and trigger clearance

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 1522

• Mackay: H3998

• Comparable category: Ark, AL-KO and Trojan coupling locks with matching coupling geometry

  

🚤 Trailer Compatibility & Application

  

• Suitable for compatible fixed and selected override trailer couplings

• Can be used as a visible theft deterrent when the trailer is uncoupled

• Physical fit must be confirmed before relying on the device

  

🔌 Function

  

Restricts access to the coupling and prevents a tow ball from being readily inserted into the locked coupling.

  

Common signs of wear or replacement:

  

• Padlock shackle is corroded or difficult to turn

• Lock body is bent or no longer seats correctly

• Keys are damaged or missing

• Retaining holes are elongated

• Lock can be removed without unlocking

  

🛠️ Installation & Safety

  

• Fit only when the trailer is safely parked

• Confirm the coupling cannot close over a tow ball with the lock installed

• Keep the keyway lubricated with a suitable lock lubricant

• Do not tow with the lock fitted unless specifically designed for that purpose

• Use with additional security measures for high-risk storage

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied as one TrailSafe coupling lock with padlock and keys

• Supplied in original or equivalent packaging

## Details

- **Price:** 48.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 48.00 AUD | In stock |

## Images

- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part
- 1522 Dunbier H3998 Mackay TrailSafe Coupling Lock, Complete with Padlock | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/1522-dunbier-trailsafe-coupling-lock-complete-with-padlock-mackay-h3998)
> Updated: 2026-08-05